等离子涂层表面耐高温封孔剂的制备研究  

Preparation of Sealing Reagent on Plasma Sprayed Coating for High Temperature

作　　者：王辉[1] 赵晓东[1] 刘富荣[1] 曾克里[1] 

机构地区：[1]北京矿冶研究总院,北京100044

出　　处：《有色金属（冶炼部分）》2008年第S1期50-52,56,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：以正硅酸乙酯为原料,盐酸为催化剂制备了用于耐高温封孔处理的SiO_2溶胶,封孔处理后的涂层致密,表面光洁度好。对封孔前后涂层性能的测试表明:经过封孔后,大幅度提高涂层耐酸和耐高温性能,增强了涂层对基材的保护作用。Taking HCl as catalyzer,silica sol were prepared with the tetraethyl orthosilicate sol-gel (TEOS).The sol was used for sealing treatment spraying coating at high temperature,the density and surface finish quality of coating was improved.The test result of the performance before and after coating sealing treatment shows that the resistance to acid and the resistance to corrosion at high temperature are improved greatly after sealing;meanwhile,the protection of coating on matrix is intensified by coating sealing reagent.

关 键 词：热喷涂 SiO₂溶胶 封孔剂 

分 类 号：TG174.4[金属学及工艺—金属表面处理]