|
| Abstract No.: |
|
Scheduled at:
|
Wednesday, May 21, 2014, Hall H1 & H2 3:00 PM
Automotive Industry 1
|
|
| Title: |
Performance testing of suspension plasma sprayed thermal barrier coatings with different suspension parameters
|
|
| Authors: |
Nicholas Curry* / University West Production Technology Centre, Sweden
Kent VanEvery/ Progressive Surface, USA
Johann Susnjar/ Treibacher Industrie AG, Austria
|
|
| Abstract: |
Suspension plasma spraying has become an emerging technology for the production of thermal barrier coatings for the gas turbine industry. Presently though commercial systems for coating production are available, coatings remain in the development stage. Suitable suspension parameters for coating production remain an outstanding question.
For this study, a number of suspensions were produced by different production routes with varied solid loadings and powder size distributions. Suspensions were sprayed onto superalloy substrates coated with HVAF sprayed bond coats. Suspension parameters were tailored to generate columnar structures. Testing of the produced TBC systems has included thermal cyclic fatigue testing, thermal shock testing and thermal conductivity analysis. Pore size distribution has been characterized by mercury porosimetry. Results suggest suspension plasma sprayed TBCs have a performance advantage over traditional plasma spray coatings.
|
|