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Effect of dopping ZrN + AlN + Y2O3 complex additive on sintering of Si3 N4 ceramic materials
Author(s): 
Pages: 426-428
Year: Issue:  6
Journal: REFRACTORIES

Keyword:  ZrN+AlN+Y2O3Si3N4陶瓷助烧结剂烧结性能;
Abstract: 对比了ZrN+AlN助烧结剂与ZrN+AlN+Y2O3助烧结剂对1800℃、25 MPa下热压烧成Si3N4陶瓷显微结构和力学性能的影响,并着重对ZrN+AlN+Y2O3复合助烧结剂促进Si3N4陶瓷烧结的机理进行了探讨.结果表明:加ZrN+AlN+Y2O3助烧结剂能明显促进Si3N4陶瓷的烧结,提高陶瓷强度,其相对密度可达97.84%,常温弯曲强度为601.21 MPa,断裂韧性达8.9 MPa·m1/2;而加ZrN+AlN助烧结剂的Si3N4陶瓷未致密化.
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