Preparation and Properties of Cu-Ti<sub>3</sub>AlC<sub>2</sub> Cermets

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Preparation and Properties of Cu-Ti₃AlC₂ Cermets
Vol. 30, Issue 11, Pages: 1066-1068(2010)
Published： 2010 ，
DOI：

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[1]艾桃桃,冯小明,赵卓玲.Cu-Ti_3AlC_2金属陶瓷的制备与性能研究[J].特种铸造及有色合金,2010,30(11):1066-1068+979.

Preparation and Properties of Cu-Ti₃AlC₂ Cermets. [J]. Special Casting & Nonferrous Alloys 30(11):1066-1068(2010)
[1]艾桃桃,冯小明,赵卓玲.Cu-Ti_3AlC_2金属陶瓷的制备与性能研究[J].特种铸造及有色合金,2010,30(11):1066-1068+979. DOI：

Preparation and Properties of Cu-Ti₃AlC₂ Cermets. [J]. Special Casting & Nonferrous Alloys 30(11):1066-1068(2010) DOI：

摘要

采用粉末冶金工艺制备Cu-Ti3AlC2金属陶瓷

借助XRD、SEM观察相成分和断口形貌

并研究Ti3AlC2增强相含量对产物密度、硬度、抗弯强度、断裂韧度和室温电导率的影响。结果表明

随着烧结温度的升高

Cu的衍射峰位置向左偏移

这与Al的固溶有关。随着Ti3AlC2含量的增加

金属陶瓷的密度和断裂韧度逐渐减小

硬度和电导率逐渐增大

抗弯强度先增大后减小。当Ti3AlC2含量为30%时

Cu-Ti3AlC2金属陶瓷综合性能最好

其硬度（HV）、抗弯强度、断裂韧度和电导率分别为1.7GPa、733MPa、9.3MPa·m1/2和1.37×106S·m-1。

Abstract

Cu-Ti3AlC2 cermets were prepared by powder metallurgical process.The composition and microstructure of the specimens were investigated by X-ray diffraction（XRD）and scanning electron microscope（SEM）.Meanwhile

effects of Ti3AlC2 content on the density

Vickers hardness

flexural strength

fracture toughness and electric conductivity of Cu-Ti3AlC2 cermets were investigated.The results show that with increasing in sintering temperature

peak position of Cu diffraction shifts to low angles as a result of Al solid solution.With increasing in Ti3AlC2 content

density and fracture toughness of the specimens are gradually decreased

and the Vickers hardness and electric conductivity are increased

while flexural strength exhibits firstly increase and then decrease.With 30% Ti3AlC2 content

the cermets exhibit desirable comprehensive properties

where Vickers hardness

flexural strength

fracture toughness and electric conductivity reach up to 1.7GPa