TY - JOUR
T1 - Interdiffusion of the aluminized and Pt-aluminized coatings on MAR-M247 superalloy
AU - Lin, Kwang Lung
AU - Hwang, Chung Mei
N1 - Funding Information:
The financial support as well as the assistance in the pack cementation experiment of the present work from the Aero Engine Factory of the Aero Industry Development Center are gratefully acknowledged. Appreciation is also owed to the Chung Shan Institute of Science and Technology for the supply of the cast superalloy sample.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1992/12/18
Y1 - 1992/12/18
N2 - Investigation have been performed into the interdiffusion behaviours of both aluminized and Pt-aluminized coatings on MAR-M247 superalloy. The interdiffusion leads to the formation of the NiAl phase for the aluminized coating, while the PtAl2 phase was identified in addition to the NiAl phase for the Pt-aluminized coating. On the basis of elemental analysis, with movement at different positions in the interdiffusion zone and location of the original interface, it was concluded that Ni diffuses outwards for the aluminized coating in the present study. For the case of the Pt-aluminized coating, Pt behaves as the diffusion media which enhances the outwards diffusion of Ni and the inward diffusion of Al to form the NiAl and PtAl2 phases. Co is the major alloying element which diffuses outwards and dissolves in the surface aluminide phases.
AB - Investigation have been performed into the interdiffusion behaviours of both aluminized and Pt-aluminized coatings on MAR-M247 superalloy. The interdiffusion leads to the formation of the NiAl phase for the aluminized coating, while the PtAl2 phase was identified in addition to the NiAl phase for the Pt-aluminized coating. On the basis of elemental analysis, with movement at different positions in the interdiffusion zone and location of the original interface, it was concluded that Ni diffuses outwards for the aluminized coating in the present study. For the case of the Pt-aluminized coating, Pt behaves as the diffusion media which enhances the outwards diffusion of Ni and the inward diffusion of Al to form the NiAl and PtAl2 phases. Co is the major alloying element which diffuses outwards and dissolves in the surface aluminide phases.
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U2 - 10.1016/0257-8972(92)90199-K
DO - 10.1016/0257-8972(92)90199-K
M3 - Article
AN - SCOPUS:0026994296
VL - 56
SP - 81
EP - 87
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 1
ER -