粉末冶金技术2024，Vol.42Issue(3)：283-289,7.DOI:10.19591/j.cnki.cn11-1974/tf.2022020002
W-Cu梯度复合材料的制备、组织与性能
Fabrication,microstructure,and properties of W-Cu graded composites
摘要
Abstract
The three-layer W-Cu graded composites were prepared by powders mixing and spark plasma sintering,using W and Cu powders in different proportions as the raw materials.The microstructure,interface characteristics,physical properties,mechanical properties,and thermal shock resistance of the W-Cu graded composites at different sintering temperatures were investigated.The results show that,the W-Cu graded composites sintered at 900 ℃ have the high relative density(95％)and retain the original design composition of single layer.The distribution of W and Cu in each graded layer is uniform,and the interface between W and Cu is well combined without diffusion.The mechanical properties of the W-Cu graded composites show the gradient distribution,and the microhardness of the W-40Cu layer is up to HV 136.The fracture is firstly present at the W-40Cu layer in the compression process,and the highest compressive yield strength is 378 MPa.The thermal conductivity of the W-Cu graded composite sintered at 900 ℃ is 202 W·m-1·K-1.After the thermal shock resistance test,the W-Cu gradient composites show the good thermal shock resistance performance without no crack at the interface.关键词
梯度复合材料/放电等离子烧结/微观组织/界面特征/力学性能Key words
graded composites/spark plasma sintering/microstructure/interface characteristics/mechanical properties分类
矿业与冶金引用本文复制引用
冯晓伟,司岸恒,冯波,李达人..W-Cu梯度复合材料的制备、组织与性能[J].粉末冶金技术,2024,42(3):283-289,7.基金项目
广东省科学院青年人才专项(2023GDASONRC-0321、2023GDASONRC-0210) （2023GDASONRC-0321、2023GDASONRC-0210）
广东省基础与应用基础重大项目(2020B0301030006) （2020B0301030006）
广东省科学院建设国内一流研究机构行动专项资金项目(2020GDASYL-20200101001、2024GDASZH-2024010102、2020GDASYL-20200503001-04). （2020GDASYL-20200101001、2024GDASZH-2024010102、2020GDASYL-20200503001-04）
