Ceramic coating member
AssigneesHojitsu Seiko Co., Ltd., National Institute of Advanced Industrial Science and Technology
InventorsJun Akedo, Isao Ohno
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Abstract
A ceramic coating member with excellent rust prevention performance is provided. A ceramic coating member according to an embodiment of the present invention has a ceramic membrane arranged with ceramic fine particles on a metal substrate, wherein one-dimensional surface kurtosis (Rku) of the ceramic membrane is 3 or less, or two-dimensional surface kurtosis (Sku) is 3 or less, or 1<(Rkub·Hyp)/Hys<6, in the case where one-dimensional interface kurtosis of a convexoconcave formed at an interface of the ceramic membrane and the metal substrate is defined as Rkub, a hardness of the metal substrate is defined as Hvs, and a hardness of the ceramic particles is defined as Hvp.
Claims4
A ceramic coating member comprising:
- a ceramic membrane arranged with a plurality of ceramic fine particles on a metal substrate;
- and an anchoring layer having a convexoconcave at an interface of the metal substrate with the ceramic membrane, wherein one-dimensional surface kurtosis (Rku) of the ceramic membrane is 3 or less, or two-dimensional surface kurtosis (Sku) is 3 or less, or 1<(Rkub·Hvp)/Hvs<6, in a case where one-dimensional interface kurtosis of the convexoconcave formed at the interface of the metal substrate with the ceramic membrane is defined as Rkub, a hardness of the metal substrate is defined as Hvs, and a hardness of ceramic particles is defined as Hvp, and wherein the plurality of ceramic fine particles are fine particles in which a ceramic particle material is refined, and a relationship of 2.5<HvC/HvS<10 is provided between a Vickers hardness (HvC) of the ceramic particle material and a Vickers hardness (HvS) of the metal substrate”.
Dependencies are inferred from the claim text.