Q & A details -求碳化钨(WC)的热导率和热膨胀系数? 硬质合金中的WC
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求碳化钨(WC)的热导率和热膨胀系数? 硬质合金中的WC

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求碳化钨(WC)的热导率和热膨胀系数?
硬质合金中的WC

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  • 0861788249

    0861788249 2017-01-18 09:53:32

    纯的碳化钨的热传导性很好.含有钴的碳化钨的热传导率大约是铜的三分之一.其具体值与晶粒大小,钴的含量,当时的温度值等多种因素有关.如肯纳金属的K96在212F温度下热传导率为57.8Btu/hr.ft.F;而K92则为42.8.K96在842F温度下则又变为44.5.另外微量元素,如钛和钽的添加对热传导率也有显著的影响. 热膨胀系数也是一个变量.主要与钴的含量,以及当时的温度有关.如K96在常温到-320F温度区间为1.9×10^-6 in/in,而在常温到1200F区间为3.0×10^-6 in/in.

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