摘要
采用金相显微镜,XRD,SEM等检测方法对经不同盐浴配方深层QPQ技术处理后的45钢与35CrMo钢进行分析,找出具有较深的化合物层及薄的疏松层的最佳盐浴配方。结果表明,45钢在这[Na+]/[K+]为4∶6,[CNO-]为20%时,致密渗层最厚为61.7μm,疏松层最小为9μm;35CrMo钢在[Na+]/[K+]为4∶6,[CNO-]为30%时,致密渗层最厚为54.4μm,疏松层最小为9μm。
Using metallographic microscope, XRD, SEM, the optimal balt salt formulation for 45 steel and 35CrMo steel which treated by deep QPQ technology in different salt bath composition were analysed . The results show that the deepest compact compound layer and less porous layer of 45 steel is respectively 61.7μm and 9μm under the conditions of [ Na ＋ ] / [ K ＋] = 4：6, [ CNO- ] = 20%. The deepest compact compound layer and less porous layer of 35CrMo steel is respectively 54. 4 μm and 9 μm under the conditions of [ Na ＋]/[ K ＋] = 4：6, [CNO- ] ：30%.
出处
《金属热处理》
CAS
CSCD
北大核心
2012年第6期63-65,共3页
Heat Treatment of Metals
基金
国家自然科学基金项目(51071130)
关键词
深层QPQ技术
盐浴配方
化合物层
疏松
deep QPQ technology
salt bath composition
compound layer
porosity
