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Titanium Coatings on AISI 316L Stainless Steel Formed by Thermal Decomposition of TiH2 in Vacuum

Published online by Cambridge University Press:  01 February 2011

Jorge López-Cuevas
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Ramos Arizpe, 25900 Coah., México
José L. Rodríguez-Galicia
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Ramos Arizpe, 25900 Coah., México
Juan C. Rendón-Angeles
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Ramos Arizpe, 25900 Coah., México
Martín I. Pech-Canul
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Ramos Arizpe, 25900 Coah., México
Juan Méndez-Nonell
Affiliation:
CINVESTAV-IPN Unidad Saltillo, Ramos Arizpe, 25900 Coah., México CIQA, Saltillo, 25253 Coah., México
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Abstract

Ti-coated AISI 316L stainless steel, for potential biomedical applications, is obtained by thermal decomposition of TiH2 under vacuum. The presence of hydrogen in the coating material facilitates the sintering process of Ti particles, with simultaneous formation of several inter-diffusion layers at the substrate/coating interface, whose thickness and chemical composition depend mainly on the treatment temperature. Coatings prepared at 1100°C exhibit formation of a wide zone at the substrate/coating interface, which is associated with the appearance of cracks, and which consists of a mixture of λ + χ + α-Fe phases. Formation of abundant microporosity is also observed in this region, which is attributed to the Kinkerdall effect.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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Titanium Coatings on AISI 316L Stainless Steel Formed by Thermal Decomposition of TiH2 in Vacuum
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Titanium Coatings on AISI 316L Stainless Steel Formed by Thermal Decomposition of TiH2 in Vacuum
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