Ceramic matrix composite member

Abstract

A ceramic matrix composite member including a ceramic matrix composite reinforced by ceramic fiber, includes a body portion and a joint portion joined integrally to the body portion, the joint portion occupying a part of a surface of the ceramic matrix composite member, wherein the body portion includes at least one hole extending toward an inside of the body portion from a boundary surface between the body portion and the joint portion, and the at least one hole is filled with a matrix of the ceramic matrix composite, wherein the body portion includes a first region where a density of the ceramic fiber is relatively high and a second region where the density of the ceramic fiber is lower than that in the first region, and wherein the at least one hole exists so as to cut off a part of bundles of the ceramic fiber in the second region.

1 . A ceramic matrix composite member comprising a ceramic matrix composite reinforced by ceramic fiber, comprising:
 a body portion; and   a joint portion joined integrally to the body portion, the joint portion occupying a part of a surface of the ceramic matrix composite member,   wherein the body portion includes at least one hole extending toward an inside of the body portion from a boundary surface between the body portion and the joint portion, and the at least one hole is filled with a matrix of the ceramic matrix composite,   wherein the body portion includes a first region where a density of the ceramic fiber is relatively high and a second region where the density of the ceramic fiber is lower than that in the first region, and   wherein the at least one hole exists so as to cut off a part of bundles of the ceramic fiber in the second region.   
     
     
         2 . The ceramic matrix composite member according to  claim 1 ,
 wherein the ceramic fiber includes a layer including a first bundle of the ceramic fiber extending in a first direction, a second bundle of the ceramic fiber extending in the first direction adjacent to the first bundle, a third bundle of the ceramic fiber extending in a second direction interesting with the first direction, and a fourth bundle of the ceramic fiber extending in the second direction adjacent to the third bundle, the first bundle and the second bundle intersecting with the third bundle and the fourth bundle, respectively, and   wherein the at least one hole is formed in a position between the first bundle and the second bundle, and the hole formed is also formed in a position between the third bundle and the fourth bundle.   
     
     
         3 . The ceramic matrix composite member according to  claim 2 , wherein a depth of the at least one hole is smaller than a thickness of a single layer of the ceramic fiber.