Autor:	P. K. Datta, H.L. Du, S. R. Rose, X. Y. Li, Z. D. Xiang
Rok vydání:	2003
Předmět:	Materials science Mechanical Engineering Diffusion High-temperature corrosion Alloy Metallurgy Intermetallic Substrate (electronics) engineering.material Condensed Matter Physics Ion Ion implantation Coating Chemical engineering Mechanics of Materials engineering General Materials Science
Zdroj:	Materialwissenschaft und Werkstofftechnik. 34:421-426
ISSN:	1521-4052 0933-5137
DOI:	10.1002/mawe.200390087
Popis:	The oxidation/sulphidation behaviour of a Ti-46.7Al-1.9W-0.5Si alloy with a TiAl 3 diffusion coating was studied in an environment of H 2 /H 2 S/H 2 O at 850°C. The kinetic results demonstrate that the TiAl 3 coating significantly increased the high temperature corrosion resistance of Ti-46.7Al-1.9W-0.5Si. The SEM, EDX, XRD and TEM analysis reveals that the formation of an Al 2 O 3 scale on the surface of the TiAl 3 -coated sample was responsible for the enhancement of the corroison resistance. The Ti-46.7Al-1.9W-0.5Si alloy was also modified by Nb ion implantation. The Nb ion implanted and as received sampels were subjected to cyclic oxidation in an open air at 800°C. The Nb ion implantation not only increased the oxidation resistance but also substantially improved the adhesion of scale to the substrate.
Databáze:	OpenAIRE
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