Microstructural Characterization of Silicide Coatings on Mo and TZM Alloy

Abstract:

Characterization of microstructure of silicide coatings obtained during diffusion process of pack cementation type was showed in this article. The basic materials were pure Mo sheet and TZM molybdenum alloys as well. The coatings were deposited in out of pack process with three different times of exposure. The temperature of deposition process was constant. In first step the phases compositions of coatings was described by XRD analysis. In each cases the MoSi₂ phase was obtained on top surface of the coatings. The morphology of the coatings was very similar as well. All types of coatings were characterized by network of cracks on top surface of the coatings. There was no influence of depositions time on phases constituent and coatings topography. LM and SEM analysis revealed that internal coatings morphology was very similar in all cases. Basic differences was related to the thickness of coatings. All coatings were good quality without deep cracks. Microstructure was a columnar-like type without pores and voids.

• Periodical: Advanced Materials Research (Volume 1036)
• Pages: 164-167
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1036.164
• Online since: October 2014
• Authors: Grzegorz Moskal*, Lucjan Swadźba, Wacław Supernak, Marta Mikuśkiewicz, Adrian Mościcki, Magdalena Jabłońska, Dawid Niemiec, Piotr Kałamarz, Marek Staszewski, Adriana Wrona, Małgorzata Osadnik
• Keywords: Molybdenum, Silicide Coatings, TZM

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