功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
z2期
81-83,88
,共4页
WC-Ni硬质合金%粘结相%Fe 粉%抑制晶粒生长%力学性能
WC-Ni硬質閤金%粘結相%Fe 粉%抑製晶粒生長%力學性能
WC-Ni경질합금%점결상%Fe 분%억제정립생장%역학성능
WC-Ni cemented carbide%binder%Fe powder%inhibition of the growth of grain%mechanics properties
为了提高 WC-Ni 硬质合金的力学性能,对其粘结相成分优化做了研究。保持粘结相总量不变,通过添加少量的Fe 粉来代替等质量的 Ni 粉,研究烧结体微观结构和力学性能随 Fe 粉添加量增加而变化的情况。研究发现,WC-Ni 基硬质合金中加入少量的Fe粉即可起到明显的晶粒抑制作用；随着 Fe 添加量的增加,烧结体的强度呈现先上升后下降的趋势,而硬度则呈现一直上升的趋势；WC-7％Ni-1％Fe硬质合金的力学性能可达到 Cr或Mo 掺杂的 WC-Ni 硬质合金的水平。
為瞭提高 WC-Ni 硬質閤金的力學性能,對其粘結相成分優化做瞭研究。保持粘結相總量不變,通過添加少量的Fe 粉來代替等質量的 Ni 粉,研究燒結體微觀結構和力學性能隨 Fe 粉添加量增加而變化的情況。研究髮現,WC-Ni 基硬質閤金中加入少量的Fe粉即可起到明顯的晶粒抑製作用；隨著 Fe 添加量的增加,燒結體的彊度呈現先上升後下降的趨勢,而硬度則呈現一直上升的趨勢；WC-7％Ni-1％Fe硬質閤金的力學性能可達到 Cr或Mo 摻雜的 WC-Ni 硬質閤金的水平。
위료제고 WC-Ni 경질합금적역학성능,대기점결상성분우화주료연구。보지점결상총량불변,통과첨가소량적Fe 분래대체등질량적 Ni 분,연구소결체미관결구화역학성능수 Fe 분첨가량증가이변화적정황。연구발현,WC-Ni 기경질합금중가입소량적Fe분즉가기도명현적정립억제작용；수착 Fe 첨가량적증가,소결체적강도정현선상승후하강적추세,이경도칙정현일직상승적추세；WC-7％Ni-1％Fe경질합금적역학성능가체도 Cr혹Mo 참잡적 WC-Ni 경질합금적수평。
Optimization of binder’s composition for WC-Ni cemented carbide was studied to improve its mechan-ics properties.With constant content of binder,some Ni powder was replaced by equal quantitative Fe powder. The microstructure and mechanics properties of cemented carbide with different binder were studied.The re-sults indicated that the growth of WC grain was inhibitted by a small addition of Fe powder.The bending strength of sintered body increased firstly and then descended,and the hardness descended with the increment of Fe powder.Mechanics properties of WC-7%Ni-1%Fe were as good as WC-Ni cemented carbide doped with Cr or Mo.
