材料期刊网

为了获得流动性和稳定性较好的氧化镁稳定氧化锆浆料,通过黏度测试和沉降试验,并结合Zeta电位和粒径测试,分析了回含量、分散剂加入量、浆料pH和球磨时间对浆料流动性和稳定性的影响.结果表明:随着固含量增大,浆料的黏度增大,流动性变差,稳定性增加;随着分散剂加入量和浆料pH增加以及球磨时间延长,浆料的流动性先增强后变差,稳定性先增强后趋于稳定;浆料呈碱性时,Zeta电位的绝对值较大,浆料的稳定性好;随分散剂加入量增加,Zeta电位的绝对值先增大后减小;当固含量为45％、加入稳定剂的体积分数为2％、浆料pH为9、球磨时间为48 h时,可获得流动性和稳定性均较好的陶瓷浆料.

In order to obtain magnesia stabilized zirconia slurry with good liquidity and stability,the effects of solid content,dispersant addition,slurry pH and milling time on the liquidity and stability of slurry were analyzed by viscosity test,sedimentation test and Zeta potential and particle size test.The results show that with the increase of solid content,viscosity and stability of slurry increase and liquidity decreases.Liquidity of slurry increases and then decreases,and the stability increases and then changes little as the increase of dispersant addition,slurry pH and milling time.Absolute value of Zeta potential of the alkaline slurry is larger and its stability is the best.Zeta potential increases and then decreases with the increase of dispersant addition.When the solid content was 45％,volume fraction of dispersant was 2％,slurry pH was 9 and milling time was 48 h,the ceramic slurry can obtain better liquidity and stability.