化学镀和粉末冶金法制备W/Cu梯度热沉材料（英文）  

Fabrication of W/Cu Graded Heat-sink Materials by Electroless Plating and Powder Metallurgy

作　　者：罗来马[1,2] 谭晓月 丁孝禹[1] 卢泽龙 罗广南[3] 昝翔 朱晓勇[1,2] 吴玉程[1,2] 

机构地区：[1]合肥工业大学,安徽合肥230009 [2]安徽省粉末冶金工程技术研究中心,安徽合肥230009 [3]中科院等离子体物理研究所,安徽合肥230031

出　　处：《稀有金属材料与工程》2016年第8期1983-1987,共5页Rare Metal Materials and Engineering

基　　金：National Magnetic Confinement Fusion Program with Grant(2014GB121001);Natural Science Foundation of Anhui Province(1408085QE83)

摘　　要：用化学镀法和粉末冶金的方法制备高致密的W/Cu梯度热沉材料。用场发射扫描电镜观察了材料的组织结构、界面和断口形貌。对材料的力学性能也进行了表征,如抗弯强度和显微硬度。结果表明材料每一层都很致密且组织结构均匀。截面上材料成分呈梯度分布,每层之间没有明显的界面。3层W/Cu梯度热沉材料的相对密度可达99.2%。散热层、过渡层和封接层的显微硬度HV分别是2000、2100和2400 MPa。抗弯实验结果显示封接层和散热层作为承重抗弯表面时的强度分别是428.5和480.7 MPa。The W/Cu graded heat-sink materials with high density were fabricated by electroless plating and powder metallurgy. The microstructure, interface and fracture of the graded heat-sink materials were observed using the field emission scanning electron microscope（FESEM）. The mechanical properties of the materials such as bending strength and hardness were determined. The results show that the structure of each layer is uniform and dense. The components of the cross-section present a graded distribution. There is no obvious interface among layers. The relative density of three-layer W/Cu graded heat-sink materials reaches 99.2%. The average values of microhardness HV of the radiating layer, the transitional layer and the sealing layer are 2000, 2100, 2400 MPa, respectively. It is indicated through the experimental results of bending strength that the bending strengths of the sealing layer and the radiating layer as the load-bearing surfaces are 428.5 and 480.7 MPa, respectively.

关 键 词：化学镀 粉末冶金 W/Cu梯度热沉材料 

分 类 号：TG146[一般工业技术—材料科学与工程]