|
| Abstract No.: |
|
Scheduled at:
|
Thursday, May 22, 2014, Hall H1 2:20 PM
Novel Industrial Applications
|
|
| Title: |
Deposition of dense ceramic coatings by detonation spraying
|
|
| Authors: |
Alexandr Shtertser / Lavrentyev Institute of Hydrodynamics SB RAS, Russia
Vladimir Ulianitsky / Lavrentyev Institute of Hydrodynamics, Russia
Igor Batraev/ Lavrentyev Institute of Hydrodynamics, Russia
Igor Smurov*/ Université de Lyon, Ecole Nationale d'Ingénieurs de Saint-Etienne , France
|
|
| Abstract: |
Ceramic coatings deposited by diverse thermal spray techniques are used to increase wear and corrosion resistance, as insulation resistant layers and heat barriers and so on. Among the others methods such as flame spraying, plasma spraying, etc., the detonation spraying provides minimal porosity and excellent adhesion, cohesion, insulation and so on. In the present work deposition of ceramic coatings was studied with the help of detonation spray system CCDS2000. Influence of spraying conditions (explosive charge, fuel/oxygen ratio, stand-off distance, etc.) were studied to reach high insulation properties of alumina coatings. On the base of splat-analysis optimum spraying conditions were determined to reach low porosity (less than 1%) of coatings. «Bump» problem was solved for coating depositing on a large area and high uniformity alumina coatings with excellent electric strength of 35 kV/mm were sprayed. Mechanical properties and wear resistance of alumina coatings were measured as well and eventual applications are discussed. Chromia and yttria stabilized zirconia coatings deposited by CCDS2000 were analyzed in the same way.
|
|