|
| Abstract No.: |
|
Scheduled at:
|
Thursday, September 29, 2011, Saal B2.1 9:50 AM
Modeling & Simulation 3
|
|
| Title: |
Application of structure based models of mechanical and thermal properties of plasma sprayed coatings
|
|
| Authors: |
Monika Vilemova* / Institute of Plasma Physics AS CR, v.v.i.
, Czech Republic
Jiri Matejicek / Institute of Plasma Physics AS CR, v.v.i., Czech Republic
Radek Musalek/ Institute of Plasma Physics AS CR, v.v.i., Czech Republic
|
|
| Abstract: |
Mechanical and thermal properties of thermally sprayed coatings, especially ceramics, are strongly influenced by cracks and pores that are present in the coating microstructure. In the recent past, there have been efforts to find an analytical model describing the coating properties based on the microstructural characteristics. Several analytical models were developed and published in the literature. The models use general microstructural characteristics, such as pore content, crack length, crack orientation, etc. as an input.
In this study, several major models available in the literature were applied to ceramic and metal coatings to describe their elastic modulus and thermal conductivity. Image analysis was carried out on SEM pictures to measure input values for the tested models. The sensitivity of the models to the variations in the microstructure and relevancy of their use in specific cases were studied. The results were compared with results obtained by FEM modeling and experimentally measured values.
|
|