TY - JOUR
T1 - Development of Pt-base two layered coating for oxidation protection
AU - Matsumura, Yoshitaka
AU - Murakami, Hideyuki
AU - Kasai, Kazuki
AU - Murakami, Hiromichi
AU - Noda, Kazuhiko
PY - 2012/5
Y1 - 2012/5
N2 - Oxidation resistance and microstructural changes of Pt/Ni + Al two layered coatings were investigated in comparison to those of Pt diffusion coatings. The two layered coatings were successfully prepared by a two-step electroplating process, which involves Pt electroplating followed by Ni + Al-particle composite electroplating. The cross-sectional observations of specimens after the cyclic oxidation test confirmed that the two-layered coatings retarded the formation of voids, suggesting that the top Ni + Al-particle composite layer played a role as the diffusion retarder between the coated layer and the substrate. In addition, the Ni + Al-particle composite coatings preferentially accelerated the formation of the Al2O3 scale on the surface. These results confirmed the beneficial effect of the designed two layered coatings.
AB - Oxidation resistance and microstructural changes of Pt/Ni + Al two layered coatings were investigated in comparison to those of Pt diffusion coatings. The two layered coatings were successfully prepared by a two-step electroplating process, which involves Pt electroplating followed by Ni + Al-particle composite electroplating. The cross-sectional observations of specimens after the cyclic oxidation test confirmed that the two-layered coatings retarded the formation of voids, suggesting that the top Ni + Al-particle composite layer played a role as the diffusion retarder between the coated layer and the substrate. In addition, the Ni + Al-particle composite coatings preferentially accelerated the formation of the Al2O3 scale on the surface. These results confirmed the beneficial effect of the designed two layered coatings.
KW - Nickel + aluminum-particle composite coatings
KW - Nickel-based superalloy
KW - Oxidation microstructural change
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U2 - 10.2320/jinstmet.76.321
DO - 10.2320/jinstmet.76.321
M3 - Article
AN - SCOPUS:84863609778
SN - 0021-4876
VL - 76
SP - 321
EP - 326
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 5
ER -