摘要
研究了石墨含量对Ｃｕ基滑板烧结膨胀的影响与作用机理，石墨的体积百分数依次为０、７．１％、１２％、１３．５％、１６．６％，其对应的体膨胀率依次为－６．４％、４．６％、１６％、２１％、３２％。膨胀机制是石墨阻碍金属颗粒形成烧结颈，使烧结初期因释放应变能和排放成型剂而引起的膨胀得以保留。
The influences of graphite content on the sintering expansion of copper base alloy and its expanding mechanism were investigated. The graphite contents were 0, 7.1%, 12%, 13.5% and 16.6% in volume fraction respectively, with the corresponding volume expanding ratios to be -6.4%, 4.6%, 16%, 21% and 32%. The sintering expandingmechanism is that the graphite powders separate the metal powders and thus hinder the formation of neck during sintering, which makes the sintering expansion due to the releasing of strain energy and the burning off of binder in the early stage of the sintering process be reserved till the end of sintering, and the sintering expanding ratio is linear with the graphite content.
出处
《中国有色金属学报》
EI
CAS
CSCD
1996年第3期106-110,共5页
The Chinese Journal of Nonferrous Metals
关键词
烧结
粉末冶金
石墨
材料
铜基合金
滑板
膨胀
sintering copper base powder metallurgy copper graphite material sintering model
