This study assesses the potential of an amorphous-type steel for use as a thermal barrier coating (TBC) on aluminum surfaces. A high-alloy steel powder was deposited on aluminum 6061 substrates by plasma spraying. Coating samples were examined, then thermally cycled to failure. The coatings showed good microstructural stability up to 500 °C, but their spalling resistance was inferior to that of arc-sprayed stainless steel, probably due to lower initial bond strength.

amorphous steel, bond strength, plasma spraying, spalling resistance, thermal barrier coatings, thermal cycling test
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2014
DVS Media GmbH
Topics
Amorphous High-alloy steel Thermal barrier coatings Aluminum-magnesium-silicon alloys Plasma spray coating Bonding strength
Issue Section:
Automotive Applications
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