ROTATION BODY FOR HEAT ENGINE

摘要

PURPOSE:To prevent the occurrence of getting chipped by arranging for a heat engine such as a gas turbine and the like the ceramic fiber of the tip portions of the fin part of a rotation body along the fin-face and toward the direction of the tip-edges as well. CONSTITUTION:The hub portion 12 and the shaft portion 11 of a rotation body 1 are formed out of ceramic sintered body containing no ceramic fiber. And the fin part 13 is formed out of ceramic sintered body containing ceramic fiber. The ceramic fiber 3 of the tip portions 131 of the fin part 13 is arranged along the fin-face and toward the direction of the tip-edges as well. By this, the occurrence of getting chipped at the fin-tip portions by coming into collision with a foreign matter may be prevented.