RARE EARTH ELEMENT FLUORIDE SPRAY POWDER AND RARE EARTH ELEMENT FLUORIDE-SPRAYED ARTICLE

摘要

PROBLEM TO BE SOLVED: To obtain a rare earth element fluoride spray powder which is suitable for atmospheric plasma spraying, and to provide a rare earth fluoride-sprayed article produced using the rare earth element fluoride spray powder, which undergoes few partial color changes and can achieve its original long service life when used as a plasma resistant article in a halogen gas plasma.

SOLUTION: The powder includes rare earth element fluoride particles having an aspect ratio of up to 2, an average particle size of 10 to 100 μm, a bulk density of 0.8 to 1.5 g/cm3, and a carbon content of 0.1 to 0.5 mass%.

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