초록 ▼

There is disclosed a hybrid treatment into which CVI treatment and PIP treatment are combined. A dense matrix is formed around a ceramic fiber by the CVI treatment, and a gap in the matrix is infiltrated/filled well with the matrix by the PIP treatment, so that hermetic properties are enhanced. More

There is disclosed a hybrid treatment into which CVI treatment and PIP treatment are combined. A dense matrix is formed around a ceramic fiber by the CVI treatment, and a gap in the matrix is infiltrated/filled well with the matrix by the PIP treatment, so that hermetic properties are enhanced. Moreover, when a volume ratio of the matrix by the CVI treatment in the total matrix is set to about 5% or more, about 80% or less, fine cracks are present in the matrix by the PIP treatment, so that a binding force of the ceramic fiber is weakened, and Young's modulus can be reduced. As a result, a thermal stress is alleviated and a resistance to thermal shock is enhanced.

대표청구항 ▼

1. A method of manufacturing a ceramic-based composite member, comprising the steps of:performing a C-CVI treatment, performing a first CVI treatment to form an SiC matrix on a surface of a shaped fabric on a jig to form a ceramic-based composite member, separating the jig from the ceramic-based com

1. A method of manufacturing a ceramic-based composite member, comprising the steps of:performing a C-CVI treatment, performing a first CVI treatment to form an SiC matrix on a surface of a shaped fabric on a jig to form a ceramic-based composite member, separating the jig from the ceramic-based composite member, subsequently performing a PIP treatment to infiltrate a gap in the matrix with an organic silicon polymer as a base before performing pyrolysis and forming a dense matrix having fine cracks, and performing a second CVI treatment after the PIP treatment to form an outer dense matrix on the matrix formed by the PIP.