Materials Chemistry and Physics最新文献

{"title":"Green plasma engineering of cellulose surfaces for superhydrophobicity and tunable adhesion","authors":"Amanda de S.M. de Freitas ,&nbsp;Rafael P. Ribeiro ,&nbsp;Jéssica S. Rodrigues ,&nbsp;Janine S.G. de Camargo ,&nbsp;Elidiane C. Rangel ,&nbsp;Adriana O. Delgado-Silva","doi":"10.1016/j.matchemphys.2026.132134","DOIUrl":"10.1016/j.matchemphys.2026.132134","url":null,"abstract":"<div><div>This study investigates the modification of cellulose wettability through sequential plasma etching and film deposition to achieve superhydrophobic surfaces with tunable adhesion. The plasma treatment is a clean, solvent-free method that eliminates the need for hazardous chemicals, aligning with sustainable material development. Kraft cellulose samples were etched with oxygen plasma to generate nanoscale surface features and subsequently coated with hexamethyldisiloxane (HMDSO) films via plasma-enhanced chemical vapor deposition (PECVD). The effects of etching time and film thickness on surface properties were evaluated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), infrared reflection absorption spectroscopy (IRRAS), profilometry, and contact angle measurements. Oxygen plasma etching significantly altered the cellulose microstructure by increasing roughness and producing nanostructures. HMDSO deposition further modified surface chemistry, yielding water contact angles of ∼150° and diiodomethane contact angles of ∼120°. Among the tested conditions, the 144 nm HMDSO film showed optimal performance, preserving the nano-textured morphology and maintaining a stable superhydrophobic state over the aging period evaluated (45 days), with a contact angle hysteresis of ∼9° and a sliding (roll-off) angle of ∼7°. The combination of etching times (0–60 min) and HMDSO film thicknesses (144–910 nm) generated a broad range of adhesion levels — from pinned droplets that did not roll off even at 90° tilt to very low-adhesion surfaces — demonstrating highly tunable interfacial behavior. Overall, the integration of oxygen plasma etching and HMDSO film deposition provided an effective and environmentally friendly strategy for engineering cellulose surfaces. These modified surfaces have potential applications in self-cleaning materials, antifouling coatings, and lab-on-paper devices, highlighting the promise of plasma-based technologies for advancing functional cellulose-based materials with adaptable adhesion properties.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132134"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170804","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":"Dopant-induced structural modulation and enhanced photosensing response in Mn-doped ZnO nanoparticles prepared by co-precipitation","authors":"M. Anujency ,&nbsp;M. Mohamed Ibrahim ,&nbsp;S. Vinoth ,&nbsp;A. Anto Jeffery ,&nbsp;Krishnakumar Balu ,&nbsp;Mohanraj Kumar ,&nbsp;H. Algarni ,&nbsp;Mohd Shkir","doi":"10.1016/j.matchemphys.2026.132113","DOIUrl":"10.1016/j.matchemphys.2026.132113","url":null,"abstract":"<div><div>In the present work, a detailed study was conducted to assess the photosensing performance of pure and Mn-doped ZnO nanoparticles synthesized via the co-precipitation method, with Mn concentrations ranging from 0 to 5 wt%. X-ray diffraction (XRD) confirmed that all samples crystallize in the hexagonal wurtzite structure with the <em>P</em>6₃<em>mc</em> space group. Field Emission Scanning Electron Microscopy (FESEM) revealed quasi-spherical particle morphology, while Energy Dispersive X-ray Spectroscopy (EDX) verified the successful incorporation of Mn ions into the ZnO lattice. UV–Vis absorption analysis indicated slight bandgap modulation upon doping, with values of 3.30 eV (pure), 3.27 eV (1 %), 3.28 eV (3 %), and 3.26 eV (5 %). Photoluminescence (PL) spectra showed that the 3 % Mn-doped sample exhibited the strongest emission intensity, implying enhanced charge carrier separation and radiative recombination efficiency. Correspondingly, this composition also achieved the highest responsivity (R), detectivity (D∗), and external quantum efficiency (EQE), marking it as the most efficient photosensing material among the studied samples. Overall, the results demonstrate that Mn doping significantly enhances the optoelectronic properties of ZnO, with 3 % Mn-doped ZnO emerging as a highly promising candidate for UV photodetector applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132113"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170808","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":"Cu-doping improves the cyclic stability of P2-type Na0.67Ni0.33Mn0.67O2","authors":"Mingxuan Zong ,&nbsp;Jiayu Song ,&nbsp;Wei Zhang ,&nbsp;Yanjiang Zhang ,&nbsp;Yueyang Liu ,&nbsp;Li Zhao ,&nbsp;Changsong Dai","doi":"10.1016/j.matchemphys.2026.132133","DOIUrl":"10.1016/j.matchemphys.2026.132133","url":null,"abstract":"<div><div>P2-type Na_0.67Ni_0.33Mn_0.67O₂ garners significant interest in the research community owing to its impressive electrochemical performance, including a high operating voltage of 3.8 V and a substantial cyclic specific capacity of 173 mAh g⁻¹. Despite its promising electrochemical properties, the operational viability of P2–Na_0.67Ni_0.33Mn_0.67O₂ cathodes is significantly constrained by voltage-activated crystalline reconfiguration between P2 and O2 polymorphs. To address this issue, this study prepares a series of Cu-doped cathode materials, Na_0.67Ni_0.33Mn_0.67-xCu_xO₂ (x = 0, 0.02, 0.04, 0.06, 0.08, 0.10), using a co-precipitation method. X-Ray Diffraction shows that Cu-doping enlarges the unit cell, shortens TM-O but lengthens Na–O bonds. Other material phase characterization indicate that Cu is evenly doped in the material structure. The Na_0.67Ni_0.33Mn_0.61Cu_0.06O₂ material exhibits higher cyclic stability (while the undoped sample retains only 14.15 % capacity after 200 cycles at 100 mA g⁻¹, the modified material maintains 73.51 % of its initial capacity under identical conditions). Electrochemical characterization through charge-discharge cycling and Cyclic Voltammetry tests reveals that Cu doping stabilizes the structure by hindering the P2→O2 phase change. Meanwhile, Electrochemical Impedance Spectroscopy tests indicate that Cu doping effectively improves the charge exchange kinetics of the material. In-situ XRD demonstrates that Cu substitution kinetically suppresses the voltage-induced polymorphic transformation during electrochemical cycling.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132133"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170867","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":"Li2MnO3 coupled with BaTiO3 nanocomposite heterojunction for efficient S-scheme photocatalytic mineralization of the antibiotic ciprofloxacin in water","authors":"Almuhrah A.N. Alroba ,&nbsp;Mostafa E. Salem ,&nbsp;Ahmed Shawky ,&nbsp;Soliman I. El-Hout","doi":"10.1016/j.matchemphys.2026.132084","DOIUrl":"10.1016/j.matchemphys.2026.132084","url":null,"abstract":"<div><div>Excessive antibiotic use in water bodies is a risk that accelerates the process of antimicrobial resistance. While heterojunction systems provide a green way to remove organic pollutants via photocatalytic redox reactions, it is still a big challenge to fabricate a highly efficient visible-light-driven photocatalyst. This study suggested the synthesis of BaTiO₃ nanocrystals modified with a 5–20 wt% Li₂MnO₃ for the photocatalytic degradation of ciprofloxacin (CIP). The incorporation of Li₂MnO₃ decreased the surface area but had a significant effect on bandgap narrowing to ∼2.46 eV, which promoted the absorption of visible light and inhibited charge recombination. The 15.0 wt% Li₂MnO₃–BaTiO₃ composite achieved full CIP photooxidation in 50 min (rate constant: 0.045 min⁻¹) and retained 94 % of its original activity after five reuse runs. The performance improvement is due to better light absorption and a highly efficient separation of photogenerated charges, enabled by the S-scheme mechanism. This work advances the application of effective titanate-based heterostructures for sustainable wastewater treatment.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132084"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025542","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":"Optimized influence of electrolyte on the electrochemical behaviour of LFP/MWCNT electrodes: Interface Engineering","authors":"Diganta Kuar,&nbsp;Arjun K S,&nbsp;Sushama M. Giripunje","doi":"10.1016/j.matchemphys.2026.132077","DOIUrl":"10.1016/j.matchemphys.2026.132077","url":null,"abstract":"<div><div>Supercapacitors have gained a wide attention due to their low cost, environmental friendliness, and safe energy storage applications. Though Li-based materials are mostly utilized in battery applications, these materials can also be used in supercapacitors. A hybrid supercapacitor based on hydrothermally synthesized lithium iron phosphate (LFP) can demonstrate the benefits of a supercapacitor while retaining some characteristics of a battery. LFP and multi-walled carbon nanotube (MWCNT) composite was formed with different weight ratio compositions through the hydrothermal route, and the electrodes were tested in three aqueous electrolytes: 3 M KOH, 3 M NaOH, and 3 M LiOH. For LFP:MWCNT in 1:0.3(w/w) optimized ratio, the specific capacitance of 1080.94 F g⁻¹ was observed in 3 M KOH electrolyte. The galvanometric charge-discharge (GCD) profile showed the notable energy density and power density of 36.53 Wh kg⁻¹ and 521.92 W kg⁻¹, respectively, at 2 A g⁻¹ current density. The study also shows capacitance retention of 68.64 % after 2000 cycles. MWCNT anode was employed alongside LFP/MWCNT cathode in 3 M KOH aqueous electrolyte for the formation of a hybrid supercapacitor (HS). The prepared HS showed a specific capacitance of 32.70 F g⁻¹. From the GCD profile of the HS, energy density and power density were found to be 7.88 Wh kg⁻¹ and 379.20 W kg⁻¹ at 0.4 A g⁻¹ constant current density. The further study of the HS showed a 70.96 % capacitance retention after 2000 cycles. Thus, this composition of electrodes shows a promising application of the hybrid supercapacitor, having the potential to be incorporated in hybrid electric technology.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132077"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025528","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":"Synthesized biocarbon-based sepia ink and its application as a counter electrode for dye-sensitized solar cell","authors":"Sahrul Saehana ,&nbsp;Darsikin Darsikin ,&nbsp;Nefta Cahyatri Kharimah ,&nbsp;Euis Siti Nurazizah ,&nbsp;Quang-Duy Dao ,&nbsp;Yuliar Firdaus ,&nbsp;Annisa Aprilia","doi":"10.1016/j.matchemphys.2026.132125","DOIUrl":"10.1016/j.matchemphys.2026.132125","url":null,"abstract":"<div><div>This study highlights the novel use of marine-derived biomass (specifically sepia ink) as a functional carbon precursor for the counter electrode (CE) of dye-sensitized solar cells (DSSCs). Unlike other carbon sources, sepia ink naturally produces primary particles that are spherical and rich in mineral elements. Upon KOH activation, the resulting activated biocarbon (aSBC) exhibits a dramatic increase in specific surface area, reaching 1953.3 m² g⁻¹. However, we found that the predominance of micropores and the presence of crystalline KCl domains, derived from the inherent elements in the precursor, create significant barriers to ion transport, hindering ion diffusion. To overcome these limitations, a composite CE was prepared by mixing activated biocarbon (SBC) and aSBC in a 1:1 ratio. This combination balances the high density of accessible catalytic sites of aSBC with the superior electron and ion pathways provided by the SBC network. The resulting DSSCs achieved a power conversion efficiency of 2.42 %, a fivefold improvement compared to single-component electrodes and comparable to noble metal Pt/FTO counter electrodes. These findings demonstrate that sepia ink-derived biocarbon is a promising and sustainable material, provided its unique pore architecture and mineral content are co-engineered to balance catalytic activity with mass transport.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132125"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025696","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":"Investigation of the oxidation of 440 steel coated with Kaolin/CeO2 and Kaolin/SiO2 operating at high temperature cycling conditions","authors":"Rihab Masmoudi ,&nbsp;Carl P Tripp ,&nbsp;Luke Doucette ,&nbsp;Mauricio Pereira da Cunha","doi":"10.1016/j.matchemphys.2026.132100","DOIUrl":"10.1016/j.matchemphys.2026.132100","url":null,"abstract":"<div><div>A coating consisting of layer-by-layer deposition of cationic and anionic kaolin followed by a topcoat of a sol-gel CeO₂ or SiO₂ is shown to provide a protective barrier against oxidation for 440 steel under thermal cyclic conditions from room temperature to 1000 °C. The kaolin layer provides a torturous path for oxygen penetration while the sol-gel based coatings CeO₂ and SiO₂ are conformal and fill the gaps between kaolin platelets while also improving adhesion of the kaolin coating to steel. After one thermal cycle to 1000 °C, CeO₂ and SiO₂ topcoats over kaolin resulted in lowering the amount of oxidation by 66 % and 98 %, respectively. On the other hand, a second thermal cycle to 1000 °C showed a 55 % lower oxidation in the CeO₂/kaolin coating compared to bare 440 steel, whereas SiO₂/kaolin was delaminated after the second thermal cycle. This was due to mismatch in coefficient of thermal expansion between SiO₂ (0.55x10⁻⁶ K^-1) and 440 steel (10.6x10⁻⁶ K^-1). In contrast, the similar coefficient of thermal expansion between CeO₂ (11.8x10⁻⁶ K^-1) and steel (10.2x10⁻⁶ K^-1) allowed it to sustain thermal cycling. After a 2nd thermal cycle at 1000 °C, XRD analysis of the kaolin/CeO₂ coated sample showed that passivating Cr₂O₃ and Mn_1.5Cr_1.5O₄ oxides were predominant, whereas in bare 440 steel and kaolin/SiO₂ only Fe₂O₃ was detected.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132100"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026021","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 non-enzymatic electrochemical sensor for 2,6-Diaminopurine based on nickel phthalocyanine-modified carbon paste electrode","authors":"Vaishnavi Vishwanath ,&nbsp;Ronald J. Mascarenhas ,&nbsp;Shweta J. Malode ,&nbsp;Jamelah S. Al-Otaibi ,&nbsp;Abdullah N. Alodhayb ,&nbsp;Nagaraj P. Shetti","doi":"10.1016/j.matchemphys.2026.132090","DOIUrl":"10.1016/j.matchemphys.2026.132090","url":null,"abstract":"<div><div>In this study, a novel non-enzymatic electrochemical sensor for 2,6-Diaminopurine (DAP) was developed using a nickel phthalocyanine-modified carbon paste electrode (NiP/CPE). The electrochemical behaviour of DAP was investigated, revealing an irreversible oxidation mechanism involving a two-proton and two-electron transfer process. Optimization of the sensor showed that the addition of the anionic surfactant sodium dodecyl sulfate (SDS) significantly enhanced the peak current response. Under optimal conditions of pH 6.0, the sensor exhibited an extensive linear detection range from 5.0 × 10⁻⁸ M to 1.0 × 10⁻³ M, with a low detection limit (LOD) of 1.6 nM and a quantification limit (LOQ) of 5.5 nM. The fabricated sensor was highly reproducible, preserving 97 % of the original signal, and selectivity in the presence of typical metal-ion interferents. The usefulness of the NiP/SDS-CPE was confirmed through the practical analysis of DAP in spiked human urine and water samples, yielding an acceptable recovery rates. These findings indicate that the developed sensor is a valuable device for routine monitoring of DAP in clinical and environmental samples.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132090"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025570","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":"Adsorption behavior of temozolomide anticancer drug on the aluminum nitride nanostructures: AIM, UV–Vis, NCI, ELF and Marcus theory studies","authors":"Anjan Kumar ,&nbsp;Magda Abdel lattif H. ,&nbsp;Shaker Al-Hasnaawei ,&nbsp;Amani H. Alfaifi ,&nbsp;Subbulakshmi Ganesan ,&nbsp;Ali Fawzi Al-Hussainy ,&nbsp;Aman Shankhyan ,&nbsp;Aashna Sinha ,&nbsp;Subhashree Ray","doi":"10.1016/j.matchemphys.2026.132074","DOIUrl":"10.1016/j.matchemphys.2026.132074","url":null,"abstract":"<div><div>This paper investigates the adsorption mechanism of the temozolomide (TMZ) drug onto AlN nanostructures through density functional theory (DFT) by measuring adsorption energy, HOMO-LUMO energy gap, charge transfer, and AlN- TMZ interaction type. The interaction of TMZ molecules with AlN nanostructures was studied using the atoms-in-molecules (AIM) technique, characterizing the electrostatic parameters of the AlN- TMZ interaction.The electrical conductivity of AlN nanostructures increased upon their interaction with TMZ molecules, implying that AlN nanostructures may serve as promising chemical nanosensors as they can generate electronic signals. we calculated non-covalent interactions (NCI), evaluated reduced density gradient (RDG) properties.The sensitivity of the AlN nanostructures was found to be in the order of AlN nanosheet/AlN nanotube &gt; AlN nanocluster. TMZ molecules can be concluded to remarkably alter the electron transfer behavior of AlN nanosheets. AlN nanosheets are promising and show enhanced electron mobility and transfer performance in applications where conductivity and electron transfer are essential.Overall, AlN nanosheets can be more effectively employed to detect TMZ molecules relative to AlN nanotubes and nanoclusters.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132074"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025574","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":"Synergistic control of thermal expansion and oxidation resistance in novel invar-type alloys","authors":"Shi-Yu Peng,&nbsp;Tzu-Hou Hsu,&nbsp;Hung Yen,&nbsp;Wei-Lin Hsu,&nbsp;An-Chou Yeh","doi":"10.1016/j.matchemphys.2026.132081","DOIUrl":"10.1016/j.matchemphys.2026.132081","url":null,"abstract":"<div><div>Low thermal expansion alloys are critical for applications requiring high dimensional and thermal stability, particularly in industrial equipment and precision instruments. To broaden their usability in high-temperature environments, such alloys must also exhibit a high Curie temperature and strong oxidation resistance. In this study, the Invar effect was utilized for alloy design, supported by thermodynamic predictions performed with Thermo-Calc software. Seven novel alloys were developed, incorporating intermetallic compounds with intrinsically low coefficients of thermal expansion (CTE). The effects of Al and Mn content on the thermal and oxidation behavior of alloys P1 to P6 were systematically investigated. A seventh alloy, P7, was designed to outperform commercial counterparts by incorporating Ti to promote TiB₂ precipitation and Si to enhance Al activity. Among all tested compositions, alloy P7 exhibited the lowest CTE and the best oxidation resistance, outperforming the commercial alloy HRA929. These findings demonstrate that P7 is a promising candidate for high-temperature structural applications requiring both low thermal expansion and excellent oxidation resistance.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"353 ","pages":"Article 132081"},"PeriodicalIF":4.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025545","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}