摘要:
열구조적 복합재 부품의 제작방법은 얀 또는 토우로 형성되고 탄소- 또는 세라믹-전구체를 함유하는 강화 조성물에 함침된 섬유 예비성형체를 제조하고, 탄소- 또는 세라믹-전구체를 열분해로 변형하고, 그리고 나서 예비성형체를 화학 증기 침착으로 조밀화하는 것을 포함한다. 부가적으로 평균 입자 크기가 200 나노미터 미만인 분말형태의 내화성 고형 충전재를 추가로 함유하고 그리고, 열분해 후, 전구체로부터 유래된 탄소 또는 세라믹이 예비성형체의 겉보기 부피의 3% 내지 10%를 나타내는 부피를 점유하고 그리고 고형 충전재가 예비성형체의 겉보기 부피의 0.5% 내지 5%를 나타내는 부피를 점유하는 강화 고형상이 되도록 하는 강화 조성물이 사용된다.
摘要:
A method in which a novel composite compound excellent in heat resistance, lightweight property, flame retardancy, chemical resistance, and electrical conductivity can be obtained inexpensively and a substance which is harmful chemically or morphologically is converted into a harmless substance through a safe operation. The operation yields a structure which comprises the inorganic compound made harmless and the composite compound with which the surface of the inorganic compound is coated. Application of the method to a waste treatment can hence contribute to resource recycling. The compound is a carbon/aluminum composite compound obtained by distilling an aqueous dispersion containing poly(aluminum chloride) and a water-soluble organic substance to remove the water and then burning the residue at 300°C or higher. The structure is one made of an inorganic compound coated with a carbon/aluminum composite compound and is obtained by impregnating inorganic compound particles with an aqueous solution containing poly(aluminum chloride) and a water-soluble organic substance and burning the resultant particles. Also provided is a method of waste treatment which comprises ripping off a waste containing an acicular inorganic compound while spraying an aqueous poly(aluminum chloride) solution thereover, subsequently infiltrating a water-soluble organic substance into the waste, and burning the mixture.
摘要:
PURPOSE: A method for manufacturing thermostructural composite material member which preserves ability of fiber structure to deformation. CONSTITUTION: A method for manufacturing thermostructural composite material member comprises: a step(12) of forming a first serial surfactant layer on the fiber of fireproof; a step(14,16) of embodying fiber structure in which consolidation composition is injected to form fiber perform; a step(18) of converting a resin to discontinuous solid residue through pyrolysis; a step(22) of forming a second serial surfactant layer; and a step of performing densification of perform with fireproof matrix.
摘要:
고온에서 탄소섬유의 산화를 방지하여 내열/내삭마성의 특성을 향상시키기 위해, 본 발명에서는 고분자 수지 용액에 세라믹 분말을 분산시켜서 만든 혼합 용액에 의한 간단하게 탄소/탄소 복합재료에 내산화 코팅이 이루어지는 탄소/탄소 복합재료의 내산화 코팅방법을 제공한다.
摘要:
One or more two-dimensional fiber fabrics of carbon or carbon precursor fibers are impregnated (58, 59) by a solution or a suspension capable of allowing a dispersion of discrete ceramic particles to remain in the fiber fabric, and a fiber preform (51) is made by superposing plies formed of two-dimensional fabric made of carbon or carbon precursor fibers, the plies being bonded to one another, and at least some of the plies being at least partially formed of a previously-impregnated two-dimensional fabric. The field of application is particularly that of friction parts made of C/C composite material with incorporated ceramic particles.
摘要:
In one embodiment, a composition (10) to be mixed with a molten metal to make a metal matrix composite, the composition characterized by: a ceramic reinforcing filler (12), the ceramic reinforcing filler not being wettable by molten aluminum and/or not being chemically stable in molten aluminum, the ceramic reinforcing filler being coated with a ceramic material, the ceramic material being wettable by and chemically stable in molten aluminum. In a related embodiment, a composition (20) to make a porous preform to be infiltrated by molten metal to make a metal matrix composite, the composition characterized by: a ceramic reinforcing filler (23), the ceramic reinforcing filler not being wettable by molten aluminum, the ceramic reinforcing filler being coated with a ceramic material (22) and optionally with a metal (21) such as nickel, the ceramic material being wettable by molten aluminum. The ceramic material can be coated on the ceramic reinforcing filler by a vacuum deposition technique such as vacuum sputtering.