稀土对Al_2O_3-TiC/Fe基金属陶瓷材料性能的影响  

Influence of Rare Earth on the Properties of Al_2O_3-TiC/Fe Based Metal Ceramic Materials

作　　者：谭训彦[1] 查丽霞 夏光华[1] 李小红[1] 廖文川[1] 朱小鑫 

机构地区：[1]景德镇陶瓷学院材料科学与工程学院,景德镇333000

出　　处：《人工晶体学报》2014年第5期1257-1262,共6页Journal of Synthetic Crystals

基　　金：江西省科技支撑计划项目(20132BB150014)

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。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（6 150 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.

关 键 词：AL2O3-TIC Fe 粉末冶金 真空烧结 吸水率 体积密度 

分 类 号：TH117.1[机械工程—机械设计及理论]