To understand the effect of grain refinement on the thermally grown alumina scale adhesion to the metal substrate, two delta-Ni2Al3 coatings, one coarse-grained (similar to 70 mu m) and the other ultrafine-grained (generally below similar to 500 nm), were prepared. The cyclic oxidation in air at 1100 degrees c shows that the ultrafine-grained (UFG) coating is better oxidation resistant than the coarse-grained (CG) coating due to the formation of a more adherent alumina scale. The latter is intrinsically correlated with the fact that the aluminide grain refinement helps to increase the oxide/metal strength through a route to prevent the formation of large-sized voids at the interface. (C) 2014 Elsevier Ltd. All rights reserved.
部门归属
[tan, x.
; peng, x.
; wang, f.] chinese acad sci, inst met res, lab corros & protect, shenyang 110016, peoples r china.
; peng, x (reprint author), chinese acad sci, inst met res, lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china.
; xpeng@imr.ac.cn
X. Tan,X. Peng,F. Wang. The effect of grain refinement on the adhesion of an alumina scale on an aluminide coating[J]. Corrosion Science,2014,85:280-286.
APA
X. Tan,X. Peng,&F. Wang.(2014).The effect of grain refinement on the adhesion of an alumina scale on an aluminide coating.Corrosion Science,85,280-286.
MLA
X. Tan,et al."The effect of grain refinement on the adhesion of an alumina scale on an aluminide coating".Corrosion Science 85(2014):280-286.
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