Invar（镍铁合金）、Kovar（镍铁钴合金）系列 合金的加工性能良好，具有较低的热膨胀系数，但电阻很大，导热性能很差，只 能作为小功率整流器的散热和连接材料。
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可伐合金废料首先用盐酸通氯溶解，使钴、镍、铁进入溶液而金不溶。
The kovar scrap is first dissolved with hydrochloric acid and chlorine.
本文通过焊接试验、显微分析和磨损试验论述了以铬、镍、铁基合金代替钴、铬、钨合金作石油钻头牙爪堆焊耐磨合金的问题。
In this article we discussed the possibility of replacement of cobalt alloy by Cr-Ni iron Base alloy in drill bit bearing on the basis of welding test, wearing test and microscopic examination.
在铁镍部分代钴的基础上，采用常规硬质合金工艺，以不同的混合稀土添加量进行了实验。
The conventional producing process of cemented carbide was applied on the basis of replacing cobalt partly with iron and nickel and the mixed rare earth of different content was added.
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