Abstract No.:	7313
Scheduled at:	Thursday, May 05, 2022, Hall G1 4:00 PM Ceramic Coatings
Title:	Atmospheric plasma spraying of different MgO/Al2O3 feedstocks
Authors:	Robert Vaßen* / Forschungszentrum Jülich GmbH, Germany Lutz Berger / Fraunhofer IKTS, Germany Christoph Vorkötter/ Forschungszentrum Jülich GmbH, IEK-1, Germany Tobias Kalfhaus/ Forschungszentrum Jülich GmbH, IEK-1, Germany Susan Conze/ Fraunhofer IKTS, Germany
Abstract:	Nine commercial and experimental powders from the MgO/Al2O3 system have been investigated in the present project. The composition ranged from MgO / MgAl2O4 composites with more than 70 % MgO to an alumina rich spinel powder. The powders were fused and crushed or agglomerated and sintered. The influence of the composition, the manufacturing route as well as the particle size distribution on the microstructure and the phases in the produced coatings have been investigated. For several of the powders detailed design of experiment plans have been made and properties as deposition efficiency and hardness were optimized. With optimized spray conditions coatings have been produced from all powders which were characterized in depth. Here the results of the thermal cyclic tests will be presented in more detail.

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