成果報告書詳細
管理番号20160000000734
タイトル*平成27年度中間年報 次世代構造部材創製・加工技術開発 研究開発項目(4)ー2 軽量耐熱複合材CMC技術開発(高性能材料開発) その4
公開日2016/9/28
報告書年度2015 - 2015
委託先名川崎重工業株式会社
プロジェクト番号P15006
部署名材料・ナノテクノロジー部
和文要約
英文要約Title : Development of CMC technologies of lightweight and heat-resistant composite materials (FY2015-FY2017) FY2015 Annual Report

The aim of this project is to develop SiC/SiC CMC materials that can be applied as the combustor liner for use in aircraft engines through the four items of: 1) Establishing the design and fabricatng technology of the woven fabric preform for SiC/SiC CMC; 2) Developing a matrix formation process that provides the optimal balance of higher production rate, lower cost, and superior performance; 3) Developing inspection and evaluation technology of material soundness; and 4) Developing SiC/SiC CMC materials using the latest SiC fiber with higher performances. In this fiscal year, we achieved faborable results for each of the items mentioned above, as is described below. (1) Establishing the design and production technology of the woven fabric preform for SiC/SiC CMC. We selected a promising candidate facility, and we intend to study the detailed specifications in the near future. At the same time, we studied ways to prevent fiber yarn damage and confirmed certain faborable effects. These studies revealed new problems, and we intend to work out the necessary remedies. (2) Developing the matrix formation process. We tentatively coat BN on each SiC filament as the interphase between the filament and matrix in SiC/SiC CMC. We confirmed that the furnace geometry is important because of the higher responsivity of the raw material gas. We will consider the method of charging to the furnace and the position of furnace components. We have our own proprietary technologies that utilize a method for dispersing glass powder into a matrix. We carried out the selection and preliminary evaluation of new glass powder for combustor liners. We plan to compare the physical properties of SiC/SiC CMC with these powder. (3) Developing the inspection and evaluation technology of material soundness. We conducted a study of the basic concept of damage to SiC/SiC CMC. We will carry out studies in the future on various inspection methods, including measurement of the dielectric constant or electrical conductivity, and ultrasonic flaw detection. (4) Developing SiC/SiC CMC materials using high-performance SiC fibers. We conducted an evaluation of weaving performance using the latest SiC fiber with higher performances. We evaluated the weaving performance of it.
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