过渡金属碳化物和氮化物合金Zr_ xNb_{1-x} C和Zr_ xNb_{1-x} N的压缩性
On the compressibility of the transition-metal carbides and nitrides alloys Zr_xNb_{1-x}C and Zr_xNb_{1-x}N
摘要：
采用第一性原理全势线性缀加平面波方法，在局域密度近似下研究了岩盐结构中的4d过渡金属碳化物（ZrC，NbC）和氮化物（ZrN，NbN）及其三元合金。这些材料非常重要，因为它们具有有趣的机械和物理特性，这使它们适用于许多技术应用。在这里，通过使用一个简单的理论模型，我们估计的体积模量的三元合金Zr $_x$ Nb $_{1-x}$ C和Zr $_x$ Nb $_{1-x}$ N的体积模量的终端成员单独。计算结果与第一性原理计算的结果相当。
英文摘要：
The 4d-transition-metals carbides (ZrC, NbC) and nitrides (ZrN, NbN) in the rocksalt structure, as well as their ternary alloys, have been recently studied by means of a first-principles full potential linearized augmented plane waves method within the local density approximation. These materials are important because of their interesting mechanical and physical properties, which make them suitable for many technological applications. Here, by using a simple theoretical model, we estimate the bulk moduli of their ternary alloys Zr$_x$Nb$_{1-x}$C and Zr$_x$Nb$_{1-x}$N in terms of the bulk moduli of the end members alone. The results are comparable to those deduced from the first-principles calculations.
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