【摘要】 以TiC、C、Mn、Ni、Mo、α-Al2O3微粉和还原Fe粉为主要原料,采用粉末冶金方法制备Al2O3-TiC/Fe金属基陶瓷材料。利用管式真空烧结炉(150 mm)高真空(2.5 Pa)烧结,烧成温度为1530℃,保温时间90 min。研究探讨不同稀土添加剂对试样吸水率及体积密度的影响,揭示材料的耐磨性能,以及稀土添加剂对试样的显微组织影响。试验表明:在以上条件下,添加0.3%的Y2O3时,Al2O3-TiC/Fe基金属陶瓷材料的吸水率和体积密度达到了最佳状态,分别为0.0310%和6.7770 g/cm3,此时材料的耐磨性能得到提高。更多还原

【Abstract】 Al2O3-TiC/Fe metal-base ceramic composite materials were prepared by means of powder metallurgy method with TiC,C,Mn,Ni,Mo,α-Al2O3 powders and reduction of Fe powder as the main raw materials.It was sintered in a tube vacuum sintering furnace(Ф150 mm) with high vacuum of 2.5 Pa,1530 ℃,holding time of 90 min.The influences of different rare earth on water absorption,bulk density,microstructure and wear-resistant property were investigated.The results show that the water absorption and bulk density(0.0310% and 6.7770 g/cm3 respectively) of Al2O3-TiC/Fe cermets wear the optimum by doping 0.3wt% Y2O3,and the wear resistance is improved.更多还原