Materials and Corrosion最新文献_第10页

Effects of stannum (Sn) addition on corrosion behavior and biocompatibility in vitro of biodegradable Zn–Sn alloys 添加锡对可生物降解Zn-Sn合金体外腐蚀行为和生物相容性的影响

Materials and Corrosion Pub Date : 2021-09-15 DOI: 10.1002/maco.202112722

P. Guo, R. Bagheri, Lijing Yang, Zhenlun Song, Yaxuan Liu

{"title":"Effects of stannum (Sn) addition on corrosion behavior and biocompatibility in vitro of biodegradable Zn–Sn alloys","authors":"P. Guo, R. Bagheri, Lijing Yang, Zhenlun Song, Yaxuan Liu","doi":"10.1002/maco.202112722","DOIUrl":"https://doi.org/10.1002/maco.202112722","url":null,"abstract":"Zinc (Zn) and its alloys, as novel biodegradable metals, hold great potential in bone implant and metallic stents. Stannum (Sn), an essential trace element, plays an important role in maintaining life activities. Herein, Sn is selected as an alloying element to be added into the Zn matrix to explore the possibility of Zn–Sn alloy as a biodegradable metal for clinical application. This article systemically studies the effects of Sn content on microstructural, electrochemical behavior, corrosion rate, and in vitro biocompatibility of Zn–Sn alloys. Results indicate that the Sn‐rich phase is the main form of Sn in the as‐extruded alloys, and the solid solubility is in an extremely minute quantity. The corrosion of Zn–Sn alloys in conventional simulated body fluid (c‐SBF) solution shows apparent electrochemical characteristics, and Sn‐rich phases are corroded preferably. The corrosion rates of Zn–1.0Sn and Zn–2.0Sn are under 0.2 mm year−1, which can satisfy the requirement of biodegradable medical materials. In addition, Zn–1.0Sn exhibits much better cytocompatibility and hemocompatibility than Zn–2.0Sn. Therefore, Zn–Sn alloy shows great potential applications in the biological field and can be further studied and developed.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"43 1","pages":"231 - 241"},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87863860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of dislocation on sour corrosion of carbon steel in a low H2S sour environment 位错对低硫化氢酸性环境下碳钢酸蚀的影响

Materials and Corrosion Pub Date : 2021-09-14 DOI: 10.1002/maco.202112745

I. Samusawa, D. Izumi, J. Shimamura

引用次数: 3

Corrosion characteristics of T91 steel in lead–bismuth eutectic with different oxygen concentrations at 500°C T91钢在500℃不同氧浓度铅铋共晶中的腐蚀特性

Materials and Corrosion Pub Date : 2021-09-14 DOI: 10.1002/maco.202112505

S. Tian, Yongqiang Pang, Zhizhong Jiang, L. Luo, Zunqi Xiao

引用次数: 8

Effects of surface nanocrystallization on the oxide film formed on 316LN stainless steel in a high‐temperature aqueous environment 表面纳米化对高温水环境下316LN不锈钢氧化膜形成的影响

Materials and Corrosion Pub Date : 2021-08-06 DOI: 10.1002/maco.202112652

Xudong Chen, Xin Dai, H. Qian, Bin Yang, Jiqing Zhao

引用次数: 2

Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I− ions: Experimental and theoretical studies 氨基酸对316L不锈钢的缓蚀作用及I -离子的协同效应:实验与理论研究

Materials and Corrosion Pub Date : 2021-08-06 DOI: 10.1002/maco.202112511

Rongxuan Zhao, Qian Yu, L. Niu

{"title":"Corrosion inhibition of amino acids for 316L stainless steel and synergistic effect of I− ions: Experimental and theoretical studies","authors":"Rongxuan Zhao, Qian Yu, L. Niu","doi":"10.1002/maco.202112511","DOIUrl":"https://doi.org/10.1002/maco.202112511","url":null,"abstract":"The inhibition effect of amino acids l‐lysine (Lys) and l‐arginine (Arg), which serve as inhibition films for corrosion of 316L stainless steel in 0.5 M NaCl solution, is studied by electrochemical measurements. The adsorption of the inhibitor molecules on the steel surface is studied by Fourier transformed infrared spectroscopy (FTIR) and surface‐enhanced Raman spectroscopy (SERS), accompanied by the characterization of the metal surface by scanning electron microscopy (SEM). All in all, Lys or Arg can obviously restrain the corrosion of 316L steel, while the inhibition efficiency is even higher with the assistance of I− ions. Arg always has better inhibition performance than Lys regardless of the addition of I− ions. FTIR and SERS confirm the adsorption of amino acids on the metal surface; at the same time, the morphology and protection effect of the inhibition films is clearly illustrated via SEM images. Thanks to all experimental measurements as mentioned above and theoretical calculations, a mechanism model is proposed to simulate the corrosion inhibition process of amino acids and the synergistic effect of I− ions on 316L steel.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"15 1","pages":"31 - 44"},"PeriodicalIF":0.0,"publicationDate":"2021-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84965695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

The long‐term corrosion performance and adhesion properties of 7B04 aluminum alloy/anodic film/epoxy primer system in acidic NaCl solution 7B04铝合金/阳极膜/环氧底漆体系在酸性NaCl溶液中的长期腐蚀性能和附着力

Materials and Corrosion Pub Date : 2021-08-03 DOI: 10.1002/maco.202112527

Yangguang Zhang, Y. Chen, Yong Zhang, G. Bian

{"title":"The long‐term corrosion performance and adhesion properties of 7B04 aluminum alloy/anodic film/epoxy primer system in acidic NaCl solution","authors":"Yangguang Zhang, Y. Chen, Yong Zhang, G. Bian","doi":"10.1002/maco.202112527","DOIUrl":"https://doi.org/10.1002/maco.202112527","url":null,"abstract":"The deterioration process and corrosion protective effect of 7B04 aluminum alloy/anodic film/epoxy primer system in acidic NaCl solution for 3024 h were investigated by optical/electron microscopes, electrochemical impedance spectroscopy (EIS), scanning Kelvin probe (SKP), and pull‐off adhesion test. The results showed that the protective system of anodic film and epoxy primer can protect aluminum alloy from pitting corrosion after immersion for 2352 h. According to the response characteristics of EIS and SKP, different stages of the failure process could be identified. During the first 100 h of immersion, the water transport in the coating followed Fickian law, and the water diffusion coefficient was 2.03 × 10−11 cm2/s, which demonstrated that the coating has good impermeability. Anodizing and coating treatment improved the open circuit potential and impedance of 7B04 aluminum alloy and made the distribution of Volta potential more uniform. The decreasing rate of wet adhesion strength was first fast and then slow, which was similar to the variation rule of coating resistance. The anodic film enhanced the adhesion between epoxy primer and substrate so that the failure nature of the adhesion test was mainly the cohesive failure of the epoxy primer.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"250 1","pages":"105 - 93"},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76187901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Susceptibility of chloride ion concentration, temperature, and surface roughness on pitting corrosion of CoCrFeNi medium‐entropy alloy 氯离子浓度、温度和表面粗糙度对CoCrFeNi中熵合金点蚀的影响

Materials and Corrosion Pub Date : 2021-08-01 DOI: 10.1002/maco.202112557

Dongpeng Wang, Xin Li, Z. Chen, Shuai Wang, Yuxin Wang, Wei-hong Liu, Weili Li, R. Xue, C. Liu

{"title":"Susceptibility of chloride ion concentration, temperature, and surface roughness on pitting corrosion of CoCrFeNi medium‐entropy alloy","authors":"Dongpeng Wang, Xin Li, Z. Chen, Shuai Wang, Yuxin Wang, Wei-hong Liu, Weili Li, R. Xue, C. Liu","doi":"10.1002/maco.202112557","DOIUrl":"https://doi.org/10.1002/maco.202112557","url":null,"abstract":"The influence and susceptibility of chloride ion concentration, temperature, and surface roughness on corrosion behavior of single‐phase CoCrFeNi medium‐entropy alloy (MEA) was examined in NaCl solution. Potentiodynamic polarization results revealed that the corrosion performance of the sample deteriorated with an increase of the chloride ion concentration, temperature, and surface roughness. The pitting potential decreased drastically for samples with higher surface roughness. According to electrochemical impedance spectroscopy, the charge transfer resistance decreased when chloride ion concentration, temperature, and surface roughness increased. Scanning electron micrographs also indicated an increased extent of corrosion damage, especially for the sample with higher surface roughness. It is found that the corrosion resistance is closely related to the wettability of samples, and the surface with the highest roughness shows higher hydrophilicity. The combined results suggested that the pitting damage is more sensitive to surface roughness. Our findings provide a further understanding of the corrosion mechanism of MEAs and guide their applications as structural materials.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"127 1","pages":"106 - 115"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85723798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Masthead: Materials and Corrosion. 08/2021 报头:材料与腐蚀。08/2021

Materials and Corrosion Pub Date : 2021-08-01 DOI: 10.1002/maco.202170082

引用次数: 0

A comparison of methods to assess the resistance of reinforcing steel against chloride‐induced corrosion in concrete: Particular consideration of 12% chromium steel 评估混凝土中钢筋抗氯化物腐蚀能力的方法比较:特别考虑12%铬钢

Materials and Corrosion Pub Date : 2021-07-16 DOI: 10.1002/MACO.202112609

C. Boschmann Käthler, G. Ebell, S. Kessler, Y. Schiegg, C. Dauberschmidt, U. Angst

引用次数: 4

Establishing multilayered coating on Mo–12Si–8.5 B alloy by Si pack cementation and its oxidation behavior at 900°C–1300°C 在Mo-12Si-8.5 B合金上建立Si包渗层及其900℃- 1300℃氧化行为

Materials and Corrosion Pub Date : 2021-06-30 DOI: 10.1002/maco.202012146

Juan Wang, Bin Li, Ruihong Li, Xuan Chen, Guojun Zhang

{"title":"Establishing multilayered coating on Mo–12Si–8.5 B alloy by Si pack cementation and its oxidation behavior at 900°C–1300°C","authors":"Juan Wang, Bin Li, Ruihong Li, Xuan Chen, Guojun Zhang","doi":"10.1002/maco.202012146","DOIUrl":"https://doi.org/10.1002/maco.202012146","url":null,"abstract":"A multilayered oxidation protection coating consisting of MoSi2 outer layer, Mo5Si3 internal layer, and Mo5SiB2/MoB inner layer was developed on the surface of Mo–12Si–8.5B 1.0 wt% ZrB2 alloy via Si pack cementation. The multilayered coating significantly enhanced the oxidation resistance of the alloy at 900°C, 1100°C, and 1300°C in the air by exhibiting negligible oxidation recession. MoSi2 outer layer provided admirable oxidation protection for the alloy at high temperatures by forming a thin and protective SiO2‐rich glass scale on its surface. This was supplemented by the Mo5Si3 internal layer and Mo5SiB2/MoB inner layer that reduced the thermal expansion mismatch between the MoSi2 outer layer and substrate, and therefore no obvious cracks were found in the MoSi2 outer layer. More importantly, the Mo5SiB2/MoB layer as an in situ barriers of Si interdiffusion ensured the stable existence of MoSi2 and Mo5Si3 layers without obvious thickness change during oxidation at 900°C and 1100°C. Mechanical property test indicated that the formation of the coating layers could not affect the fracture toughness of the alloy.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"32 1","pages":"1328 - 1337"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85390342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0