Title: The Effect of Cr- and Y-Implantation on the Oxidation Behaviour of PM Ni3Al.
Citation: Materials Science and Technology vol. 15 p. 345-351
Publication Year: 1999
JRC N°: JRC16080
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC16080
Type: Articles in periodicals and books
Abstract: The effect of Cr- and Y-implantation on the isothermal and cyclic oxidation behaviour in air of a boron-doped Ni3 Al alloy at 585 and 900*C for up to 200 h is discussed. Y-implantation proved to be detrimental, causing slightly higher oxidation rates at both temperatures, while the scale formed at 900*C on Y-implanted Ni3 Al was prone to spallation. A similar `scale pattern was observed for the non-implanted material, however, the oxide scale formed on the non-implanted material did not show any significant susceptibility for scale cracking and spallation. Cr-implantation on the other hand was beneficial in that it decreased the oxidation rates at both temperatures due to the formation of a continuous healing aluminia layer, induced by the presence of chromium. No spallation of the oxide scale occurred, even after 200 cycles, at 900*C .
JRC Directorate:Joint Research Centre Historical Collection

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