PHASE DIAGRAM MODELLING: NICKEL - ALUMINUM - CHROMIUM SYSTEM

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Authors
  1. Jaansalu, K.M.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
The Ni-Al-Cr system is of importance to the gas turbine industry as it forms the basis for protective coating design and application for hot section components. These thermodynamic models establish a foundation upon which the metallurgical chemistry of aluminum coating processes for nickel base superalloys can be addressed. The thermodynamic model of the ternary system is based on the binary phase diagrams for each pair of components. Given the technological importance of this system, the robustness of the models developed for each of the binary systems will have a direct impact on the success of future engineering work. It is primarily for this reason that these binary systems are examined in detail. This technical memo reviews the thermodynamic concepts upon which phase diagram models are based and presents an effective model for each of the binary systems: Al-Cr, Al-Ni, and Ni-Cr.
Keywords
Intermetallic compounds;Thermodynamics;Phase stability
Report Number
DCIEM-98-TM-37 — Technical Memorandum
Date of publication
01 Apr 1998
Number of Pages
47
DSTKIM No
98-01441
CANDIS No
508210
Format(s):
Hardcopy;Document Image stored on Optical Disk

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