灰口铸铁表面铸渗硼的试验研究  

Study of Casting-Boronizing on Grey Cast Iron Surface

作　　者：李长林[1] 胡三媛[1] 张淑艳[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《金属热处理》2005年第6期25-27,共3页Heat Treatment of Metals

基　　金："黄河泵过流部件耐磨性研究"横向课题

摘　　要：采用均匀设计法对铸渗涂料的配比进行了研究,分析了用此涂料铸渗后渗层的组织和性能,经过多元回归分析,得出铸渗涂料最佳配方为60%B4C,14%NaF,1.2%Cu,24.8%SiC。用该配方可以在灰口铸铁HT200表面获得一层3mm左右的耐磨复合层,其耐磨性约为基体试样的2.2～2.5倍。The compositions of cast-infiltration coating by uniform design method, the microstructure and properties of the composite layers were studied. With the optimum prescription (60% B4C, 14% NaF, 1.2% Cu, 24.8% SiC) suggested by multi-factor regression analysis, the wear resistance layers on the surface of HT200 gray cast iron of about 3mm depth is obtained, and its wear resistance is 2.2-2.5 times larger than that of the matrix material.

关 键 词：灰口铸铁 铸渗涂料 渗层 耐磨性 

分 类 号：TG156.8[金属学及工艺—热处理]