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Ceramic matrix composite member and method of manufacturing the same

a composite member and ceramic matrix technology, applied in the field of can solve problems such as the breakage of conventional turbine blades using ceramic matrix composite members, and achieve the effect of less likely to break down

Inactive Publication Date: 2017-10-12
IHI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution significantly reduces the likelihood of breakdown under large centrifugal stress, enhancing the durability and strength of the turbine blade by aligning fibers with stress direction and improving bonding within the composite member.

Problems solved by technology

The conventional turbine blade using the ceramic matrix composite member break down in some cases, because the turbine blade cannot withstand large stress (centrifugal force or the like) applied in a particular direction.

Method used

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  • Ceramic matrix composite member and method of manufacturing the same
  • Ceramic matrix composite member and method of manufacturing the same
  • Ceramic matrix composite member and method of manufacturing the same

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first embodiment

[0024]the present invention provides a ceramic matrix composite member to be used as a turbine blade, which includes: a principal part forming a blade part and a dovetail part; and a subordinate part forming platform parts. A principal fiber in a ceramic fiber fabric forming the principal part is a continuous fiber. The direction of the principal fiber is in parallel with a direction in which centrifugal force is applied. The ceramic fiber fabric forming the principal part and the ceramic fiber fabric forming the subordinate part are unified into an integrated three-pronged fiber fabric. The ceramic matrix composite member is manufactured by: integrating the two ceramic fiber fabrics together by setting the ceramic fiber fabric forming the principal part and the ceramic fiber fabric forming the subordinate part into a mold with the ceramic fiber fabric forming the subordinate part folded at a desired angle to the ceramic fiber fabric forming the principal part; and forming a ceramic...

second embodiment

[0025]In addition, the present invention is a ceramic matrix composite member to be used as a turbine blade, which includes: a principal part forming a blade part and a dovetail part; and a subordinate part forming platform parts. A principal fiber in a ceramic fiber fabric forming the principal part is a continuous fiber. The direction of the principal fiber is in parallel with a direction in which centrifugal force is applied. The ceramic matrix composite member is manufactured by: joining the ceramic fiber fabric forming the principal part and the ceramic fiber fabric forming the subordinate part by stitching; then integrating the joined ceramic fiber fabrics together by setting the joined ceramic fiber fabrics into a mold with the ceramic fiber fabric forming the subordinate part folded at a desired angle to the ceramic fiber fabric forming the principal part; and forming a ceramic matrix in the obtained molded body.

[0026]Descriptions will be provided for the first embodiment by...

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Abstract

A ceramic matrix composite member used as a turbine blade includes a principal part forming a blade part and a dovetail part, and a subordinate part forming a platform part. A principal fiber in a ceramic fiber fabric forming the principal part is a continuous fiber. An extension direction of the principal fiber is in parallel with a direction in which stress is applied. The ceramic fiber fabrics respectively forming the principal part and the subordinate part are joined together and formed into an integrated three-pronged fiber fabric. The ceramic fiber fabric forming the principal part and the ceramic fiber fabric forming the subordinate part are integrated together by being set into a mold with the ceramic fiber fabric forming the subordinate part folded at a desired angle to the ceramic fiber fabric forming the principal part. Then, a ceramic matrix is formed in the obtained molded body.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. application Ser. No. 14 / 250,044 filed Apr. 10, 2014, which is a continuation application of International Application No. PCT / JP2012 / 076160 filed on Oct. 10, 2012, which claims priority to Japanese Patent Application No. 2011-227221 filed on Oct. 14, 2011, the entire contents of each of which are incorporated by reference herein.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention relates to a ceramic matrix composite member and a method of manufacturing the same.2. Description of the Related Art[0003]Jet engines and the like include components which are subjected to large stress applied in a particular direction, such as centrifugal force, while in use. Requirements for such components include particularly high strength as well as heat resistance. For this reason, the components are usually made from metallic materials. FIG. 7A is a schematic cross-sectional view of a ge...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D5/28C04B35/80C04B37/00F01D5/30
CPCF01D5/282F01D5/284F01D5/3084C04B35/80C04B37/001C04B2237/61C04B2235/5256C04B2235/5268C04B2235/614C04B2235/616C04B2237/38F05D2300/6033C04B2235/5224C04B2235/524C04B2235/5244C04B2235/5248C04B2235/5252C04B2237/60B32B18/00C04B37/00Y02T50/60
Inventor WATANABE, FUMIAKI
Owner IHI CORP