粉末冶金技术2025，Vol.43Issue(1)：12-19,8.DOI:10.19591/j.cnki.cn11-1974/tf.2023050001
溶胶凝胶/氢还原工艺制备超细Cu-20W复合粉末及其烧结性能
Preparation and sintering behavior of ultrafine Cu-20W composite powders by sol-gel with hydrogen reduction technology
摘要
Abstract
Cu-20%W(mass fraction)ultrafine composite powders were prepared by the combination of sol-gel with hydrogen reduction method,using ammonium metatungstate and copper nitrate as the raw materials,and the Cu-20W samples were obtained by pressing and sintering.The morphology and particle size of the powders were characterized,and the effects of sintering temperatures on the microstructure and properties of the Cu-20W sintered samples were investigated.The results show that the Cu-20W composite powders are obtained by the combination of sol-gel with hydrogen reduction method with the average particle size of less than 100 nm.With the increase of sintering temperature,the physical and mechanical properties of the sintered Cu-20W samples are improved.The relative density of the samples sintered at 1080℃is 97.20%,the electrical conductivity(IACS),thermal conductivity,Vickers hardness,and tensile strength are reached as 91.73%,351.52 W·m-1·K-1,HV 96.1,and 431.03 MPa,respectively.In the temperature range of 100～400℃,the coefficient of thermal expansion for the sintered Cu-20W samples is 14.871×10-6～17.422×10-6·K-1.关键词
Cu-20W超细粉末/溶胶-凝胶法/烧结性能/物理性能/力学性能Key words
Cu-20W ultrafine powders/sol-gel process/sintering properties/physical properties/mechanical properties分类
金属材料引用本文复制引用
杨光,李革民,魏邦争,许荡,陈鹏起,程继贵..溶胶凝胶/氢还原工艺制备超细Cu-20W复合粉末及其烧结性能[J].粉末冶金技术,2025,43(1):12-19,8.基金项目
国家重点研发计划资助项目(2022YFE0109700) （2022YFE0109700）
国家自然科学基金资助项目(52274361) （52274361）
