硅酸盐学报2017，Vol.45Issue(6)：829-835,7.DOI:10.14062/j.issn.0454-5648.2017.06.12
Al2O3-ZrO2/Co-Ni-BN金属陶瓷的制备与性能
Preparation and Properties of Al2O3-ZrO2/Co-Ni-BN Cermets
摘要
Abstract
Al2O3-ZrO2(3Y)/Co-Ni-BN cermet was prepared by a vacuum hot pressing sintering method. The microstructure and fracture mode of metal ceramic was measured viascanning electron microscopy and energy dispersive spectroscopy. Moreover, effects of Ni-Co metallic phase andh-BN reinforced ceramic phase contents on the mechanical properties were investigated. In addition, the thermal shock resistance of Al2O3-ZrO2(3Y)/Co-Ni-BN was also analyzed. The results show that when the content of Ni-Co-BN is 12% (in mass fraction) the optimum bending strength, fracture toughness and hardness of metal ceramic prepared at 1500℃ and 30 MPa for 30 min are 1423 MPa, 14.7 MPa·m1/2 and 13.4 GPa, respectively. The threshold temperature difference of thermal shock is 500℃ . The thermal shock fracture factor(R'), damage factor (R″″)and rupture power are 12981.8 J/(m2·s), 145μm and 557 J/m2, respectively.关键词
氧化铝-氧化锆/钴-镍-氮化硼/金属陶瓷/真空热压烧结/抗热震性能Key words
alumina-zirconia/cobalt-nickel-boron nitride/cermet/vacuum hot pressing sintering/thermal shock resistance分类
通用工业技术引用本文复制引用
聂力,马伟民,张勇,马雷,张艳丽..Al2O3-ZrO2/Co-Ni-BN金属陶瓷的制备与性能[J].硅酸盐学报,2017,45(6):829-835,7.基金项目
沈阳市先进陶瓷制备技术及应用重点实验室建设项目(F10-053-2-00)资助. （F10-053-2-00）
