CERAMICS HEAT RESISTANT COMPOSITE PART

PURPOSE:To improve heat resistant impact by a method wherein a compression initial stress is exerted on a covering member made of ceramics, a heat insulating layer is formed between the covering member and a reinforcing member made of a metal disposed in the covering member, and a compression stress...

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Bibliographische Detailangaben
Hauptverfasser:	INOUE TAKAO, YONEDA YOICHIRO, MIZOGUCHI TAKATOO, KOBAYASHI MASATO, NAKAYAMA KIMINORI, TAKEUCHI HISASHI, AOTA KENICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL HEATING LIGHTING LIME, MAGNESIA MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS REFRACTORIES SLAG SOLDERING OR UNSOLDERING STEAM ENGINES TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To improve heat resistant impact by a method wherein a compression initial stress is exerted on a covering member made of ceramics, a heat insulating layer is formed between the covering member and a reinforcing member made of a metal disposed in the covering member, and a compression stress is generated even in a steady state. CONSTITUTION:When a part is applied for a vane part 2 and a stator blade 1 for a gas turbine formed with mounting parts 3 and 3 formed at both ends thereof, the blade part 2 is formed such that a metallic liner 6 serving as a reinforcing member is inserted and situated in a ceramic shell 4 serving as a covering member with a heat insulating layer 5 therebetween. In this case, the shell 4 is compressed and nipped by means of a mounting part 3 so that a compression initial stress is generated under a room temperature state at the shell 4. The heat insulating layer 5 is formed between the shell 4 and the liner 6 so that a temperature difference is produced under a steady using state between the shell 4 and the metallic liner 6. This constitution enables the com pression stress of the shell 4 to be held in a given range by means of a tempera ture difference, a difference in the coefficient of thermal expansion, and a sec tional area ratio between the shell 4 and the liner 6.