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

被引：35

作者：

Kayani, A. ^{[1
]}

Buchanan, T. L.

Kopczyk, M.

Collins, C.

Lucas, J.

Lund, K.

Hutchison, R.

Gannon, P. E.

Deibert, M. C.

Smith, R. J.

Choi, D. -S.

Gorokhovsky, V. I.

机构：

[1] Montana State Univ, Bozeman, MT 59717 USA

[2] Arcomac Surface Engn LLC, Bozeman, MT 59715 USA

来源：

SURFACE & COATINGS TECHNOLOGY | 2006年 / 201卷 / 07期

关键词：

CrAlN; SOFC interconnect; coatings; ion beam analysis; corrosion resistance;

D O I：

10.1016/j.surfcoat.2006.08.049

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 degrees C. The composition of the coated plates and the rate of oxidation were characterized using Rutherford backscattering (RIBS) 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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：4460 / 4466

页数：7

共 17 条

[1] High-temperature oxidation resistance of Cr1-xAlxN thin films deposited by reactive magnetron sputtering [J].