高温機器の構造要素へのセラミックス利用技術

概要

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Fine ceramics offer excellent high strength and durability characteristics at elevated temperature ; however a brittle material shows catastrophic failure without any plastic deformations. By considering these characteristics, we discuss the structural design concepts which must be established to make the best use of ceramics for high temperature machines for which high reliability is required. Based on the ceramic oriented structural design concepts, a ceramic/metal hybrid structure of 1 st stage ceramic stator vanes in industrial gas turbines was developed. In this hybrid stator vane, the components to be exposed to a high temperature and a corrosive environment are made of ceramics, and metal is used as the strength member. Moreover, a thermal shock testing method for a ceramic was proposed to evaluate the thermal shock resistance which is most important in putting the ceramic component into practice.
社団法人日本機械学会の論文
1988-09-25