采用3种不同形貌的Al2O3原料对注凝成型制备ZrO2/Al2O3 (ZTA)陶瓷工艺中悬浮体的流变性能进行了研究.以低毒的单体N,N-二甲基丙烯酰胺(DMAA)制备了ZrO2/Al2O3坯体和陶瓷.讨论了3种不同形貌的Al2O3原浆料的分散剂用量、球磨时间和固含量对浆料流变性的影响.Al2O3粉体呈扁平状有利于降低浆料的黏度,Al2O3粉体呈棒状对生坯强度的提高有利.制得的3种ZrO2/Al2O3坯体颗粒间结合紧密,抗弯强度分别达到21.45,19.87,25.90MPa. Al2O3粉体呈颗粒状有利于最终陶瓷力学性能的提高,陶瓷的抗弯强度及断裂韧性分别为680MPa和7.49 MPa·m1/2,453.1MPa和6.8 MPa·m1/2,549.4 MPa和6.34 MPa·m1/2.
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