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Thermal Analysis of Halide Activator Used in Aluminizing of TiAl Intermetallics

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Abstract:

A detailed study of thermal analysis of ZrCl4 was carried out to investigate the influence of the halide salt type activator on the growth behavior of coating formed in vapor phase aluminizing process and subsequently to identify the most suitable condition. The equilibrium partial pressures of vapor species generated at the decomposition temperature of ZrCl4 were calculated by using a procedure based on minimization of the whole Gibbs energy with Factsage 6.2 using Fact 53 and SGsold thermodynamic databases. The results were discussed and compared with literatures. With the aid of thermodynamic analytical tools, chloride salt activator was analysed and the decomposition temperature with related enthalpy change was evaluated.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

473-476

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.473

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Online since:

November 2013

Authors:

Kamil Dychtoń*, Roman Przeliorz, Marek Goral, Jan Sieniawski

Keywords:

Activator, Thermo-Gravimetry (TG), Vapor Phase Aluminizing, Zirconium (IV) Chloride

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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