期刊论文

Study on High Temperature Oxidation Resistance of Cr-coated Zirconium Alloy

中文

稀有金属与硬质合金

1004-0536

2017

45

6

71-75

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（湘教发[2011]76） 湖南省高校重点实验室基金项目（湘教发[2014]85）

本校为第一机构

采用多弧离子镀膜技术在锆合金表面制备了厚度约为12μm的Cr金属层,研究了镀Cr试样在1 200℃高温下的氧化行为及膜层与基体之间的结合力。SEM分析结果表明,多弧离子镀膜层厚度均匀,表面平整,膜基界面分明,但表面存在大量的微孔洞及大颗粒。高温氧化实验结果表明,镀膜试样的抗高温氧化性能明显优于原始锆合金,在1 200℃下氧化2 400s后表面形成了大量的Cr_2O_3,其单位面积增重仅为原始锆合金的12%。划痕实验结果表明,镀膜试样可承受的临界载荷为18N,膜层与基体之间的结合性能良好。

Cr metal layer of about 12μm thickness was prepared on zirconium alloy surface by multi-arc ion plating technology.Oxidation behavior and film adhesion strength to substrate of Cr-coated sample were investigated at 1 200℃high temperature.The results from SEM analysis show that multi-arc ion plating layer has uniform thickness,smooth surface and clear film/substrate interface,and there are a large number of micro-holes and large particles on its surface.High temperature oxidation experimental results show that Cr -coated sample has obviously b...