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21. 发明授权

US5525292A Process for producing aluminum sintering 失效
标题翻译：铝烧结工艺
公开(公告)号：US5525292A
公开(公告)日：1996-06-11
申请号：US502324
申请日：1995-07-13
申请人： Yasuhiro Nakao , Kunitoshi Sugaya , Shigehisa Seya , Takeshi Sakuma
发明人： Yasuhiro Nakao , Kunitoshi Sugaya , Shigehisa Seya , Takeshi Sakuma
IPC分类号： B22F3/10 , B22F3/00
CPC分类号： B22F3/101
摘要： A process is disclosed for producing an aluminum or an aluminum alloy sintering, comprising successive steps of maintaining a rare gas atmosphere inside a sintering furnace while heating a compact of aluminum particles or aluminum alloy particles, together with a magnesium source; reducing the pressure inside the sintering furnace while heating further for thereby sublimating magnesium nitrogen to generate Mg.sub.3 N.sub.2 and bringing the generated Mg.sub.3 N.sub.2 into contact with Al.sub.2 O.sub.3 in the surface of the compact for the reduction of Al.sub.2 O.sub.3, thereby effecting heating and sintering at a temperature lower than the melting point of aluminum. The process increases the bonding strength of the aluminum alloy particles while fully taking the advantage of a sintering process. Thus, it enables aluminum sinterings or aluminum-alloy sinterings improved in yield point, strength, and elongation.
摘要翻译：公开了一种用于生产铝或铝合金烧结的方法，包括在烧结炉内保持稀有气体气氛同时与镁源一起加热铝颗粒或铝合金颗粒的压块的连续步骤; 降低烧结炉内的压力，同时进一步加热，从而使镁氮升华以产生Mg 3 N 2，并使所产生的Mg 3 N 2与Al2O3的Al2O3的表面接触以还原Al 2 O 3，从而在低于铝的熔点。该工艺在充分利用烧结工艺的优点的同时增加了铝合金颗粒的粘结强度。因此，能够提高铝合金烧结体或铝合金烧结体的屈服点，强度和伸长率。

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