npj Materials Degradation最新文献_第4页

Surface treatments on commercial glasses: durable impact on the retention of lead, barium and boron 商用玻璃的表面处理：对铅、钡和硼保留的持久影响

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-26 DOI: 10.1038/s41529-024-00526-x

L. Brunswic, F. Angeli, S. Gin, E. D. van Hullebusch, M. Tarrago, L. Gautron, D. R. Neuville

{"title":"Surface treatments on commercial glasses: durable impact on the retention of lead, barium and boron","authors":"L. Brunswic, F. Angeli, S. Gin, E. D. van Hullebusch, M. Tarrago, L. Gautron, D. R. Neuville","doi":"10.1038/s41529-024-00526-x","DOIUrl":"10.1038/s41529-024-00526-x","url":null,"abstract":"Glass durability is one of the properties that can be affected by surface treatments such as coatings or chemical attacks. These treatments can be used to reduce the quantities of potentially toxic elements contained in glass that may be released in solution. Five surface treatments were selected: three different coatings (SnO2, TiO2, SiO2) and two acidic attacks (SO2 dealkalization and acid polishing). These treatments were performed on five glass compositions (soda-lime, borosilicate, barium silicate, opal, and lead crystal). Their effects on alteration rates and mechanisms were investigated through a single protocol (acetic acid 4%, 70 °C) simulating accelerated aging conditions for containers of beverages or food. The data collected over 1.3 years showed significant reduction of lead leaching with all treatments except acid polishing. The best reduction factor was obtained with SO2 dealkalization, which also demonstrated beneficial effects towards the retention of Ba by reducing the diffusion of alkalis.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-12"},"PeriodicalIF":6.6,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00526-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of carbides and Charpy toughness in a low alloy bainitic steel during step-up aging process 低合金贝氏体钢在阶跃时效过程中的碳化物演变和夏比韧性

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-21 DOI: 10.1038/s41529-024-00527-w

Long Jin, Kun Zhang, Ming-Liang Zhu, Fu-Zhen Xuan

引用次数: 0

Simultaneous accelerated stress testing of membrane electrode assembly components in polymer electrolyte fuel cells 聚合物电解质燃料电池膜电极组件的同步加速应力测试

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-16 DOI: 10.1038/s41529-024-00524-z

Wataru Yoshimune, Akihiko Kato, Tetsuichiro Hayakawa, Satoshi Yamaguchi, Satoru Kato

{"title":"Simultaneous accelerated stress testing of membrane electrode assembly components in polymer electrolyte fuel cells","authors":"Wataru Yoshimune, Akihiko Kato, Tetsuichiro Hayakawa, Satoshi Yamaguchi, Satoru Kato","doi":"10.1038/s41529-024-00524-z","DOIUrl":"10.1038/s41529-024-00524-z","url":null,"abstract":"The durability of polymer electrolyte fuel cells (PEFCs) in fuel cell electric vehicles is important for the shift from passenger cars to heavy-duty vehicles. The components of a PEFC, namely the proton exchange membrane (PEM), catalyst layer (CL), and gas diffusion layer (GDL), contribute to the degradation of the fuel cell performance. In this paper, we propose a method for simultaneously evaluating the degradation rates of these components by combining electrochemical characterization with operando synchrotron X-ray radiography. The open-circuit voltage, electrochemically active surface area (ECSA), and water saturation were used as the degradation indicators for the PEMs, CLs, and GDLs, respectively. The results of two accelerated stress tests (loading and start-stop cycles) after 10,000 cycles showed that the increase in water saturation owing to the loss of hydrophobicity due to carbon corrosion in the cathode GDL occurred on the same timescale as the degradation in the PEM and cathode CL. Specifically, during the load cycle AST, the cathode CL degraded with a 26% reduction in the ECSA along with the cathode GDL degradation with a 10% increase in water saturation. This suggests that more efforts should be devoted to studies on the durability of GDLs for heavy-duty applications.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-9"},"PeriodicalIF":6.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00524-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142439145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogen diffusion and trapping in a cryogenic processed high-Cr ferrous alloy 低温加工高铬铁合金中的氢扩散和捕获

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-11 DOI: 10.1038/s41529-024-00522-1

Patricia Jovičević-Klug, J. Manoj Prabhakar, Cristiano Kasdorf Giesbrecht, Tim M. Schwarz, Carsten Bonnekoh, Michael Rieth, Michael Rohwerder

引用次数: 0

The microstructure-corrosion relationships in laser-welded dissimilar steel-to-aluminium joints 激光焊接异种钢铝接头的微观结构-腐蚀关系

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-11 DOI: 10.1038/s41529-024-00517-y

J. I. Ahuir-Torres, S. Jabar, P. Franciosa, D. Ceglarek, H. R. Kotadia

引用次数: 0

Nanoscale heterogeneities dictate corrosion pathways in a high-strength aluminum alloy 纳米级异质性决定了高强度铝合金的腐蚀途径

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-03 DOI: 10.1038/s41529-024-00520-3

S. Choudhary, R. G. Kelly

引用次数: 0

Inhibitor_Mol_VAE: a variational autoencoder approach for generating corrosion inhibitor molecules Inhibitor_Mol_VAE：生成缓蚀剂分子的变异自动编码器方法

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-10-01 DOI: 10.1038/s41529-024-00518-x

Haiyan Gong, Zhongheng Fu, Lingwei Ma, Dawei Zhang

引用次数: 0

The dual role of dissolution at a crack tip 裂纹尖端溶解的双重作用

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-30 DOI: 10.1038/s41529-024-00513-2

Mingjie Zhao, Wenjia Gu, Derek H. Warner

引用次数: 0

Mechanistic elucidation of the molecular weight dependence of corrosion inhibition afforded by polyetherimide coatings 从机理上阐明聚醚酰亚胺涂层的缓蚀作用与分子量的关系

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-29 DOI: 10.1038/s41529-024-00516-z

Tiffany E. Sill, Victor Ponce, Carlos Larriuz, Ron Chertakovsky, Caroline G. Valdes, Torrick Fletcher Jr, Jakob Nielsen, Kerry Fuller, Homero Castaneda, Rachel D. Davidson, Peter M. Johnson, Sarbajit Banerjee

{"title":"Mechanistic elucidation of the molecular weight dependence of corrosion inhibition afforded by polyetherimide coatings","authors":"Tiffany E. Sill, Victor Ponce, Carlos Larriuz, Ron Chertakovsky, Caroline G. Valdes, Torrick Fletcher Jr, Jakob Nielsen, Kerry Fuller, Homero Castaneda, Rachel D. Davidson, Peter M. Johnson, Sarbajit Banerjee","doi":"10.1038/s41529-024-00516-z","DOIUrl":"10.1038/s41529-024-00516-z","url":null,"abstract":"Corrosion of critical metal components exacts a heavy toll in terms of maintenance and replacement costs and damage to ecosystems upon failure. Polymeric barrier coatings protect against corrosion; however, design principles for modulating polymer structure to improve corrosion inhibition remain contested and elusive. Here, we examine molecular-weight-dependent differences in the efficacy of corrosion inhibition on aluminum substrates afforded by polyetherimide (PEI) coatings. Analyses of coated substrates evidence a clear trend denoting improved corrosion inhibition for higher weighted-average molecular weight (MW) PEI. The more rigid and entangled macromolecular network of higher-MW variants exhibit stable impedance values, |Z|0.01 Hz ca. 1010 Ω/cm2, upon extended immersion in brine media, whereas lower-MW variants are readily hydrated and disentangled resulting in a significant reduction in impedance values. Results illuminate mechanistic understanding of molecular-weight-dependence in corrosion inhibition, advance a framework for considering the dynamical evolution of secondary structure, and exemplify generalizable design principles for corrosion inhibition.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-13"},"PeriodicalIF":6.6,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00516-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142329439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Repairment of carbon steel oxide scale using Ce³⁺ and Ni²⁺ doped sol-gel technique 利用掺杂 Ce³⁺ 和 Ni²⁺ 的溶胶-凝胶技术修复碳钢氧化鳞片

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-09-18 DOI: 10.1038/s41529-024-00515-0

Yanwei Zeng, Peng Xu, Tianguan Wang, Yuhao Xie, Guoqiang Liu, Huixuan Qian, Zhiyuan Feng, Bing Lei, Ping Zhang, Guozhe Meng

引用次数: 0