氮化硅泡沫陶瓷浆料性能的研究  

THE STUDY OF THE SLURRY PROPERTIES OF Si_3N_4 FOAM CERAMICS

作　　者：高晓菊[1,2] 李国斌[2] 李金富[1,2] 成来飞[1] 燕东明[2] 

机构地区：[1]西北工业大学,超高温结构复合材料国防科技重点实验室,西安710072 [2]中国兵器工业第五二研究所烟台分所,烟台264003

出　　处：《陶瓷学报》2010年第3期358-362,共5页Journal of Ceramics

基　　金：国际科技合作项目(编号:2008DFR50390)

摘　　要：系统地研究了料浆pH值、分散剂及固相含量等因素对陶瓷料浆电势和流变性的影响,制备出了有良好稳定性和流动性的氮化硅料浆。研究表明,静电空间位阻稳定机制是陶瓷料浆稳定性的根本原因。料浆pH值、分散剂和固相含量等因素对陶瓷料浆的分散稳定性及流变性均有一定的影响。料浆的pH值为10-11、分散剂PAA-NH4用量为1 wt.%以及固相含量为50 wt.%时,可获得具有良好性能的氮化硅料浆浓悬浮体。In this paper,the effect of pH value,dispersant and solid content on zeta potential and viscosity of silicon nitride slurry was systematically investigated,and a slurry with good stability and viscosity was prepared.The experimental results show that the stability of ceramic slurry is related to electrostatic steric stabilization mechanism and the dispersed stability and rheology property of the slurry are influenced by the pH value,dispersant and solid content.When the pH value is 10-11,the content of dispersant is 1wt% and solid content is 50wt%,a slurry with good performance can be obtained.

关 键 词：泡沫陶瓷 氮化硅 浆料 ζ电势 粘度 

分 类 号：TQ174.758[化学工程—陶瓷工业]