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Development of Abradable Flame Spray Coating Technology
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English
Abstract
The authors, et al. have succeeded in the practical application of the abradable flame spray coating, used in aircraft engines for the prevention of air leakage and the improvement of efficiency, to automobile turbochargers for the first time in the world.
Two layers consisting of a bond coated layer and an abradable layer used to be coated by separate spray nozzles under the conventional technique.
In this paper, equations of relations between various flame spray coating conditions and the quality of coated film, which were derived from measured results, will be described. Flame spray coating conditions, that allow the double layer coating by the same spray nozzle, have been determined for each layer. Temperatures and speeds of the flame were measured by means of two-color type high-speed cameras, and equations of their relations with the flame spray coating conditions are derived from the measured result. Melting conditions of spray powders were also considered based on the foregoing, and the validity of flame spray coating conditions determined under this study is verified.
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Authors
Citation
Ito, M., Ikawa, S., Murayama, K., and Sano, M., "Development of Abradable Flame Spray Coating Technology," SAE Technical Paper 910400, 1991, https://doi.org/10.4271/910400.Also In
References
- Japan Thermal Spray Conference Handbook of Thermal Spray 1987
- Saito Akinori et al Development of Measurement of Flame Temperature in The Cylinder with Two-color Type High-Speed Shutter Camera The Paper of the 7th United Symposium about an Internal Combustion Engine 216 317 1988
- Chandler P.E. et al The Formation of Dense, Adhereut Coatings by Plasma Spraying Surfacing Journal Inter National 1 4 122 127 1986
- Hamada Shoichi Trend of Thermal Spray Journal of The Japan Society of Mechanical Engineering
- Wei D. et al Melting Metal Powder Particles in an Inductively Coupled R.F.Pl Plasma Torch Metallurgical Transactions 198 213 226 1988
- Holman J.P. Conductive Engineering Brain Books 1985