Abstract
A thermodynamic description for the Mo-Si-B system has been developed on the basis of the constituent binaries and critically reviewed ternary experimental data. The published thermodynamic descriptions for the Mo-Si and B-Si binaries were directly used and that for the Mo-B binary was modified in the present study. A two-sublattice model, (Mo)0.625(B. Si, Va) 0.375, was applied to the T2 phase considering its crystal structure and homogeneity range. This model not only can describe the B substitution with Si along B/Si direction but also can accommodate the temperature dependence of the Mo content in T2. The phase stability, the liquidus projection and the solidification paths were calculated accordingly based on the currently obtained thermodynamic description and compared with the experimental results.
| Original language | English |
|---|---|
| Pages (from-to) | 121-128 |
| Number of pages | 8 |
| Journal | Intermetallics |
| Volume | 13 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2005 |
| Externally published | Yes |
Funding
The authors would like to dedicate this paper to Prof. Adolf Mikula of the Institute of Inorganic Chemistry, University of Vienna, Austria on the occasion of his 60th birthday and to thank Doug Berczik and James Myers of Pratt-Whitney for their interests in this work and Dr R. Sakidja for very constructive discussions. This research was supported by the REVOLUTIONARY HIGH PRESSURE TURBINE BLADE MATERIAL program of AFRL/ML (contract No. F33615-98-C-2874).
| Funders | Funder number |
|---|---|
| AFRL/ML | F33615-98-C-2874 |
Keywords
- A. Intermetallics, miscellaneous
- A. Silicides, various
- B. Phase diagrams
- B. Thermodynamic and thermochemical properties
- E. Phase diagram, prediction