Formation and corrosion behavior of Fe-based amorphous metallic coatings prepared by detonation gun spraying

摘要：

Amorphous metallic coatings with a composition of Fe48Cr15Mo14C15B6Y2 were prepared by detonation gun spraying process. Microstructural studies show that the coatings present a densely layered structure typical of thermally sprayed deposits with the porosity below 2%. Both crystallization and oxidation occurred obviously during spraying process, so that the amorphous fraction of the coatings decreased to 54% compared with fully amorphous alloy ribbons of the same component. Corrosion behavior of the amorphous coatings was investigated by electrochemical measurement. The results show that the coatings exhibit extremely wide passive region and low passive current density in 3.5% NaCl (mass fraction) and 1 mol/L HC1 solutions, which illustrates excellent ability to resist localized corrosion.

关键词： Fe-based amorphous coating detonation gun microstructure corrosion behavior

作者: ZHOU Zheng WANG Lu WANG Fu-chi LIU Yan-bo

作者单位: College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, Chin School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081,China

会议类型: 国际会议

会议名称: 2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)

会议地点: 长沙

会议语种:英文

页码: 634-638

在线出版日期: 2009-11-22（万方平台首次上网日期，不代表论文的发表时间）