PROCESS MODELLING AND -CONTROL OF ATMOSPHERIC PLASMA SPRAYING OF ALUMINA COATINGS

Lugscheider, Erick; Ladru , F.; Eritt, U.; Landes, K. D.; Reusch, A.; Mayr, W.

Progress in Plasma Processing of Materials, 1997

ISBN 打印: 1-56700-093-2

PROCESS MODELLING AND -CONTROL OF ATMOSPHERIC PLASMA SPRAYING OF ALUMINA COATINGS

Erick Lugscheider Werkstoffwissenschaften Lehr und Forschungsgebeit der RWTH Jiilicher Sir. 342-352 52070 Aachen; Surface Engineering Institute (IOT), RWTH University of Technology Aachen, Augustinerbach 4-22, 52066 Aachen, Germany

F. Ladru Materials Science Institute, Aachen University of Technology

U. Eritt Materials Science Institute, Aachen University of Technology, Germany

K. D. Landes Universitat der Bundeswehr Munchen Wemer-Heisenberg-Weg 39, 85577 Neubiberg, Germany

A. Reusch University of the German Armed Forces, Dep. Electrical Engineering, Munich, Germany

W. Mayr Fabhhochschule Munchen Dep. 04 EL, Munich, Germany

Abstract

In this work plasma spraying of A1₂0₃ for wear protection applications is presented. In order to gain a better understanding of the interdependencies between process parameters and resulting coating characteristics as well as to optimise the spray procedure, the processing of alumina has been examined by means of diagnostical techniques and numerical modelling. Temperature measurements on the coating surface by High Speed Pyrometry (HSP) and Laser Doppler Anemometry (LDA) measurements of particles in the plasma have been carried out. Numerical modelling was applied to determine velocity fields of plasma gas and alumina particles.

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