MgO-ZrO_2复合材料的烧结和热震稳定性  

Sintering and Thermal Shock Stability of MgO-ZrO_2 Composites

作　　者：姬莹莹[1] 卜景龙[1] 王榕林[1] 

机构地区：[1]河北联合大学,河北省无机非金属材料实验室,河北唐山063009

出　　处：《中国陶瓷工业》2014年第6期20-25,共6页China Ceramic Industry

基　　金：河北省钢铁联合基金(编号:2014209273)

摘　　要：以烧结镁砂和单斜氧化锆粉为原料，进行了MgO-ZrO2复合材料的制备。通过XRD和SEM-EDS分析及显气孔率、体积密度、常温抗折强度、线膨胀系数和1100℃~室温水冷热震稳定性的测试，探讨了ZrO2的用量对MgO-ZrO2复合材料的烧结和热震稳定性的影响。结果表明：随着ZrO2用量的增加，复合材料试样的致密度和常温抗折强度呈现出先增大后减小的趋势，复合材料试样的热膨胀系数逐步减小，复合材料试样的热震稳定性呈现出先变好后变差的趋势；当ZrO2用量为30%时，MgO-ZrO2复合材料试样的烧结性能和热震稳定性最好。MgO-ZrO2 composites were prepared using magnesite clinker and monocline zirconia as raw materials. The inlfuence of ZrO2 content on the sintering and thermal shock stability of MgO-ZrO2 composites were investigated by XRD SEM-EDS and the tests of apparent porosity, bulk density, lfexural strength, linear expansibility and thermal shock stability. The results showed：with the increasing amount of ZrO2 , their density and lfexural strength at room temperature ifrst increased and then decreased, their linear expansibility reduced gradually, and their thermal shock stability ifrst rose and then lowered;MgO-ZrO2 composites showed excellent sintering performance and thermal shock stability at 30%ZrO2.

关 键 词：MGO-ZRO2 复合材料 烧结 热震稳定性 

分 类 号：TQ175.1[化学工程—硅酸盐工业]