摘要:
A member is obtained by forming a Y 2 O 3 black spray coating on a surface of a substrate or covering the surface of the substrate with a Y 2 O 3 black spray coating through an undercoat or a middle layer. This coating has good heat characteristics and is good in the resistance to damaging through a high hardness. The Y 2 O 3 black spray coating is produced by subjecting white Y 2 O 3 powdery material to a plasma spraying in an inert gas atmosphere containing substantially no oxygen or by forming a Y 2 O 3 white spray coating and then irradiating an electron beam or a laser beam to this coating to melt at least a part of the white coating under heating to thereby smoothen denseness and blacken the surface of the coating.
摘要翻译:通过在基材的表面上形成Y 2 O 3黑色喷涂或者通过底涂层或中间层用Y 2 O 3黑色喷涂覆盖基材的表面而获得成员。 该涂层具有良好的热特性,并且通过高硬度具有良好的耐损坏性。 Y 2 O 3黑色喷涂是通过使白色Y 2 O 3粉末材料在基本上不含氧的惰性气体气氛中进行等离子体喷涂,或者通过形成Y 2 O 3白色喷雾涂层,然后照射电子束或 激光束到该涂层以在加热下熔化至少一部分白色涂层,从而平滑致密度并使涂层的表面变黑。