放电等离子(SPS)快速烧结可加工陶瓷Ti_3AlC_2  

Machinable Ti_3AlC_2Ceramics Produced by Spark Plasma Sintering

作　　者：郭俊明[1] 陈克新[1] 刘光华[1] 周和平[1] 宁晓山[1] 

机构地区：[1]清华大学新型陶瓷与精细工艺国家重点实验室

出　　处：《稀有金属材料与工程》2005年第1期132-134,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(50102002)

摘　　要：利用放电等离子烧结技术研究了SHS的Ti3AlC2粉体的烧结过程.烧结温度1 450℃,压力20 MPa,真空烧结,保温5 min,可获得相对密度达98.4%的致密烧结体,HV可达3.8 GPa;烧结温度为1 500℃,则可获得完全致密的烧结体,HV可达4.2 GPa;烧结体的维氏硬度随烧结温度(1300℃～1500℃)的升高而增大;SEM分析表明,SPS技术烧结制备的Ti3AlC2陶瓷,片层大小随烧结温度的升高而增大.Machinable ceramics consisting of SHS Ti3AlC2 powders were first studied by Spark Plasma Sintering (SPS). Relative density of sintered Ti3AlC2 sample obtained at 1450°C and 20 MPa 5 min under vacuum is 98.4%. Sample sintered at 1500°C is full dense. The Vickers hardness of sintered Ti3AlC2 samples is enhanced with the increase of sintering temperature(1300°C-1500°C ). The SEM micrographs show that the layered grain size of sintering sample sintered by SPS increase with sintering temperature.

关 键 词：放电等离子烧结(SPS) TI3ALC2 可加工陶瓷 显微结构 

分 类 号：TQ174[化学工程—陶瓷工业]