کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602120 | 1005230 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermodynamic modeling of Ru–Zr and Hf–Ru systems Thermodynamic modeling of Ru–Zr and Hf–Ru systems](/preview/png/1602120.png)
In this paper, an assessment of the binary Ru–Zr and Hf–Ru systems is presented. The thermodynamic evaluation is based on diagrammatic investigations and high-temperature calorimetric measurements for the formation of the three intermediate compounds. The present work proposes thermodynamic modeling of the binaries calculated according to the CALPHAD method and carried out using the PARROT module in the Thermo-Calc software. The liquid phase and the solution phases (Ru)-HCP-A3, (αZr)-HCP-A3, (βZr)-BCC-A2, (αHf)-HCP-A3 and (βHf)-BCC-A2 are treated as substitutional solutions. The intermetallic Laves phase Ru2Zr-C14 is modeled with the sublattice formalism. The RuZr-B2 and HfRu-B2 phases are treated as ordered phases originating, respectively, from (βZr)-BCC-A2 and (βHf)-BCC-A2 disordered phases. Considering the relative uncertainty of experimental data due to high temperatures, a good agreement is obtained between calculated and experimental phase diagrams. The optimized set of coefficients and the calculated isothermal section are provided.
Journal: Intermetallics - Volume 15, Issue 12, December 2007, Pages 1632–1637