The Effect of Post-Heat Treatment on Microstructure of 316L Cold-Sprayed Coatings and Their Corrosion Performance

被引：0
作者：
B. Dikici
H. Yilmazer
I. Ozdemir
M. Isik
机构：
[1] Yuzuncu Yil University,Department of Mechanical Engineering
[2] Yildiz Technical University,Department of Metallurgical and Materials Science Engineering
[3] Katip Celebi University,Department of Mechanical Engineering
[4] Tohoku University,Institute for Materials Research
来源：
Journal of Thermal Spray Technology | 2016年 / 25卷
关键词：
coating; cold spray; corrosion; heat treatment; microstructure; process gas;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The combined effects of process gases and post-heat treatment temperature on the microstructure of 316L cold-sprayed coatings on Al5052 substrates have been investigated in this study. The stainless steel coatings were subjected to heat treatment at four different temperatures (250, 500, 750, and 1000 °C) to study the effect of heat treatment. In addition, the corrosion performances of the coatings at different process temperatures have been compared using the potentiodynamic scanning technique. Microstructural characterization of the coatings was carried out using scanning and transmission electron microscopy and x-ray diffraction. The results of present study showed that cold-sprayed stainless steel coatings processed with helium exhibited higher corrosion resistance than those of coatings sprayed with nitrogen process gas. This could partially be attributed to the reduction in porosity level (4.9%) and improvement of particle-particle bonding. In addition, evaluation of the mechanical and microstructural properties of the coatings demonstrated that subsequent heat treatment has major influence on the deposited layers sprayed with He process gas.
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页码：704 / 714
页数：10
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