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对Pd - 2 0W合金进行X射线衍射分析和差热分析 ,结果表明 :Pd - 2 0W合金是面心立方固溶体 ,合金的晶格点阵参数和晶粒大小随着温度的变化而变化 ,在温度缓慢下降至 75 0℃时出现了超结构转变。这表明在Pd - 2 0W合金中的K状态是一种超晶格结构。
The results of X - ray diffraction analysis and differential thermal analysis of Pd - 2 0W alloy show that Pd - 20W alloy is a face - centered cubic solid solution. The lattice lattice parameters and grain size of the alloy vary with the temperature. Superstructure transitions occurred when the temperature slowly dropped to 75 0 ° C. This indicates that the K state in the Pd - 20W alloy is a superlattice structure.