不同含量Ti<sub>3</sub>AlC<sub>2</sub>/Cu复合材料在不同条件下的摩擦学性能

侯曌; 贾均红; 何乃如

doi:10.11973/jxgccl202311007

不同含量Ti₃AlC₂/Cu复合材料在不同条件下的摩擦学性能

陕西科技大学机电工程学院, 西安 710021

详细信息

作者简介:
侯曌(1998-),男,陕西咸阳人,硕士研究生

通讯作者:
何乃如副教授

中图分类号: TB331
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出版历程
- 收稿日期: 2022-08-14
- 修回日期: 2023-08-15
- 刊出日期: 2023-11-19

Tribological Properties of Different Content Ti₃AlC₂/Cu Composites under Different Conditions

School of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China

摘要

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。
- 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
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.
- Ti₃AlC₂/Cu composite /
- distilled water environment /
- seawater environment /
- tribological property

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