Journal of Materials Science最新文献

{"title":"Evolution of the lattice plane spacings and mismatch of a single-crystalline Co-base superalloy during creep in the rafting regime","authors":"J. Bandorf,&nbsp;M. Göken,&nbsp;S. Neumeier","doi":"10.1007/s10853-025-11300-y","DOIUrl":"10.1007/s10853-025-11300-y","url":null,"abstract":"<div><p>The single-crystalline Co-9Al-7.5W-2Ta (at.%) superalloy shows pronounced directional coarsening of the γ′ phase (N-type rafting) during high-temperature/low-stress creep due to the highly positive γ/γ′ lattice misfit. High-resolution X-ray diffraction (HRXRD) experiments at room temperature show that the qualitative evolution of the recorded diffraction line profiles after creep deformation strongly depends on the crystallographic direction with respect to the direction of the applied creep load. This evolution of the line profiles also reflects the microstructural changes associated with rafting. By using an advanced data deconvolution approach for diffraction peak fitting, it is found that both in [001] parallel and in [010]/[100] perpendicular to the applied stress, respectively, the lattice plane spacings (<i>d</i> spacings) of the horizontal γ channels and the γ′ phase each tend towards a common value with increasing plastic strain. These values are associated with their respective unconstrained values. As a consequence, the γ/γ′ <i>d</i> spacing mismatch observed after plastic deformation is closely related to the mismatch of the unconstrained phases. The matrix tetragonal distortion and stresses strongly decrease. Combining these findings with the ones from earlier TEM studies on that alloy indicates that this is attributed to the relaxation of the overall stress induced by the ongoing formation of interfacial dislocation networks. The findings of this study help to understand the correlation between the evolution of lattice distortions and internal stresses and the microstructural changes and deformation mechanisms during N-type rafting of superalloys.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 39","pages":"18414 - 18441"},"PeriodicalIF":3.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-025-11300-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"K2S-mediated hierarchical pore engineering in lignin-derived sulfur-enriched activated carbons for enhanced elemental mercury capture","authors":"Bingying Li,&nbsp;Mengen Zhong,&nbsp;Songlin Zuo,&nbsp;Debin Wang","doi":"10.1007/s10853-025-11494-1","DOIUrl":"10.1007/s10853-025-11494-1","url":null,"abstract":"<div><p>Sulfur-functionalized porous carbons have garnered significant attention for multifunctional applications ranging from energy storage to environmental remediation. This study introduces an innovative single-step K₂S activation strategy for converting renewable lignin into high-surface-area sulfur-enriched porous carbons with hierarchical porosity. The results showed that the activation parameters of K₂S/lignin mass ratios (0.5:1 to 3:1) and thermal activation temperatures (600–850 °C) critically govern the resultant pore structure, sulfur content (5.0–12.5 wt%), and sulfur speciation distribution. The characterization reveals three dominant sulfur configurations: elemental (S⁰), thiophenic (C–S–C), and sulfonic (C–S=O) moieties, with their relative distribution being thermally modulable. Post-synthesis treatments through methanol extraction and thermal annealing (800 °C/N₂) were found to effectively eliminate pore-blocking S⁰ species while enhancing textural properties, achieving exceptional Brunauer–Emmett–Teller surface areas (2500 m² g⁻¹) and total pore volumes (2.4 cm³ g⁻¹) at optimal conditions. This pore evolution suggests a dual mechanism where elemental sulfur acts as both a porogen and reactive intermediate during K₂S activation. The optimized sulfur-containing porous carbons exhibited superior elemental mercury adsorption capacity (44 mg g⁻¹), outperforming conventional sulfur-impregnated carbons. This work establishes K₂S activation as a sustainable paradigm for fabricating hierarchically sulfur-containing porous carbons, combining renewable feedstocks with tailorable surface chemistry for advanced environmental applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17492 - 17511"},"PeriodicalIF":3.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144254","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":"The microstructure, mechanical properties and oxidation protection of niobium alloys for aerospace applications","authors":"Shuren Zhan,&nbsp;Yingyi Zhang,&nbsp;Jianyue Ji,&nbsp;Haoran He,&nbsp;Jia tian Hu,&nbsp;Tao Fu","doi":"10.1007/s10853-025-11538-6","DOIUrl":"10.1007/s10853-025-11538-6","url":null,"abstract":"<div><p>Niobium alloys have excellent high-temperature, high strength, low density, and excellent processability, and is widely used in key components, such as combustion chambers, engine blades, rocket and missile nozzles. However, these niobium alloys have poor oxidation resistance and are easily affected by \"pest oxidation\" in high-temperature oxidation environments, which greatly limits their application in the aerospace field. This work provides a comprehensive overview of the development and application of niobium alloys, and the microstructure, mechanical properties and oxidation characteristics of three high-temperature niobium alloys (PWC-11, C-103, and Nb521) were discussed. In addition, the microstructure and phase composition evolution, oxidation behavior and failure mechanism behavior of the surface anti-oxidation coatings on high temperature niobium alloys were also investigated. Finally, some suggestions and prospects for improving the mechanical properties and oxidation resistance of high temperature niobium alloys in aerospace applications were proposed.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 41","pages":"19455 - 19483"},"PeriodicalIF":3.9,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316194","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":"Acoustic energy control of sandwich acoustic topologies","authors":"Xiao Liang,&nbsp;Zhen Wang,&nbsp;Jiangxia Luo,&nbsp;Guojian Zhou","doi":"10.1007/s10853-025-11497-y","DOIUrl":"10.1007/s10853-025-11497-y","url":null,"abstract":"<div><p>Acoustic topologies have received attention mainly due to their extreme acoustic transport capabilities. However, previous acoustic topologies were derived from arrays of scatterers. The pseudo-spin positions of phononic crystals tend to exist only at the K or Г points in the Brillouin zone. This paper proposes a periodic sandwich acoustic topology without scatterers. By gouging out the periodic cylindrical structure in the bottom plate, the air sandwich in the center is made to have acoustic topological properties. This sandwich structure allows for a pseudo-spin acoustic flow at both the K and Г points in the Brillouin zone, thus enabling a stronger acoustic transmission. The absence of scatterers means that applications will be possible in more fields. Meanwhile, this research proposes a method to control the intensity of acoustic flow based on this structure. By introducing a specially designed acoustic flow switch, arbitrary control of the acoustic flow intensity on the edge-state path can be realized. The proposed method will help to cope with scenarios where different acoustic flow intensities need to be output. This has a high potential for applications such as separating particles with different masses in microfluidics.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17649 - 17663"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143890","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":"Zn-driven amorphous CoP on MXene-modified Ni foam: phase engineering for efficient hydrogen evolution catalysis","authors":"YaXi Zhang,&nbsp;Jin Liang,&nbsp;Li Zhang,&nbsp;FengYuan Zou,&nbsp;YunFeng Li,&nbsp;ZiQuan Zeng,&nbsp;Tian Lei,&nbsp;Guang Yang","doi":"10.1007/s10853-025-11504-2","DOIUrl":"10.1007/s10853-025-11504-2","url":null,"abstract":"<div><p>As a clean energy carrier, hydrogen necessitates efficient production via cost-effective, highly active non-noble metal electrocatalysts. Herein, we demonstrate a Zn-doped CoP heterostructure catalyst anchored on MXene-engineered nickel foam (MXene@ZnCoP/NF) through synergistic substrate engineering and compositional modulation. This design achieves exceptional alkaline hydrogen evolution reaction (HER) activity and superior overall water splitting efficiency. In 1.0 M KOH electrolyte, the MXene@ZnCoP/NF heterostructure exhibits exceptional HER performance, achieving a low overpotential of 15 mV at 10 mA cm⁻², 64 mV at 50 mA cm⁻², 214 mV at 500 mA cm⁻², and a Tafel slope of 86.0 mV dec⁻¹, indicative of rapid reaction kinetics. Furthermore, the catalyst demonstrates industrial-grade durability, maintaining stable operation for 65 h at 500 mA cm⁻² without significant degradation. When integrated into a full-cell electrolyzer with RuO₂/NF as the anode (RuO₂/NF ||MXene@ZnCoP/NF), the system requires only 1.53 V to deliver a current density of 10 mA cm⁻², surpassing the performance of the noble metal system Pt-C/NF||RuO₂/NF (1.61 V). This highlights its potential as a cost-effective alternative to noble metal-based electrocatalysts for scalable hydrogen production. The enhanced catalytic performance can be primarily attributed to the synergistic interplay of three key factors: the superior conductivity provided by MXene-engineered NF substrates, the Zn doping-induced crystalline-to-amorphous phase reconstruction, and the morphological transformation from micrometer-scale architectures to nanoscale structures. This study proposes an innovative “substrate–structure–composition” synergistic strategy that establishes a new paradigm for designing highly efficient non-noble metal HER electrocatalysts, thereby propelling the scalable industrial implementation of electrocatalytic water splitting for hydrogen production.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17781 - 17795"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144270","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":"Advanced polymeric membranes for environmental remediation: emerging roles of hydrochar and biochar composites","authors":"Mohammad Tahir Aminzai,&nbsp;Erdal Yabalak","doi":"10.1007/s10853-025-11508-y","DOIUrl":"10.1007/s10853-025-11508-y","url":null,"abstract":"<div><p>Polymeric membranes (PMs) have recently emerged as a versatile technology for a wide range of environmental applications, including water purification, wastewater treatment, desalination, air filtration, and gas separation. Both solids and liquid PMs have been employed extensively in environmental remediation. However, the bare PMs frequently have various limitations that restrict their effectiveness in environmental remediation. Therefore, to enhance their selectivity, stability, permeability, antifouling, and mechanical properties, PMs are generally modified with a variety of materials, including nanomaterials, biochar and hydrochars, zeolites, polymeric additives, and zwitterions. Incorporating hydrochar and biochar into PMs provides enhanced hydrophilicity, mechanical strength, thermal stability, adsorption capacities, and eco-friendliness. Hydrochar/biochar-based PMs have been extensively employed for sustainable and effective remediation of various pollutants from water, including heavy metals, pharmaceuticals, dyes, pesticides, and inorganic ions. This review delves deeply into the latest advancements in PMs, modified PMs, and hydrochar/biochar-based PMs for the sustainable removal of various pollutants from the environment. In addition, the article discusses all the challenges and limitations that come with modified or unmodified PMs, explores potential solutions, and offers an in-depth analysis of current research and prospects for the development of modern PMs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 40","pages":"18710 - 18733"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256146","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":"Study on deformation and fracture behavior of TC17 titanium alloy by finite element model based on mapping EBSD data","authors":"Xuan Xiao,&nbsp;Yue Mao,&nbsp;Li Fu","doi":"10.1007/s10853-025-11401-8","DOIUrl":"10.1007/s10853-025-11401-8","url":null,"abstract":"<div><p>TC17 titanium alloy is widely used in the aviation industry due to its high strength, high hardness, excellent fatigue resistance, and corrosion resistance. As a two-phase alloy, the plastic strain accommodation at <i>α</i>/<i>β</i> phase interfaces governs the material’s overall plastic deformability and fracture resistance, thereby becoming the decisive factor in microstructure optimization and service life prediction of aviation titanium alloy structural components. This paper proposes a fracture prediction method based on FEM that integrates experimentally characterized EBSD data with a modified fracture criterion to study the stress–strain evolution, deformation, and fracture behavior of TC17(<i>α</i> + <i>β</i>) and TC17(<i>β</i>) titanium alloys under tensile loading conditions. The model effectively reveals the influence of phase interfaces on mechanical properties and fracture behavior. The research results indicate that the simulated elastic modulus, yield strength, tensile strength, and elongation of TC17(<i>α</i> + <i>β</i>) titanium alloy are 92.34 GPa, 1030 MPa, 1119.7 MPa, and 3.2%, respectively, while those of TC17(<i>β</i>) are 91.58 GPa, 1031.8 MPa, 1175.5 MPa, and 3.15%, respectively. The deviation rates between simulated and experimentally measured (SEM in situ tensile test) mechanical properties are all within 3.5%, with the exception of elongation which exhibits a deviation below 8%. Stress and strain concentrations in TC17(<i>α</i> + <i>β</i>) titanium alloy primarily develop at interfaces between either equiaxed or lamellar <i>α</i> phase and the <i>β</i> matrix, whereas in TC17(<i>β</i>) alloy, they predominantly form at grain boundary <i>α</i> phase/<i>β</i> matrix interfaces (<i>α</i> phase at prior <i>β</i>-grain boundaries) or within <i>β</i> matrix regions adjacent to lamellar <i>α</i> phase termini. Crack initiation consistently occurs at <i>α</i>/<i>β</i> interfaces, specifically at equiaxed <i>α</i> phase interfaces in TC17(<i>α</i> + <i>β</i>) and grain boundary <i>α</i> phase interfaces in TC17(<i>β</i>), with subsequent propagation proceeding either along <i>α</i> phase interfaces or through <i>α</i> phase into the <i>β</i> matrix, where the basketweave structure demonstrates significantly greater crack propagation resistance compared to lamellar structures.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17811 - 17828"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144269","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":"Melt mixing activated Zn-BDC MOF for sustainable packaging: enhancing barrier properties in PLA/PCL nanocomposites","authors":"Meriem Guira,&nbsp;Samia Kerakra,&nbsp;Marc Ponçot,&nbsp;Tayeb Bouarroudj,&nbsp;Abderrahmane Habi","doi":"10.1007/s10853-025-11490-5","DOIUrl":"10.1007/s10853-025-11490-5","url":null,"abstract":"<div><p>Sustainable packaging remains a key challenge in the transition away from petroleum-based materials. This study explores the development of biodegradable films based on a poly(lactic acid) (PLA)/polycaprolactone (PCL) blend, with 30 wt% PCL as the dispersed phase. To enhance moisture barrier performance, a zinc-based metal–organic framework with 1, 4-benzenedicarboxylic acid (Zn-BDC MOF) was synthesized and incorporated into the blend at 1 wt%, 3 wt%, 5 wt%, and 7 wt% loadings via melt mixing using a co-rotating twin-screw micro-compounder, ensuring homogeneous dispersion. The melt mixing process facilitated the activation of Zn-BDC MOF by enhancing its surface exposure and promoting coordination interactions with the polymer chains, as evidenced by FTIR shifts in carbonyl and methylene bands, indicating modified intermolecular interactions. These changes were linked to increased PLA crystallinity and disrupted PCL crystallinity, highlighting Zn-MOF’s dual structural role. Thermal and morphological analyses (2D WAXS, DSC, TGA, SEM), along with dynamic mechanical testing (DMA) and surface assessments (contact angle, AFM), demonstrated enhanced interfacial compatibility between PLA and PCL. Notably, 3 wt% Zn-MOF displayed optimal performance, with a higher storage modulus and improved dispersion, without significant agglomeration. Surface analysis revealed a progressive decrease in contact angle and increased roughness, indicating improved hydrophilicity and heterogeneity. Despite the increased surface polarity, water absorption and vapor permeability were reduced at moderate Zn-MOF loadings, attributed to increased tortuosity and densified morphology, which limited water diffusion pathways. Overall, the incorporation of Zn-MOF into PLA/PCL blends significantly enhances compatibility, and moisture resistance, thereby establishing this nanocomposite system as a promising candidate for sustainable packaging.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17512 - 17530"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144267","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":"Tailoring sulfurization conditions in NiFe-PBA-derived NiSx@FeSx electrocatalysts for enhanced bifunctional water splitting","authors":"Purusottam Reddy B,&nbsp;Shrouq H. Aleithan,&nbsp;Naveen B,&nbsp;Youngsuk Suh,&nbsp;Si-Hyun Park","doi":"10.1007/s10853-025-11390-8","DOIUrl":"10.1007/s10853-025-11390-8","url":null,"abstract":"<div><p>Designing efficient, cost-effective electrocatalysts for electrochemical splitting of water is essential towards developing clean hydrogen energy devices. Here, we report a set of NiS_x@FeS_x nanocomposites from NiFe-based Prussian Blue Analogue (PBA) materials, along with a detailed analysis of how sulfurization temperature in a range of 400–650 °C impacts structure evolution, surface composition, and electrochemical performance. The structure determination of NiS_x@FeS_x nanocomposites confirmed mixed-metal sulfide phases of NiS₂ as well as FeS₂, along with heterogeneous interfaces and favorable Ni³⁺ and Fe³⁺ oxidation states, both of which are significant for catalytic activity. Amongst all, NiS_x@FeS_x nanocomposite sulfurized at 500 °C displayed maximal electrocatalytic performance. Its higher catalytic activity was attributed to a synergistic coupling of heterogeneous, interconnected interfaces along with increased ionic conductivity, allowing for more effective charge transfer as well as enhanced reaction kinetics. The electrochemical data affirmed that NiS_x@FeS_x-500 needed a low overpotential of 276 mV towards oxygen evolution reaction (OER) at 50 mA cm⁻², coupled with a resultant Tafel slope of 91 mV dec⁻¹. Towards hydrogen evolution reaction (HER), it demonstrated a low overpotential of 179 mV at 10 mA cm⁻² as well as a Tafel slope of 81 mV dec⁻¹, reflecting effective reaction kinetics. Additionally, the two-electrode electrolyzer constructed using this material both as anode and cathode needed merely 1.706 V to reach 10 mA cm⁻², while operating stably over a period of 10 h. These observations point towards potential applications of NiFe-PBA-derived NiS_x@FeS_x-500 nano composite as a stable, cost-effective bifunctional electrocatalyst towards overall water splitting technologies.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 38","pages":"17664 - 17678"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144271","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":"Lanthanum effects on microstructure and galvanic corrosion of Fe–20Cr–18Ni–6Mo–0.8Cu–0.2N stainless steel welded joints","authors":"Haojun Li,&nbsp;Quantong Jiang,&nbsp;Xingbin Liu,&nbsp;Dongzhu Lu,&nbsp;Xiaofan Zhai,&nbsp;Jin Wang,&nbsp;Chen Li,&nbsp;Jizhou Duan,&nbsp;Baorong Hou","doi":"10.1007/s10853-025-11514-0","DOIUrl":"10.1007/s10853-025-11514-0","url":null,"abstract":"<div><p>This study investigates lanthanum (La) effects on microstructure and galvanic corrosion of Fe–20Cr–18Ni–6Mo–0.8Cu–0.2N stainless steel and Q235 carbon steel welds. Tungsten inert gas welding was employed to achieve sound joint formation. Coarse grains are formed in the fusion zone, and σ-phases consisting of Cr₃Ni₂ and Fe–Cr–Mo are produced in the heat-affected zone by prolonged heating. In La-contained alloys, between the grain boundary precipitation phase presented and substrate surface existed large potential difference results in galvanic corrosion. However, the alloy contained 0 wt% La had a lower surface potential of 1.927 μV and 0.5 wt%, 1.5 wt%, 2.0 wt% La alloy more than 2.800 μV. This result demonstrated La plays a positive role in raising alloy surface potential to reduce the initially corrosion tendency. From electrochemical results, the alloy containing 0.5 wt% La demonstrated a stable open-circuit potential of − 0.518 V and largest passive film breakdown potential (<i>E</i>_b) of 0.45 V after 12 days corrosion, indicating minimization of galvanic corrosion tendency. Moreover, the 0.5 wt% La alloy (2.40 × 10⁶ cells/ml) was found inhibiting about 78.18% of SRB growth by bacteria count for 0 wt% La (1.10 × 10⁷ cells/ml).</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 40","pages":"19145 - 19168"},"PeriodicalIF":3.9,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256147","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}