摘要:
An organic silicon polymer is infiltrated and charged into gaps in a matrix phase of a formed fiber fabric, and its airtightness is increased by (a) CVI infiltration process 2 for forming the SIC matrix phase on the surface of the fiber fabric formed, (b) pressurized infiltrations process 4 for pressurizing the organic silicon polymer in the direction operating pressure is applied to the fiber fabric during use and infiltrating the organic silicon polymer into gaps in the aforementioned matrix phase, and (c) heating process 5 for heating the infiltrated fiber fabric at a high temperature. Thus, airtightness can be increased quickly, and fired work can be applied practically even to thrust chambers etc.
摘要:
A method for fabricating a CMC (Ceramic Matrix Composite) article, comprising: performing a CVI (Chemical Vapor Infiltration) treatment for forming a SiC matrix layer on the surface of a woven fabric; performing a machining process, after the CVI treatment, for machining the woven fabric; and performing a PIP (Polymer Impregnation and Pyrolysis) treatment, after the machining process, for impregnating an organic silicon polymer as a base material into voids in the matrix layer and pyrolyzing the organic silicon polymer. By this method, the throughput of CMC articles can be preferably increased. The throughput may be further increased by performing a slurry impregnation treatment before or after the PIP treatment, in which slurried SiC is impregnated into the voids in the matrix layer.
摘要:
A ceramic composite material is comprised of a fabric of fibers of an inorganic substance; and a matrix for combining the fibers. The matrix consists essentially of a ceramic. The matrix is formed by burying the fabric in a mixture of a powder of carbon, a powder of silicon and a medium including an organic solvent, producing an oscillation in the mixture to impregnate the fabric with the mixture, and calcining the fabric impregnated with the mixture.
摘要:
A ceramic composite material is comprised of a fabric of fibers of an inorganic substance; and a matrix for combining the fibers. The matrix consists essentially of a ceramic. The matrix is formed by burying the fabric in a mixture of a powder of carbon, a powder of silicon and a medium including an organic solvent, producing an oscillation in the mixture to impregnate the fabric with the mixture, and calcining the fabric impregnated with the mixture.
摘要:
There is provided Ceramic matrix composites comprising fibers, BN coating applied to the fibers, the BN coating being composed of BN and one of Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, ZrO.sub.2 and lanthanoid family oxide or combinations thereof, and matrices interposed between the fibers. There is also provided Ceramic matrix composites comprising, fibers, BN coating applied to the fibers, the BN coating is composed of BN and coated with one of Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, ZrO.sub.2 and lanthanoid family oxide or combinations thereof, and matrices interposed between the fibers. The ceramic matrix composites in accordance with the present invention is capable of being used at 1000 degrees centigrade or greater in air.
摘要翻译:提供了包含纤维的陶瓷基复合材料,施加到纤维上的BN涂层,BN涂层由BN和Y2O3,Sc2O3,ZrO2和镧系族族氧化物之一或其组合组成的BN涂层以及介于纤维之间的基体。 还提供了陶瓷基复合材料,其中包括施加在纤维上的纤维,BN涂层,BN涂层由BN组成并涂覆有Y 2 O 3,Sc 2 O 3,ZrO 2和镧系族族氧化物之一或其组合,以及介于纤维之间的基体。 根据本发明的陶瓷基复合材料能够在空气中在1000摄氏度或更高的温度下使用。
摘要:
When a molded fabric body (X) is impregnated with a powder (K) of a predetermined material, there are performed a first step of dispersing the powder (K) in a liquid to prepare a slurry, and a second step of burying the molded fabric body (X) made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator (M). Furthermore, in the second step, the vibrator (M) is moved along a surface of the molded fabric body (X). As a result, it is possible to improve the rate of impregnation of the powder (K) more than that in the conventional cases, irrespective of the shape of the molded fabric body (X).
摘要:
When a molded fabric body (X) is impregnated with a powder (K) of a predetermined material, there are performed a first step of dispersing the powder (K) in a liquid to prepare a slurry, and a second step of burying the molded fabric body (X) made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator (M). Furthermore, in the second step, the vibrator (M) is moved along a surface of the molded fabric body (X). As a result, it is possible to improve the rate of impregnation of the powder (K) more than that in the conventional cases, irrespective of the shape of the molded fabric body (X).
摘要:
There is disclosed a method of mixing/dispersing solid phases of a carbon powder 4 and silicon powder 5, impregnating a woven fiber 2 with the powders, and subsequently exposing the woven fiber to a high temperature sufficient for reaction calcining to react/calcine the woven fiber, so that only small amounts of C and Si particles remain, a matrix forming speed is high, and CMC having high airtightness can be manufactured in a short time.
摘要:
There is disclosed a hybrid treatment into which CVI treatment and PIP treatment are combined. A dense matrix is formed around a ceramic fiber by the CVI treatment, and a gap in the matrix is infiltrated/filled well with the matrix by the PIP treatment, so that hermetic properties are enhanced. Moreover, when a volume ratio of the matrix by the CVI treatment in the total matrix is set to about 5% or more, about 80% or less, fine cracks are present in the matrix by the PIP treatment, so that a binding force of the ceramic fiber is weakened, and Young's modulus can be reduced. As a result, a thermal stress is alleviated and a resistance to thermal shock is enhanced.
摘要:
An image transmitting apparatus is provided that automatically displays an address before transmission if a user gives an instruction for adding a mark such as “CONFIDENTIAL” or “IMPORTANT”. The image transmitting apparatus of the present invention is the image transmitting apparatus transmits image data to a specified address includes an image adding portion that adds a predetermined specific image to the image data in accordance with a user's operation, wherein displays a specified address of image data before transmitting the image data to which it is indicated to add the specific image and transmits the image data with the specific image added in accordance with a user's confirming operation.