Thermal conductivity characterization of Ni60A/WC composites with different copper dilutions
Thermal conductivity characterization of Ni60A/WC composites with different copper dilutions
复制标题
不同铜稀释度的 Ni60A/WC 复合材料的热导率表征
DOI：
10.1016/j.matlet.2021.131546
复制
发表时间：
2022-03-15
影响因子：
3
通讯作者：
Lu, Xionggang
中科院分区：
文献类型：
--
作者：
Bai, Dan;Zhang, Chao;Lu, Xionggang
为了提高涂层传热分析的准确性，首次考虑了稀释率对涂层热物性参数的影响。采用熔炼法制备了不同铜含量的Ni 60 A/WC复合材料，模拟不同稀释比的Ni 60 A/WC涂层。系统地表征了复合材料在不同温度下的热导率。随着铜含量的增加和温度的升高，导热系数呈上升趋势。在600 ℃下，含铜量为30%的复合材料显示出26.8 W/（m.K）的较高热导率。通过非线性拟合，首次建立了导热系数与铜含量之间的四阶多项式函数关系。结果表明，可以近似预测不同铜稀释度下Ni 60 A/WC复合涂层的导热系数。
To improve the accuracy of heat transfer analysis of coating, the influence of the dilution ratio on the thermalphysical parameters of coating was considered for the first time. Ni60A/WC composites with different copper content were prepared by smelting to simulate the Ni60A/WC coatings with different dilution ratios. The thermal conductivity of composites at different temperatures was systematically characterized. As the increase of copper content and temperature, the thermal conductivity shows an upward trend. The composites with 30% copper content at 600 degrees C shows a higher thermal conductivity of 26.8 W/(m.K). A fourth-order polynomial function between thermal conductivity and copper content was created for the first time by non-linear fitting. As a result, the value of thermal conductivity of the Ni60A/WC composite coating with different copper dilutions can be approximately predicted.