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| Abstract No.: |
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| Title: |
Reactive plasma sprayed nitride coatings with improved conductivity
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| Authors: |
Mohammed Shahien* / National Institute of Advanced Industrial Science and Technology, Japan
Motohiro Yamada/ Toyohashi University of Technology, Japan
Masahiro Fukumoto/ Toyohashi University of Technology, Japan
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| Abstract: |
Thermal spray is an industrial developed technology for thick coatings deposition, due to it high deposition rates. However, it was impossible to fabricate the nitride ceramic coatings like aluminum nitride (AlN) directly by the conventional thermal spray. It is attributed to the thermal decomposition of the AlN particles without any stable melting/semi-melting phases in the high temperature conditions. This prevents the AlN particles deposition by thermal spray techniques.
Reactive plasma spraying process is a promising solution to fabricate AlN coatings. It is based on reaction and deposition of molten particles like aluminum and/or alumina in active nitrogen ambient to form the AlN phase. It was possible to fabricate several thick AlN coatings by reactive plasma spray process. This study will show our recent achievements of fabrication of AlN coatings with improved conductivity. Furthermore, the influence of feedstock materials on the coating formation, microstructure and properties will be investigated.
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