Cr-Fe粒度对铜基粉末冶金材料摩擦磨损性能的影响
Effects of Cr-Fe Particle Size on Friction and Wear Properties of Copper-based Powder Metallurgy Materials
徐琴 1张驰 2樊江磊 3刘建秀3
作者信息
- 1. 河南工业大学机电工程学院,郑州 450001
- 2. 河南工业大学机电工程学院,郑州 450001;河南机电职业学院轨道交通学院,郑州 450001
- 3. 郑州轻工业大学机电工程学院,郑州 450001
- 折叠
摘要
采用粉末冶金热压烧结工艺制备了不同Cr-Fe粒度的铜基粉末冶金材料,进行了不同制动转速下的摩擦磨损测试,获得了Cr-Fe粒度对铜基粉末冶金材料的微观组织特征、相对密度、力学性能以及摩擦性能的影响.结果表明,不同粒度下,Cr-Fe颗粒都均匀分布在基体材料中;随着Cr-Fe粒度增加,铜基粉末冶金摩擦材料的基体组织连续性逐渐变差,硬度、烧结后的相对密度均先增加后降低,摩擦因数先增加后降低.随着制动速度提升,材料的摩擦因数均逐渐降低,磨损量逐渐增大;当Cr-Fe粒度为100目时,铜基粉末冶金材料的摩擦磨损性能最好.
Abstract
Copper-based powder metallurgy materials with different Cr-Fe particle sizes was fabricated by powder met-allurgy hot pressing sintering process,and friction and wear tests at different brake speeds were carried out.The influ-ence of Cr-Fe particle size on microstructure,relative density,mechanical properties and friction properties of the alloy was investigated.The results indicate that Cr-Fe particles are uniformly distributed in the matrix under different par-ticle sizes.With the increase of Cr-Fe particle size,the structure continuity of copper-based powder metallurgy friction materials becomes worse.The hardness and sintered relative density are increased at first and then decreased,and the friction coefficient is firstly increased and then decreased.With the increase of braking speed,the friction coefficients are gradually reduced,and the wear rate is gradually increased.The friction and wear properties of copper-based pow-der metallurgy materials are desirable with the Cr-Fe particle size of 100 mesh.
关键词
摩擦材料/粉末冶金/铜基体/摩擦磨损Key words
Friction Materials/Powder Metallurgy/Cu Matrix/Friction and Wear引用本文复制引用
基金项目
国家自然科学基金(52001114)
河南省高等学校科技创新人才支持计划(23HASTIT022)
河南省高等学校青年骨干教师培育计划(2021GGJS064)
河南省高等学校重点科研项目(21A430010)
出版年
2024
NETL
NSTL
万方数据