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不同含量Ti3AlC2/Cu复合材料在不同条件下的摩擦学性能
          
Tribological Properties of Different Content Ti3AlC2/Cu Composites under Different Conditions

摘    要
以不同温度(1 300,1 350,1 400℃)下无压烧结Ti3AlC2粉末以及铜粉末为原料,采用粉末冶金法制备Ti3AlC2/Cu复合材料,研究了不同Ti3AlC2含量(质量分数5%,10%,15%,20%)下复合材料在干摩擦条件以及蒸馏水和海水环境下的摩擦学性能。结果表明:无压烧结Ti3AlC2粉末的适宜温度为1 350℃,此时Ti3AlC2质量分数为96%;随着Ti3AlC2含量的增加,复合材料的相对密度降低,硬度先升后降,当Ti3AlC2的质量分数为15%时,硬度最高,约为120 HV;在干摩擦条件下,随着Ti3AlC2含量的增加,复合材料的摩擦因数和磨损率均显著降低;复合材料在蒸馏水和海水环境中的磨损率均低于干摩擦条件下,在蒸馏水环境中的摩擦因数高于干摩擦条件,而在海水环境中的摩擦因数低于在蒸馏水环境且略高于干摩擦条件下。
标    签 Ti3AlC2/Cu复合材料   蒸馏水环境   海水环境   干摩擦条件   摩擦学性能   Ti3AlC2/Cu composite   distilled water environment   seawater environment   tribological property  
 
Abstract
With Ti3AlC2 powder prepared by pressureless sintering at different temperatures (1 300,1 350,1 400℃) and copper powder as raw materials, Ti3AlC2/Cu composites were prepared by powder metallurgy. The tribological properties of composites with different content of Ti3AlC2 (mass fraction of 5%, 10%, 15%, 15%) under dry friction condition and in distilled water and seawater environments. The results show that the optimum pressureless sintering temperature of Ti3AlC2 powder was 1 350℃, and the mass fraction of Ti3AlC2 was 96%. With increasing Ti3AlC2 content, the relative density of the composite decreased, and the hardness increased first and then decreased, and reached the highest value (about 120 HV) when the mass fraction of Ti3AlC2 was 15%. Under dry friction condition, the friction coefficient and wear rate of the composite decreased significantly with increasing Ti3AlC2 content. The wear rates of composites in distilled water and seawater environments were lower than those under dry friction condition; the friction coefficient in distilled water environment was higher than that under dry friction condition, and in seawater environment was lower than that in distilled water environment and slightly higher than that under dry friction condition.

中图分类号 TB331   DOI 10.11973/jxgccl202311007

 
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所属栏目 材料性能及应用

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收稿日期 2022/8/15

修改稿日期 2023/8/16

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备注侯曌(1998-),男,陕西咸阳人,硕士研究生

引用该论文: HOU Zhao,JIA Junhong,HE Nairu. Tribological Properties of Different Content Ti3AlC2/Cu Composites under Different Conditions[J]. Materials for mechancial engineering, 2023, 47(11): 35~42
侯曌,贾均红,何乃如. 不同含量Ti3AlC2/Cu复合材料在不同条件下的摩擦学性能[J]. 机械工程材料, 2023, 47(11): 35~42


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