期刊论文

Effects of Heat Treatment Temperature on Microstructure and Properties of Cr/Al Coatings

中文

表面技术

1001-3660

2017

46

12

78-83

10.16490/j.cnki.issn.1001-3660.2017.12.014

国家科技重大专项子课题项目（2015ZX06004001-002） 湖南省重点学科建设项目（[2011]76）~~

本校为第一机构

目的提高物理气相沉积Cr/Al涂层与基材锆合金的结合强度,减少涂层表面微观缺陷及内应力。方法采用多弧离子镀及磁控溅射技术在锆合金表面溅射Cr/Al涂层,并将涂层试样分别置于600、800℃保护气氛炉中热处理30 min。利用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、X射线光电子能谱仪（EDS）及光学显微镜（OM）,分析了Cr/Al涂层热处理前后相组成、表面形貌、截面形貌、元素成分变化及涂层剪切后的剥落形貌。利用弹簧拉压试验机,测试了未处理涂层、600℃和800℃热处理涂层试样与基材锆合金的结合强度。结果 600、800℃热处理涂层相比未处理涂层,表面更加平滑,表面孔隙及微观缺陷较少,但与基材锆合...

The work aims to improve bonding strength of Cr/Al coatings prepared in the method of physical vapor deposition (PVD) and the substrate zirconium alloy, so as to reduce the internal stress and microdefects on the coatings. The Cr/Al coatings were sputtered on the surface of zirconium alloy by multi-arc ion plating and magnetron sputtering. The coating samples were placed and heat treated in 600 ℃ and 800 ℃ protective atmosphere oven for 30 min. Phase composition, surface morphology, cross-sectional morphology and element compositional variati...