玻璃-陶瓷涂层的热处理工艺和显微结构与其摩擦学性能之相关性的考察  

The Influence of Heat Treatment and Microstructure of Glass-Ceramics Coating on Tribological Properties

作　　者：鄂吉胜[1] 张军[1] 马潮 党鸿辛 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑开放研究实验室,兰州730000

出　　处：《摩擦学学报》1992年第3期233-239,共7页Tribology

基　　金：中国科学院青年研究奖励基金资助项目

摘　　要：作者研制了一种涂覆在3Cr13钢上的锂铝硅体系玻璃-陶瓷涂层(简称GCC-0301)。通过对GCC-0301的显微结构与热处理工艺之关系的考察发现,温度650℃和时间60分钟为其最佳热处理条件。在此条件下制备的GCC-0301中生成了LiAlSi-3O_3和Al_2Ti_2O-7结晶,连续相是微米量级的结晶相。这种显微结构的形成明显地提高了GCC-0301的物理性能。在给定的试验条件下,GCC-0301与GCr15钢配副时的磨损率是随其热处理时间的延长而降低。作者指出,GCC-0301的磨损率是随其显微硬度和LiAlSi_3O_3之相对结晶度的增加而降低,并且强调GCC-0301的磨损与陶瓷的类似,其主要磨损形式是表面断裂。The method for preparing Li-Al-Si glass-ceramics coatings (GCC-0301) on 3 Crl3 steel surface was described in this paper, and the relationship between the microstructure of GCC-0301 and heat treatment was also investigated. The results shown that the optimum heat treatment temperature and time for GCC-0301 is 650℃ and 60 minutes respectively, under these conditions, LiAlSi3O8 and Al2Ti2O7 crystals were formed in GCC-0301, the continuous phase is crystalline which is of the order of micrometre. Analyzing the microstructure of GCC-0301 and its physical and tribological properties, it is concluded that: a. The crystallites which are formed during heat treatment can improve obviously impact resistance, thermal shock property, fracture toughness and microhardness. b. Under the given conditions (pin-disk tester, 4.5N of load, 0.33m/s of speed) , when the GCC-0301 slides against GCrl5 steel the wear rate decreases along with increasing of heat treatment time and relative crys-tallinity of LiAlSi3O8. c. The wear rate of GCC-0301 is similar to that of ceramics, the wear is mainly resulted from the fracture of friction surface and the fracture is happened mostly in the fragile glass phase.

关 键 词：热处理 玻璃-陶瓷 涂层 摩擦学 

分 类 号：TQ174.758[化学工程—陶瓷工业]