Study on formation mechanism of YSZ thermal barrier coatings with segmented structure
Authors
Yi Wang, Shuo Sun, Min Liu, Hongli Suo
Corresponding Author
Yi Wang
Available Online October 2015.
- DOI
- 10.2991/icadme-15.2015.398How to use a DOI?
- Keywords
- Thermal barrier coatings (TBCs), Segmentation cracks, Formation mechanism, Tensile strength
- Abstract
Compared with traditional structures, YSZ TBCs with high segmentation crack density sprayed have exhibited a promising potential in improving TBC thermal shock resistance because the segmentation cracks increase its strain tolerance. A study is presented of formation mechanism of segmented TBC. The segmentation cracks initiate and propagate during the deposition phase, as a result of stress relaxation when the coating is subjected to tensile stress. Also, the crack density reaches a constant value and is not influenced by further plastic deformation of the metal. High heat input to the substrate is the most favorable factor in developing segmentation cracks because particle temperature promote the joining of adjacent lamellae.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Yi Wang AU - Shuo Sun AU - Min Liu AU - Hongli Suo PY - 2015/10 DA - 2015/10 TI - Study on formation mechanism of YSZ thermal barrier coatings with segmented structure BT - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering PB - Atlantis Press SP - 2127 EP - 2133 SN - 2352-5401 UR - https://doi.org/10.2991/icadme-15.2015.398 DO - 10.2991/icadme-15.2015.398 ID - Wang2015/10 ER -