Materials Chemistry and Physics最新文献

{"title":"Role of inter-layer dwell time on residual stress generation of a thin wall structure by directed energy deposition of ferritic steel","authors":"Amritesh Kumar ,&nbsp;Swarup Bag ,&nbsp;V.C. Srivastava","doi":"10.1016/j.matchemphys.2025.130807","DOIUrl":"10.1016/j.matchemphys.2025.130807","url":null,"abstract":"<div><div>The quality of thin-wall printed components by directed energy deposition (DED) technique rely on physical basis of interface characteristics where inter-layer dwell time <span><math><mrow><mo>(</mo><msub><mi>D</mi><mtext>TM</mtext></msub><mo>)</mo></mrow></math></span> plays a significant role. The numerical computation of transient thermal and residual stress profiles is time-consuming. Moreover, in-situ monitoring and optimization of the deposition attributes following the process simulation is difficult-to-use directly. The use of data-driven deep learning (DL) model to understand the role of <span><math><mrow><msub><mi>D</mi><mtext>TM</mtext></msub></mrow></math></span> on thermo-mechanical responses enhances the physical basis of DED process of a printed thin-wall by implying the augmented state of process parameters. The optimization route of dwell time is proposed using the DL models to find a way of mitigating the tensile residual stress. A well-tested finite element (FE) model is employed to generate an adequate thermal and highly nonlinear residual stress path at different levels of dwell times within the known experimental conditions. The rigorous validation of physics-informed DL (PIDL) model with experimental data enables the prediction of non-linear thermal and stress profiles quite a faster rate than only a physics-based numerical model. The PIDL model interprets the interpolated and extrapolated datasets as a function of dwell times with reasonable accuracy. Further, inverse prediction of dwell times indicates the versatility of the developed model. Overall, the study shows the development of computationally efficient models for large parameter-based thin-walled structure development by coupling the physical basis of the DED process and DL algorithms.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130807"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probing interfacial coupling in cobalt/metal-free phthalocyanine and cobalt/C60 heterostructures","authors":"Hashim Jabbar","doi":"10.1016/j.matchemphys.2025.130816","DOIUrl":"10.1016/j.matchemphys.2025.130816","url":null,"abstract":"<div><div>Exchange bias is experimentally realized when the magnetization loop is shifted from the zero magnetic field, and used in spin valve sensors to pin their hard reference layer, nullifying the subsequent effect of any variation in the sensor layers. In this regard, fundamental insights into magnetic behavior of sufficiently thin films are important for tuning their properties, and are critical for better understanding of surface phenomena in nanodevices. Here, the hysteresis loop shift phenomenon is investigated for nanoscale ferromagnetic-molecular layers using a superconducting quantum interference device (SQUID) over a wide temperature range (2–300 <span><math><mrow><mi>K</mi></mrow></math></span>). Two heterostructure systems consisting of cobalt (<span><math><mrow><mi>C</mi><mi>o</mi></mrow></math></span>) nanolayers in contact with metal-free phthalocyanine (<span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>P</mi><mi>c</mi></mrow></math></span>) planar and fullerene (<span><math><mrow><mi>C</mi><mn>60</mn></mrow></math></span>) spherical molecules are fabricated using organic molecular beam epitaxy and thermal evaporation methods, demonstrating the effect of surface phenomena on magnetic characteristics. For two stacks of <span><math><mrow><mi>C</mi><mi>o</mi></mrow></math></span>/ <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>P</mi><mi>c</mi></mrow></math></span> and <span><math><mrow><mi>C</mi><mi>o</mi></mrow></math></span>/ <span><math><mrow><mi>C</mi><mn>60</mn></mrow></math></span> molecular layers, SQUID measurements indicate the presence of interfacial unidirectional anisotropy (i.e., the anisotropy that is effective only in one direction at the interface between thin films) in the temperature range below <span><math><mrow><mn>20</mn><mspace></mspace><mi>K</mi></mrow></math></span>. The magnitude of the strength of interactions through the shift and coupling energy is computed for both hybrid stacks, and compared with that for <span><math><mrow><mi>C</mi><mi>o</mi></mrow></math></span>-magnetic and nonmagnetic transition metal <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>P</mi><mi>c</mi></mrow></math></span> structures. Therefore, the influence of magnetic hardening of <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>P</mi><mi>c</mi></mrow></math></span> and <span><math><mrow><mi>C</mi><mn>60</mn></mrow></math></span> molecular layers is confirmed for the bias field. By contrast, antiparallel spin alignment inside the molecular layer results from magnetic ions in the organic layer detached from the contact area, being responsible for large value of exchange bias. Accordingly, such heterostructured layers may act as pinning sites, paving the way for designing cost effective molecular spintronics and spin logic devices with faster data processing, ecofriendly, and high flexibility.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130816"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modification of nanodiamond surface with hyper-branched dendrimer as a novel thermo-responsive nanocarrier for near-infrared light-mediated photothermal treatment of breast cancer cells","authors":"Arameh Jamshidpour ,&nbsp;Marjaneh Samadi Zadeh ,&nbsp;Homayon Ahmad Panahi ,&nbsp;Aras Rafiee","doi":"10.1016/j.matchemphys.2025.130772","DOIUrl":"10.1016/j.matchemphys.2025.130772","url":null,"abstract":"<div><div>In the current study, we reported the preparation of a nanodiamond surface modified with a thermo-responsive polymer and hyper-branched dendrimer as a drug delivery system for controlling the release of paclitaxel. To evaluate the features of the nanoadsorbent, X-ray diffraction and Fourier-transform infrared spectroscopy tests were performed, to discover the chemical bonding and physical interactions, respectively. Field emission scanning electron microscopy and thermogravimetric analyses were performed to investigate the morphology of the nanoparticles and the thermal behavior of the samples, respectively. The maximum sorption capacity of the drug at optimal conditions (pH = 6, temperature of 20 °C, and contact time of 15 min) was 16.01 mg g⁻¹. The pH_pzc value of 4 was also determined for the nanoadsorbent. The adsorption procedure was investigated based on the correlation coefficient values of the non-linear isotherm models (Langmuir (0.9977), Freundlich (0.9648), Temkin (0.9697), and Dubbini-Radushkevich (0.9254)). It is recommended that the sorption procedure fits best with the Langmuir model. The pseudo-2^nd-order kinetic model shows the most appropriate alignment with the sorption kinetics, exhibiting a correlation coefficient of unity. In vitro drug release after 6 h indicated a release rate of 61.55 % at pH = 7.4 (T = 45 °C) and a release rate of 21.90 % at pH = 7.4 (T = 37 °C), which means it has controlled temperature-responsive behavior. The relative release of the drug from the nanocarrier under near-infrared laser irradiation reached up to 100 % over 15 min, achieving on-demand drug release. The release of the drug occurs in a controlled manner through the non-Fickian diffusion mechanism and follows the Korsmeyer-Peppas kinetic model. The ‘n’ value given from the Korsmeyer-Peppas model was 0.6, showing the mechanism of drug diffusion. The maximum viability of MCF-7 cells observed for the nanocarrier in presense of the near-infrared laser irradiation was 55.30 % at the minimal concentration (100 μg mL⁻¹), whereas the viability of breast cancer cells for the nanocarrier approximated 42.52 % at a concentration of 5000 μg mL⁻¹, which shows good biocompatibility and high photo-thermal conversion efficiency. Accordingly, the developed drug-releasing platform is a promising candidate for photo-thermal chemotherapy and drug delivery for breast cancer treatment.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130772"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations of the β-Ti shape memory alloys via neutral element stabilization and their microstructures, phase constituents, and phase transformation","authors":"Wan-Ting Chiu ,&nbsp;Naoki Nohira ,&nbsp;Ryo Saito ,&nbsp;Masaki Tahara ,&nbsp;Hideki Hosoda","doi":"10.1016/j.matchemphys.2025.130817","DOIUrl":"10.1016/j.matchemphys.2025.130817","url":null,"abstract":"<div><div>Due to the global aging population, shape memory alloys (SMAs) have become an important area of focus in the biomedical and biomaterials fields, particularly for their promising applications in medical devices. While Ni–Ti SMAs have been widely used in biomedical applications due to their excellent shape deformation and recovery strains, concerns about their hypersensitivity remain. As a result, this study shifts its focus from Ni–Ti alloys to biocompatible β-Ti SMAs. Specifically, this work investigates Ti-based SMAs modified with neutral elements, examining 3 alloy systems: (i) Ti–Zr–Hf, (ii) Ti–Zr–Sn, and (iii) Ti–Zr–Hf–Sn. Among the alloys tested, the Ti–38Zr–10Hf alloy stood out as the most promising, exhibiting the lowest phase transformation temperature (<em>T</em>_p) of 802 K, making it an ideal candidate for further Sn addition. In terms of phase stabilization, the β-phase could not be stabilized at room temperature (RT) with just the addition of Zr and Hf (set (i) alloys). However, both the Ti–Zr–Sn (set (ii)) and Ti–Zr–Hf–Sn (set (iii)) alloys successfully stabilized the β-phase at RT. Notably, the addition of neutral elements did not significantly affect the lattice constant of the β-phase, suggesting that these alloys have high potential for lattice deformation strain. This indicates their suitability for SMA applications. Additionally, the micro Vickers hardness of the Sn-added alloys showed a clear minimum near the martensite transformation start temperature (<em>M</em>_s), which is a typical phenomenon in SMAs. The lowest hardness was observed when Sn was added in the range of 5–6 mol%. These findings suggest that β-Ti SMAs with neutral element additions may hold promise for future biomedical applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130817"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of FeMnO3@Ag perovskite via sol-gel combustion for superior photocatalytic degradation of methyl orange under visible light irradiation","authors":"Naushad Ahmad ,&nbsp;Mohammad Rizwan Khan ,&nbsp;Kuppu Sakthi Velu ,&nbsp;Sonaimuthu Mohandoss","doi":"10.1016/j.matchemphys.2025.130819","DOIUrl":"10.1016/j.matchemphys.2025.130819","url":null,"abstract":"<div><div>Photocatalysis offers a promising and sustainable approach to dye degradation, delivering environmental advantages such as lower carbon emissions, heat energy savings, and the conservation of natural resources. In this study, FeMnO₃ (FMO) and Ag-doped FeMnO₃ (FMO-A) perovskites were successfully synthesized by sol-gel assisted combustion method and systematically examined for their structural, morphological, and optical characteristics in the context of methyl orange (MO) dye degradation. Structural analysis, utilizing XRD and Rietveld refinement confirmed FMO crystalline nature and the amorphous nature of Ag in FMO-A. Morphological assessment through FESEM and TEM disclosed distinctive microstructural features such as FMO displayed spherical-shaped particles, while FMO-A exhibited larger grains with mixed morphologies. UV–vis spectra determined optical band gaps (E_g) of 2.71 eV for FMO and 2.45 eV for FMO-A, suggesting enhanced potential for photocatalytic degradation, especially in the visible light range. Photocatalytic assessments revealed FMO-A superior decolorization efficiency at 84.2 % vs. 47.8 % for FMO after 120 min of visible light exposure, following first-order kinetics with a higher apparent rate constant than FMO. Dielectric analyses unveiled material electrical behavior, showcasing relaxation at lower frequencies and polarization resonance indicated by dielectric loss and tan δ. Complex modulus analysis disclosed diverse charge transport mechanisms. Nyquist plots highlighted decreased grain resistance in FMO-A, and conductivity variations with frequency demonstrated enhanced conductivity with Ag substitution. In summary, FMO-A exhibits promise as a visible light photocatalyst for efficient organic pollutant degradation, owing to its enhanced electrical conductivity and charge carrier transportation mechanisms.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130819"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced electrochemical and thermal performance of nitrogen-doped expanded graphite/hexagonal boron nitride porous electrodes for supercapacitor","authors":"F. Erdemir,&nbsp;H.A. Reis,&nbsp;F.E. Baskara","doi":"10.1016/j.matchemphys.2025.130780","DOIUrl":"10.1016/j.matchemphys.2025.130780","url":null,"abstract":"<div><div>This study explores the electrochemical and thermal properties of nitrogen-doped expanded graphite (EG) and hexagonal boron nitride (h-BN) porous paper electrodes, with a focus on their performance in symmetric supercapacitors. Composite electrodes containing 1 wt% and 8 wt% h-BN were fabricated and systematically characterized through electrochemical, thermal, and structural analyses. As the operating temperature increased from 10 °C to 60 °C, the areal capacitance of the 8 wt% h-BN/EG electrode decreased slightly from 187 mF/cm² to 184 mF/cm², whereas the 1 wt% h-BN/EG electrode exhibited a more pronounced reduction from 348 mF/cm² to 277 mF/cm² at a scan rate of 50 mV/s, demonstrating the superior thermal stability of the 8 wt% h-BN/EG electrode. The 8 wt% h-BN/EG electrode further exhibited enhanced thermal stability, maintaining a low charge-transfer resistance of 0.78 Ω at 60 °C and retaining 98.4 % of its initial capacitance over the temperature range of 10 °C–60 °C. Cyclic voltammetry and galvanostatic charge-discharge analyses revealed pseudocapacitive behavior and excellent cycling stability, with the 1 wt% h-BN/EG electrode retaining 92 % of its capacitance after 4000 cycles at 10 °C. Thermal imaging confirmed the improved thermal conductivity of the 8 wt% h-BN/EG electrode, attributed to its higher h-BN content, which minimized dimensional changes under heat exposure.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130780"},"PeriodicalIF":4.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization of electrically conducting electrospun mediator-less polyaniline-based enzymatic biofuel cell anode","authors":"Ifra Khanam,&nbsp;Inamuddin","doi":"10.1016/j.matchemphys.2025.130814","DOIUrl":"10.1016/j.matchemphys.2025.130814","url":null,"abstract":"<div><div>A bioanode of polyaniline (PANI) and polystyrene modified with redox enzyme glucose oxidase was fabricated by using electrospinning. The bioanode was prepared by depositing the electrospun fibers over a glassy carbon electrode (GCE). The bioanode composite was characterized by FTIR (Fourier transform infrared spectroscopy), TGA (Thermogravimetric analysis), XRD (X-ray diffraction), SEM (Scanning electron microscopy), and HR-SEM (High resonance scanning electron microscopy). The electrochemical characteristics of the fibrous anode are studied by cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). The maximum current density provided by the GCE/PANI-polystyrene/GOx nanofibers was 2.689 mA cm⁻² in the presence of 20 mM glucose, indicating the successful glucose-sensing ability of the GOx-modified anode. The mentioned bioanode showed significant operational stability. Fabricating fibrous matrix opens a gateway to explore its possible exploitation in wearable and miniatured EBFCs for future research.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130814"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-sensitive platform for the detection of a psychostimulant drug using a nanostructured titanium carbide/carbon matrix: Insights into electrochemical sensing mechanism","authors":"Jyothi C. Abbar ,&nbsp;Ravichandra Rangappa ,&nbsp;Basappa C. Yallur ,&nbsp;Archana R. Patil ,&nbsp;Nagamadhu M","doi":"10.1016/j.matchemphys.2025.130797","DOIUrl":"10.1016/j.matchemphys.2025.130797","url":null,"abstract":"<div><div>Mefexamide hydrochloride (MAH), a psychostimulant substance, was detected using an electrochemical sensor using a nanostructured titanium carbide/carbon matrix. Techniques like Cyclic voltammetry (CV), square wave voltammetry (SWV), electrochemical impedance spectroscopy (EIS) and surface characterisation was employed to develop insights on the electrocatalytic activity of the sensing surface. The modified sensing electrode demonstrated a selective and sensitive response to MAH in a phosphate buffer solution at pH 7.0, showing significantly enhanced electro-catalytic activity compared to the bare carbon paste electrode. The electron transfer reaction produced a diffusion controlled mechanism with two oxidation and a reduction peak. The linearity for the detection of MAH was studied at SWV under optimum conditions and the range was found to be at 200.0 μM–8.0 μM with the LOD and LOQ values of 3.6 × 10⁻⁷ M and 11.9 × 10⁻⁷ M. The study utilized various excipients to examine their potential interference in the analytical process, and the results demonstrated the simplicity of the method, with its high sensitivity and selectivity, in the detection of MAH in real samples like biofluids and water samples.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130797"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of rare earth cerium (Ce) substitution on structural, magnetic and electrochemical properties of lithium ferrites: A comprehensive study","authors":"Uzma Batool ,&nbsp;Muhammad Iqbal Asif ,&nbsp;Zeenat Jabeen ,&nbsp;Muhammad Asif ,&nbsp;Asadullah Dawood ,&nbsp;Mukhtar Ahmad ,&nbsp;Rizwan Ul Hassan ,&nbsp;Atiq ur Rehman ,&nbsp;Ghulam Abbas Ashraf ,&nbsp;Hisham S.M. Abd-Rabboh ,&nbsp;Doniyor Jumanazarov ,&nbsp;Farruh Atamurotov ,&nbsp;Phongpichit Channuie","doi":"10.1016/j.matchemphys.2025.130792","DOIUrl":"10.1016/j.matchemphys.2025.130792","url":null,"abstract":"<div><div>Sol-gel technique using metal nitrates and citric acid has been employed to synthesize lithium ferrites by the substitution of cerium which is formulated as (Li₀.₅Ce_xFe₂._5-xO₄) (x = 0, 0.05, and 0.10). The purpose of this research is to understand how Ce substitution modifies the physical characteristics of lithium ferrites. Various experimental techniques including X-ray diffractometers (XRD) for structural determination, Fourier transform infrared (FTIR) spectroscope to examine characteristic bands in materials and scanning electron microscope (SEM) to evaluate the materials morphology, are used to characterize the produced ferrites. Moreover, for the investigations of magnetic properties of samples including saturation magnetization (Ms) and coercivity (Hc) along with retentivity (Mr), vibrating samples magnetometer (VSM) was utilized. X-ray diffraction analysis verified FCC, a single-phase structure, and a rise in lattice constant (or parameter) from 8.37 Å to 8.53 Å with the increase of Ce concentrations. The nanoparticles are seen to be aggregated and to have varying sizes in scanning electron micrographs. A look at the FTIR spectrum reveals that the octahedral B-site absorbs light at a wavelength of 652–663 cm⁻¹. As Cerium is added to pure lithium ferrite, the band shifts towards higher frequency. CV measurements show that the specific capacitance decreases with increasing scan rate, leading to a commensurate increase in the loop area. The CV analysis shows that the investigated material can be used as electrode material for storage devices.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130792"},"PeriodicalIF":4.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of H2O phase state on corrosion behavior of Q125 in high-temperature H2O-CO2-H2S-H2 environment","authors":"Zhengrong Ye ,&nbsp;Xiaoshuang Li ,&nbsp;Shengkai Shi ,&nbsp;Ming Wang ,&nbsp;Jianing Li ,&nbsp;Zhihong Zhao ,&nbsp;Shiao Li ,&nbsp;Yong Wang ,&nbsp;Jianbo Sun ,&nbsp;Weimin Zhao","doi":"10.1016/j.matchemphys.2025.130800","DOIUrl":"10.1016/j.matchemphys.2025.130800","url":null,"abstract":"<div><div>The wellhead of the production well for in-situ shale oil extraction is in an environment where H₂O, CO₂, H₂S and H₂ coexist at 150 °C, with H₂O existing in gaseous and liquid forms. Advanced methods and thermodynamic calculations were used to study the differences and mechanisms of the corrosion behavior on the surface of Q125 steel in different H₂O phase state environments. Results show that the average corrosion rate of Q125 in the gaseous water environment (0.0788 mm/a) is much lower than that in the liquid one (0.3625 mm/a). Part of the reason is that the presence of H₂ can slow down the cathodic reaction and thus reduce the corrosion rate in the gaseous water environment. Localized corrosion occurs in the liquid water environment mainly because it contains a large number of Cl⁻, whereas such a phenomenon is absent in the gaseous water environment. The corrosion products on the surface of the specimens in both environments are composed of sulfides on the outer layer and oxides on the inner layer. The corrosion products in the gaseous water are looser than in the liquid water, mainly because of the inward diffusion of condensed H₂O on the specimen surface in the gaseous water.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130800"},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}