পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| CALPHAD× | এক্সআরডি রিটভেল্ড পরিমার্জন× | |
|---|---|---|
| ক্ষেত্র | উপাদান বিজ্ঞান | উপাদান বিজ্ঞান |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1970 | 1969 |
| প্রবর্তক≠ | Larry Kaufman | Hugo Rietveld |
| ধরন≠ | Computational method | Refinement method |
| মৌলিক উৎস≠ | Kaufman, L., & Bernstein, H. (1970). Computer Calculation of Phase Diagrams. Academic Press. link ↗ | Rietveld, H. M. (1969). A profile refinement method for nuclear and magnetic structures. Journal of Applied Crystallography, 2(2), 65-71. DOI ↗ |
| অপর নাম | CALPHAD method, computational thermodynamics | Rietveld refinement, powder diffraction refinement |
| সম্পর্কিত | 3 | 3 |
| সারসংক্ষেপ≠ | CALPHAD (CALculation of PHAse Diagrams) is a computational method for predicting thermodynamic equilibrium properties and phase diagrams of multicomponent alloys. Pioneered by Larry Kaufman in 1970, CALPHAD combines experimental and computational data to assess thermodynamic properties of phases and subsequently predict equilibrium conditions. It is the standard methodology in physical metallurgy and materials design for alloy development, process optimization, and understanding phase stability. | XRD Rietveld Refinement is a method for extracting detailed crystal structure information from powder diffraction data by comparing observed and calculated diffraction patterns through least-squares refinement. Developed by Hugo Rietveld in 1969, this technique enables determination of atomic positions, occupancies, thermal parameters, and phase fractions directly from powder data without requiring single crystals. It is the standard approach in materials characterization for structural analysis, phase identification, and quantification. |
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