The effect of coating grain size on the selective oxidation behavior of Ni-Cr-Al alloy

Journal Article · Sat Nov 15 04:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00291-1· OSTI ID:554059

Liu, Z; Gao, W; Dahm, K ^[1]; Wang, F ^[2]

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1. Univ. of Auckland (New Zealand). Dept. of Chemical and Materials Engineering
2. Academia Sinica, Shenyang (China). Inst. of Corrosion and Protection of Metals

Arnell showed that the grain size of sputter-deposited Cu coatings decrease with the decreasing deposition rate following a linear relation. Therefore, different deposition parameters may produce coatings with different grain size. In the present program, the authors used the unbalanced magnetron sputtering technique to produce a series Ni-Cr-Al alloy coatings on Ni-Cr-Al substrates. The general compositions of the alloys are Ni-20Cr-XAl where X = 1,2,3, and 5 (weight percent). During deposition, the Ar pressure was varied in order to control the deposition rates. The present report is concentrated on the effect of coating grain size on the oxidation behavior of 78Ni-20Cr-2Al.

• OSTI ID: 554059
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 10 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CORROSION PROTECTION
GRAIN SIZE
NICKEL BASE ALLOYS
OXIDATION
PROTECTIVE COATINGS
SPUTTERING