Oxidation resistance of magnetron-sputtered CrAlN coatings on 430 steel at 800 °C

Kayani, Asghar N.; Buchanan, T. L.; Kopczyk, M.; Collins, C.; Lucas, Jake A.; Lund, K.; Hutchison, R.; Gannon, Paul E.; Deibert, Max C.; Smith, Richard J.; Choi, D. S.; Gorokhovsky, Vladimir I.

doi:10.1016/j.surfcoat.2006.08.049

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Oxidation resistance of magnetron-sputtered CrAlN coatings on 430 steel at 800 °C

Kayani, Asghar N.;
Buchanan, T. L.;
Kopczyk, M.;
Collins, C.;
Lucas, Jake A.;
외 7명

Citations

SCOPUS

42

초록

The requirements of low cost and high-temperature corrosion resistance for bipolar interconnect plates in solid oxide fuel cell stacks have directed attention to the use of metal plates with oxidation resistant coatings. We have investigated the performance of steel plates with homogenous coatings of CrAlN. The coatings were deposited using RF magnetron sputtering, with Ar as a sputtering gas and N gas added during the growth process. The Cr/Al composition ratio in the coatings was varied in a combinatorial approach. The coatings were subsequently annealed in air for up to 25 h at 800 °C. The composition of the coated plates and the rate of oxidation were characterized using Rutherford backscattering (RBS) and non-Rutherford backscattering analysis. From our results, we conclude that Al rich coatings are more susceptible to oxidation than Cr rich coatings and Cr/Al ratio of 0.9 offers the best resistant to oxidation. © 2006 Elsevier B.V. All rights reserved.

키워드

Coatings; Corrosion resistance; CrAlN; Ion beam analysis; SOFC interconnect

제목: Oxidation resistance of magnetron-sputtered CrAlN coatings on 430 steel at 800 °C

저자: Kayani, Asghar N.; Buchanan, T. L.; Kopczyk, M.; Collins, C.; Lucas, Jake A.; Lund, K.; Hutchison, R.; Gannon, Paul E.; Deibert, Max C.; Smith, Richard J.; Choi, D. S.; Gorokhovsky, Vladimir I.

DOI: 10.1016/j.surfcoat.2006.08.049

발행일: 2006

유형: Article

저널명: Surface and Coatings Technology

권: 201

호: 7 SPEC. ISS.

페이지: 4460 ~ 4466