Phase Transitions in Intermetallic Compounds under Pressure: Synthesis of Tungsten Germanides
As is known, tungsten germanides do not exist at ordinary conditions, and the equilibrium phase diagram of W — Ge probably has a simple eutectic form. In the ternary Compounds (Mo,W)3Ge, (Mo,W)5Ge3 and (Mo,W)2Ge the solubility of tungsten is 10 to 20 at.%; in W5(Si,Ge)3 and in W(Si,Ge)2 the solubility of germanium is 5 to 15 at.% [1,2]. Thus, tungsten germanides are not stable at atmospheric pressure. One can assume that high pressures may be favorable for the formation of these types of Compounds because their synthesis is accompanied by large decreases in specific volume.
KeywordsTernary Compound Equilibrium Phase Diagram Density Evaluation Powdered Tungsten High Pressure Chamber
- 3.L. F. Vereschagin, L. G. Chvostansev and A. P. Novikov, United Kingdom Patent No. 1, 342, 369 (1971).Google Scholar