(1. 中國工程物理研究院, 綿陽 621900;
2. 中國核動力研究院， 成都 610041)
摘 要: 研究了火花等離子燒結(jié)工藝與YG10、 YG12兩種納米硬質(zhì)合金性能的關(guān)系。 然后采用火花等離子燒結(jié)技術(shù)制備了硬質(zhì)合金功能梯度材料，該材料由納米WC/10%Co、納米WC/12%Co、微米 WC/15%Co 混合粉以及不銹鋼圓片燒結(jié)而成。顯微硬度壓痕顯示該材料各層間的應(yīng)力較小。
關(guān)鍵字: 火花等離子燒結(jié)； WC/Co硬質(zhì)合金； 功能梯度材料
HE Wen-yan1, LEI Dai-fu1, REN Da-peng1
（1. Chinese Academy of Engineering and Physics, Mianyang 621900, China;
2. Nuclear Power Institute of China, Chengdu 610041, China）
Abstract:The density, hardness and fracture toughness of YG10, YG12 nano hardmetals prepared by different spark plasma sintering processes were measured. A functionally graded material(FGM) was also produced by spark plasma sintering technology(SPS), and sintering powders of nano WC/10%Co, nano WC/12%Co, micro WC/15%Co and disk of stainless steel. The SPS processing led to FGM free of internal stress, which was measured using Vickers indentations.
Key words: spark plasma sintering; WC/Co hardmetal; functionally graded materials
