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首页> 外文会议>Euro PM2008 congress amp; exhibition proceedings >Influence of Sintering Temperature on the FinalProperties of W-Cu-Ni Composites
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Influence of Sintering Temperature on the FinalProperties of W-Cu-Ni Composites

机译：烧结温度对W-Cu-Ni复合材料最终性能的影响

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摘要

It is presented a study about the effects of the sintering atmosphere (vacuum,rnhydrogen) on the final resulted properties of the electric contacts with W-Cu-Ni chemicalrncomposition. The use of alloys containing an amount of tungsten (over 65%) has increasedrnduring last years because of their unique combination of properties. These properties are arnresult of the chemical composition of the alloy on one hand, and a specific microstructurernobtained during liquid phase sintering on the other hand. As a result it was compulsory tornstudy the parameters that influence the densification process and the sintered properties,rndepending on the sintering temperature and the copper-infiltrating atmosphere. Therefore, itrnhas been studied the influence of these parameters on the density, hardness andrnmicrostructures changes for the composites with 78%W-2%Ni-20%Cu, (% wt). The betterrnresults were obtained for the value of 1350 ~0C for the copper infiltration temperature, for bothrnsintered atmosphere.
机译：提出了有关烧结气氛（真空，氢）对钨-铜-镍化学成分电触点最终最终性能的影响的研究。近年来，由于其独特的性能组合，含钨量超过65％的合金的使用有所增加。这些性质一方面是合金的化学组​​成的结果，另一方面是在液相烧结过程中获得的特定的微观结构。结果，必须根据烧结温度和渗铜气氛来研究影响致密化过程和烧结性能的参数。因此，已经研究了这些参数对具有78％W-2％Ni-20％Cu（％wt）的复合材料的密度，硬度和显微组织变化的影响。在两种烧结气氛下，铜的渗透温度为1350〜0C时，可获得更好的结果。

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