采用硬脂酸表面改性以改善陶瓷颗粒表面和有机粘结剂的相容性.结果表明,硬脂酸和陶瓷颗粒表面之间发生了稳定的化学结合,提高了注射喂料的流动性和坯体的强度.坯体显微结构分析表明,表面改性促进了粉体在有机粘结剂中的稳定分散.粉体表面改性明显提高了水脱脂速率,坯体7 h脱脂率达到了88%,脱脂过程中水溶性组分在坯体中的表观扩散系数为1.14×10-7cm2/s.
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