Braak, R. ; May, U. ; Onuseit, L. ; Repphun, G. ; Guenther, M. ; Schmid, Christoph ; Durst, Karsten (2018)
Accelerated thermal degradation of DLC-coatings via growth defects.
In: Surface and Coatings Technology, 349
doi: 10.1016/j.surfcoat.2018.05.063
Article
Abstract
Diamond-like carbons (DLC) are frequently used as wear protection coatings for tribologically loaded steel parts in the automotive industry. Diverse interlayer concepts are applied to increase the coatings adhesion which is otherwise poor on blank steel. Our focus lies on the influence of the adhesion layer design on the thermo-chemical stability of a H-containing DLC-coating and the significant role of growth defects.
At the interfaces between individual layers or in more elaborated transition zones, several stability issues might arise under certain conditions: E.g. a thermally driven, intrinsic aging can lower the adhesion strength. With sufficiently low adhesion, stress corrosion cracking along the interface can occur, leading to delamination progression at subcritical loads.
| Item Type: | Article |
|---|---|
| Erschienen: | 2018 |
| Creators: | Braak, R. ; May, U. ; Onuseit, L. ; Repphun, G. ; Guenther, M. ; Schmid, Christoph ; Durst, Karsten |
| Type of entry: | Bibliographie |
| Title: | Accelerated thermal degradation of DLC-coatings via growth defects |
| Language: | English |
| Date: | 2018 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Surface and Coatings Technology |
| Volume of the journal: | 349 |
| DOI: | 10.1016/j.surfcoat.2018.05.063 |
| Abstract: | Diamond-like carbons (DLC) are frequently used as wear protection coatings for tribologically loaded steel parts in the automotive industry. Diverse interlayer concepts are applied to increase the coatings adhesion which is otherwise poor on blank steel. Our focus lies on the influence of the adhesion layer design on the thermo-chemical stability of a H-containing DLC-coating and the significant role of growth defects. At the interfaces between individual layers or in more elaborated transition zones, several stability issues might arise under certain conditions: E.g. a thermally driven, intrinsic aging can lower the adhesion strength. With sufficiently low adhesion, stress corrosion cracking along the interface can occur, leading to delamination progression at subcritical loads. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy |
| Date Deposited: | 18 Jul 2018 14:06 |
| Last Modified: | 18 Jul 2018 14:06 |
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