高耐蚀盐浴氮碳共渗加后氧化及低温氮碳共渗工艺的研究  

Nitrocarburizing Plus Oxidizing with High CorRosion Resistance and Low Temperature Nitrocarburizing on Salt Bath

作　　者：林峰[1] 梅坚[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030

出　　处：《热处理技术与装备》2007年第5期33-37,共5页Heat Treatment Technology and Equipment

摘　　要：开发了一种耐中性盐雾试验600h，大批量生产的工件耐盐雾试验150h以上的盐浴氮碳共渗加后氧化新技术。研究了一种使用温度为460—520℃的低温盐浴氮碳共渗工艺。分析了低温盐浴氮碳共渗工艺所获渗层的金相组织及硬度。与传统的570℃处理的盐浴氮碳共渗层的表面硬度、耐磨性及耐腐蚀性进行了对比。为广大热处理企业提供了两种新的处理工艺。A new process of nitrocarburizing on salt bath and cooling in the oxidizing bath was developed. The treated sample have an excellent corrosion resistance. The salt- water spray test shows that no corro- sion occurred during the duration of the test , which was terminated after 600 h. The time of salt - water spray test is longer than 150 h for the components treated by nitrocarburizing and colded in the oxidizing bath in batches. A low temperature nitrocarburizing process on salt bath was realized, the nitrocarburizing process was carried out at 460 - 520 ＇E. The hardness and microstructure of the treated parts were checked. A comparison of surface hardness and wear resistance as well as corrosion resistance of the specimens after the nitrocarburizing at low temperature and the traditional nitrocarburizing at 570 ℃ was presented. Two types of new surface treatment processes can be selected by many heat treatment factories.

关 键 词：低温 盐浴 氮碳共渗 氧化 

分 类 号：TG156.8[金属学及工艺—热处理]