粉末冶金技术2025，Vol.43Issue(5)：577-584,8.DOI:10.19591/j.cnki.cn11-1974/tf.2024050002
镀铬金刚石/铜复合材料的制备及性能
Preparation and properties of chrome-plated diamond/copper composites
张妍 1徐燕军 2刘一波 2黄霞 2韩欢庆3
作者信息
- 1. 钢铁研究总院有限公司,北京 100081||安泰科技股份有限公司,北京 100081||北京安泰钢研超硬材料制品有限责任公司,北京 102200
- 2. 安泰科技股份有限公司,北京 100081||北京安泰钢研超硬材料制品有限责任公司,北京 102200
- 3. 安泰科技股份有限公司,北京 100081
- 折叠
摘要
Abstract
To prepare the diamond/copper composite materials with good thermal and physical properties,the surface of diamond particles was modified by chromium plating,and the composites were prepared by vacuum hot pressed sintering(VHP).The microstructure and fracture morphology of the diamond/copper composites were analyzed,the bending performance,thermal conductivity,and thermal expansion coefficient of the composites were tested,and the optimum process parameters of the composites prepared by VHP were studied.The results show that the chromium plating on the diamond surface can improve the interface bonding of the composites.The flexural strength of the composites increases with the increase of sintering temperature,and the flexural strength of the composites prepared at 1100 ℃ reaches 278 MPa;when the other conditions are the same,the thermal conductivity of the composites is 417 W·m-1·K-1,while the thermal conductivity of the composites without chromium plating is only 127 W·m-1·K-1.As the sintering temperature increases,the thermal conductivity of the composites increases.When the sintering temperature is 1050 ℃ and the pressure is 20 MPa,the thermal conductivity of the chrome-plated diamond/copper composite can reach 574 W·m-1·K-1.Within the temperature range of 25 to 300 ℃,the thermal expansion coefficient is between(4.90～8.50)×10-6 K-1,and the composite materials exhibit the excellent low thermal expansion properties with the increase of test temperature.关键词
金刚石/铜复合材料/真空热压烧结/金刚石表面改性/热力学性能Key words
diamond/copper composites/vacuum hot pressed sintering/diamond surface modification/thermal properties分类
通用工业技术引用本文复制引用
张妍,徐燕军,刘一波,黄霞,韩欢庆..镀铬金刚石/铜复合材料的制备及性能[J].粉末冶金技术,2025,43(5):577-584,8.
