| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5464785 | Surface and Coatings Technology | 2017 | 7 Pages |
Abstract
After oxidation at 800 °C for 1000 h, both the Cr2N and (Cr,W)2N coatings had bilayer scales comprising Cr2O3 and (Mn,Cr)3O4. The Cr2N and (Cr,W)2N coatings exhibited similar oxidation curves and a two stages of oxidation mechanism. The main reason for the occurrence of the dominant oxidation mechanism transfer is the growth of Cr2O3 and (Mn,Cr) 3O4 spinel. Moreover, the doping of W benefited the formation of a Ï phase to precipitate at the oxide/coating interface, which acted as a diffusion barrier retarding the reaction rate between Cr and O.
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Authors
Sheng-Min Yang, Yung-Ting Huang, Yin-Yu Chang, Yeong-Tsuen Pan, Dong-Yih Lin,