Turbine, manufacturing method thereof, and power generating system

摘要

A turbine according to an embodiment includes: a formation object member (20); a facing member; and a seal part (21). A formation object member is one of a static part (4) and a rotation part (14). A facing member is the other of the static part and the rotation part. A seal part at the formation object member is configured to reduce combustion gas leaking between the formation object member and the facing member. The seal part including a ceramics layer (211). The ceramics layer has a heat conductivity lower than that of the formation object member, and has a concave and convex shape at a surface thereof. The ceramics layer (211) is not in contact with the facing member, or has hardness higher than that of the facing member so that the facing member is preferentially abraded when the facing member and the ceramics layer are in contact with each other.