کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1660005 | 1517691 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Interfacial fracture toughness of transition metal nitrides Interfacial fracture toughness of transition metal nitrides](/preview/png/1660005.png)
Interfacial fracture toughness is one of the key parameters in assessing and controlling the quality and performance of multiple-layer hard protective coatings. This paper reports on a study of interfacial fracture toughness of transition metal nitrides using ab initio density functional theory (DFT) calculations. Five transition metal nitrides, TiN, CrN, ZrN, VN and HfN, were selected for this study. The interfaces between these nitrides were constructed, and the ideal work of adhesion Wad and Young's modulus E along (100) and (110) orientations for these nitrides were calculated. On the basis of calculated Wad and E, the interfacial fracture toughness KIC was evaluated. The trends of interfacial fracture toughness were analyzed for two specific orientations (100) and (110). It is proposed that interfacial fracture toughness may be used as guidance for the development of multi-layer coatings for either wear or erosion protection.
Journal: Surface and Coatings Technology - Volume 203, Issues 5–7, 25 December 2008, Pages 598–601