Effects of Annealing Below Glass Transition Temperature on the Wettability and Corrosion Performance of Fe-based Amorphous Coatings  

作　　者：Dandan Liang Xiaodi Liu Yinghao Zhou Yu Wei Xianshun Wei Gang Xu Jun Shen 

机构地区：[1]College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,China [2]Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,College of Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China [3]College of Materials Science and Engineering,Tongji University,Shanghai 201804,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2022年第2期243-253,共11页金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51901138);the Postdoctoral Science Foundation of China(No.2020M672788);the National Key Research and Development Program of China(No.2018YFA0703605)。

摘　　要：This study investigated the effect of annealing below glass transition temperature(T_(g))on the microstructural characteristics,mechanical property,wettability,and electrochemical performance of activated combustion-high velocity air fuel(AC-HVAF)-sprayed Fe-Cr-Mo-W-C-B-Y amorphous coatings(ACs).Results showed that Fe-based ACs with a thickness of~300μm exhibited a fully amorphous structure with low oxidization.Originating from the reduced free volume,sub-T_(g) annealing increased the thermal stability,hardness,and surface hydrophobicity of Fe-based ACs.The enhanced corrosion resistance of sub-T_(g) annealed ACs in 3.5 wt%NaCl solution was attributed to the increased surface hydrophobicity and passivation capability.This finding elucidates the correlation between sub-T_(g) annealing and the properties of Fe-based ACs,which promotes ameliorating ACs with superior performance.

关 键 词：Activated combustion-high velocity air fuel(AC–HVAF) Amorphous coating Sub-Tg ANNEALING Free volume WETTABILITY Electrochemical behavior 

分 类 号：TG156.2[金属学及工艺—热处理] TG174.4[金属学及工艺—金属学]