溶胶凝胶法陶瓷结合堆积磨料的制备与性能研究  

Preparation and Properties of Stacked Abrasive Using Vitrified Bond by Sol-Gel Method

作　　者：方文俊[1,2] 万隆[1,2] 宋冬冬[1] 王俊沙[1] 刘会娟[1] 时丹[1] 

机构地区：[1]湖南大学材料科学与工程学院,长沙410082 [2]湖南大学喷射沉积技术及应用湖南省重点实验室,长沙410082

出　　处：《人工晶体学报》2014年第9期2192-2197,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51375157)

摘　　要：采用溶胶凝胶法制备了球形陶瓷堆积600#SiC磨料,利用Zeta电位、SEM和FTIR等方法对样品进行分析表征。结果表明:600#SiC表面电荷大于240#SiC,说明前者具有更好的亲水性;酸性硅溶胶加入到铝溶胶中并没有引起聚沉;H3BO3对铝溶胶丁达尔现象影响较小;NaNO3、Zn(NO3)2、LiNO3会造成铝溶胶胶粒的长大,混合溶胶液粒径为545.4 nm;结合剂量为4wt%时,溶胶凝胶法低于干粉法陶瓷堆积磨料磨削粗糙度,Ra达到0.35μm。The spherical ceramic stacked 600#SiC abrasive were prepared by sol-gel method.The sample were characterized by Zeta,SEM and FTIR.The results show that the surface charge of 600 # SiC is greater than 240#SiC and the hydrophilicity of the former are better.Acidic silica sol did not cause the coagulated when it was added into aluminum sol.H3BO3 had little effect on the aluminum sol＇s Tyndall phenomenon,NaNO3,Zn（ NO3）2,LiNO3 will cause aluminum sol grow,hybrid sol particle size is 545.4 nm; when vitrified dose is 4wt%,sol gel method is lower grinding roughness of stacked abrasive than the dry-powder method,whose Ra reached 0.35 μm.

关 键 词：溶胶-凝胶 陶瓷结合剂 堆积磨料 粗糙度 

分 类 号：TG732[金属学及工艺—刀具与模具]