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Microprocessor Control of the Spraying of Graded Coatings

Published online by Cambridge University Press:  15 February 2011

R. Kaczmarek ,
W. Robert ,
J. Jurewicz ,
M.I. Boulos  and
S. Dallaire
R. Kaczmarek
Affiliation:
Department of Chemical Engineering, University of Sherbrooke Sherbrooke (Quēbec), Canada, JIK 2R1
W. Robert
Affiliation:
Department of Chemical Engineering, University of Sherbrooke Sherbrooke (Quēbec), Canada, JIK 2R1
J. Jurewicz
Affiliation:
Department of Chemical Engineering, University of Sherbrooke Sherbrooke (Quēbec), Canada, JIK 2R1
M.I. Boulos
Affiliation:
Department of Chemical Engineering, University of Sherbrooke Sherbrooke (Quēbec), Canada, JIK 2R1
S. Dallaire
Affiliation:
National Research Council Canada Industrial Materials Research Institute, 75 de Mortagne, Boucherville (Quēbec), Canada, J4B 6Y4
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Abstract

A systematic study was made of the characteristics of a microprocessor controlled powder feeder in view of its utilization for the deposition of graded coating. The unit tested had the capability of feeding three different powders at rates which could be continuously varied up to about 40 g/min. MgOZrO2. was deposited on a stainless steel substrate using a series of thin (Ni/Cr)-Zirconia coats as intermediate layers. The results showed that such a technique could provide a valuable means of achieving a precise and effective control on the composition of the intermediate layers which can have important effects on the final quality of the deposit.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 30: Symposium L – Plasma Processing and Synthesis of Materials I , 1983 , 207
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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