MEMBRANE, AND LAMINATE HAVING THE MEMBRANE

• Main Authors: OGAWA TAKASHI, SHIBATA NAOYA, IKUHARA YUUICHI, KITAOKA SATOSHI, MATSUDAIRA TSUNEAKI
• Format: Patent
• Language: English; Japanese
• Published: 07.09.2017
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AIR INTAKES FOR JET-PROPULSION PLANTS; APPARATUS THEREFOR; BLASTING; CHEMISTRY; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CRYSTAL GROWTH; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; STEAM ENGINES; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; WEAPONS

PROBLEM TO BE SOLVED: To provide an oxide membrane that is used for an engine, a gas turbine or the like of an aircraft and keeps excellent structural stability even when exposed to a temperature of 1,000°C or higher and an atmosphere of different oxygen potentials between one side and the other side, and to provide a laminate having the membrane.SOLUTION: A membrane is made of at least one oxide selected from alumina, mullite, LnSiO, LnSiO(Ln is Yb, Lu, Y, or Gd), HfSiO, and ZrSiO. The oxide has an inclination grain boundary of an inclination θ(=θ+θ) of 0<θ<180 (degree). A laminate includes a membrane having an appearance part 11 where atomic arrangement planes of two crystals forming the inclination appears on one face of the membrane, a base containing an inorganic material, and a coating layer attached to the surface of the base. The coating layer is made of the membrane. The atomic arrangement planes of two crystals forming the inclination of the oxide having the inclination grain boundary contained in the coating layer appear on the surface of the coating layer.SELECTED DRAWING: Figure 1 【課題】航空機のエンジン、ガスタービン等用いられ、１０００℃以上の温度、且つ、１面側と他面側との間で酸素ポテンシャル差のある雰囲気下に曝されても構造安定性に優れる酸化物の膜及びそれを備える積層物の提供。【解決手段】アルミナ、ムライト、Ｌｎ２ＳｉＯ５、Ｌｎ２Ｓｉ２Ｏ７（Ｌｎは、いずれも、Ｙｂ、Ｌｕ、Ｙ又はＧｄ）、ＨｆＳｉＯ４、ＺｒＳｉＯ４から選ばれた少なくとも１種からなる酸化物の膜であって、酸化物の傾角θ（＝θ１＋θ２）が、０＜θ＜１８０（度）の傾角粒界を有しており、前記傾角を形成する２つの結晶の原子配列面が、膜の１面側に表出する表出部１１を備える膜、及び、無機材料を含む基部と、前記基部の表面に接合されている被覆層とを備え、前記被覆層は、前記の膜からなり、前記被覆層に含まれる傾角粒界を有する酸化物の傾角を形成する２つの結晶の原子配列面が被覆層の表面に表出している積層物。【選択図】図１