Abstract:
PROBLEM TO BE SOLVED: To provide a heat resistant member provided with a thermal insulation coating layer having stable thermal conductivity even at a high temperature of ≥1,200°C and free from the cracks and peeling of the coating caused by sintering, and having excellent heat resistance and durability. SOLUTION: In the heat resistant member composed of: a base material 1 consisting of a metal or ceramic member; and a thermal isolation coating layer 4 applied to the surface of the base material 1, and in which the thermal insulation coating layer 4 is composed of a metal layer 2 functioning as a joining layer; and at least one ceramic layer 3 applied to the upper face of the metal layer 2, at least one layer of the ceramic layer(s) 3 is composed of a ceramic layer essentially consisting of hafnium oxide, and further, the ceramic layer comprises the hafnium oxide by ≥85%. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
An object of this invention is to provide a surface protective film which is capable of suppressing the entry of a corrosive gas as compared with conventional surface protective films. A surface protective film according to this invention is a film which contains yttria (Y2O3) as a main component and also contains cerium. Since the surface protective film contains cerium, defects such as micropores in the film are reduced, thereby enabling suppression of the entry of a corrosive gas.
Abstract:
A multiphase, high-temperature material contains an intermetallic base alloy of the Ti.sub.3 Al type, which is intended especially for use in heat engines such as internal combustion engines, gas turbines and aircraft engines. The material contains from 44 to 73 atom % titanium, from 19 to 35 atom % aluminum, from 2 to 6 atom % silicon, and from 5 to 15 atom % niobium. The desired microstructure is attained by heat treating the alloy at between 800.degree. and 1100.degree. C.
Abstract:
A method for producing a metallic component provided with a ceramic lining in a mold includes applying a first ceramic layer to a mold. A sliding layer is applied to the first ceramic layer. A second ceramic layer divided by joints into individual zones is applied to the sliding layer. The second ceramic layer is coated with a metal forming a finished component.
Abstract:
Disclosed is a method of operating a catalytic ignition internal combustion engine wherein the fuel is injected into a combustion chamber at a time near maximum compression such that at least part of the fuel impinges upon an oxidation catalyst surface comprising a portion of the wall of said combustion chamber, said catalytic surface being insulated from the surroundings external to the combustion chamber by a low thermal conductivity material, said catalytic surface preferably comprising platinum. Also disclosed are combustion chambers constructed specially for the use of this method and the methods of constructing them.
Abstract:
Disclosed is a method of operating a catalytic ignition internal combustion engine wherein the fuel is injected into a combustion chamber at a time near maximum compression such that at least a part of the fuel impinges upon an oxidation catalyst surface comprising a portion of the wall of said combustion chamber, said catalytic surface being insulated from the surroundings external to the combustion chamber by a low thermal conductivity material, said catalytic surface preferably comprising platinum. Also disclosed are combustion chambers constructed specially for the use of this method and the methods of constructing them.
Abstract:
In a cylinder head (1) of a piston engine, a thermal insulation component having openings for the accommodation of valve seats, spark plugs, and injection nozzles consists of a circular aluminum titanate plate (2) which is shrink-fitted into a planar circular ring of zirconium oxide (12) gripped or shrink-fitted in the cylinder head. The circular plate (2) of aluminum titanate forms the greatest part of the cylinder head bottom (9).
Abstract:
A magnesium - rare earth - yttrium - zinc alloy consists of 0.2-1.5% by weight zinc and rare earth(s) (RE) and yttrium in amounts which fall within a quadrangle defined by lines AB, BC, CD and DA wherein: A is 1.8% RE - 0.05% Y, B is 1.0% RE - 0.05% Y, C is 0.2% RE - 0.8% Y, and D is 1.8% RE - 0.8% Y.