摘要:
A support for solid phase extraction is provided for preventing the fracture of the porous body of the support and the space between the porous body and its container, and for processing various amounts of liquids to be processed while maintaining the ease of passage of liquid in use. The support for solid phase extraction comprises a ceramic substrate with one or more holes formed therein, and an inorganic porous material, filled in the hole or holes, which is produced by sol-gel transition accompanied by phase transition.
摘要:
A kiln tool uses a fiber-composite material comprising a yarn aggregate in which yarn including at least a bundle of carbon fibers and a carbon component other than carbon fibers is three-dimensionally combined and integrally formed so as not to separate from each other; and a matrix made of Si--SiC-based fiber filled between the yarn adjacent to each other within the yarn aggregate. The kiln tool has good workability and working accuracy, and excellent durability.
摘要:
The present invention provides: a pressure plate used in a press for production of a liquid crystal panel, the plate being composed of an Si--SiC sintered material containing SiC and Si, and a process for producing a liquid crystal panel. The process includes sealing a liquid crystal in between a plurality of substrates and subjecting the resulting material to pressurization and heating by the use of a pair of the above pressure plates to bond the plurality of substrates. The process using the pressure plates can provide a liquid crystal panel which produces substantially no strain when heated, which has good gap accuracy between substrates, and which has a small surface roughness and high dimensional accuracy. Moreover, the process can produce a liquid crystal panel economically and in a smaller number of steps.
摘要:
A heating storage structure 1 includes a plurality of mounting parts 5 each including a mounting face 9 on which articles 31 to be heated are mounted, which is a part of the surface of the mounting part; and a fixing part 7 to which the plurality of mounting parts 5 are detachably fixed so that the plurality of mounting parts 5 are stacked while each of spaces S1 to S4 is left between the mounting face 9 of one of the mounting parts 5 and the mounting part 5 disposed adjacent to the one mounting part 5, and the plurality of mounting parts 5 include a mounting part 5b provided with the mounting face 9 having a thermal emissivity which is different from that of the mounting face 9 of another mounting part 5a.
摘要:
SiC—C/C composite materials having a suitable kinetic coefficient of friction, good corrosion resistance in strongly oxidizing and corrosive environments, good creep resistance and spalling resistance, and high hardness. The materials are hardly oxidized or abraded even when exposed to high temperatures, while maintaining the excellent impact resistance and light weight of C/C composites. Molten metal pumps using the materials are provided from which components do not dissolve into the molten metal even when used in molten metal and have sufficient thermal impact resistance and oxidation resistance.
摘要:
A member for brakes that has a light weight, shock resistance characteristics, excellent corrosion resistance characteristics etc., high abrasive wear resistance characteristics and is made from fiber-composite material is comprised of an assemblage of yarns in which yarns, containing at least a bundle of carbon fibers and a carbon component other then carbon fiber are three-dimensionally combined and integrally formed so as to avoid separation there between; and matrices made of Si—SiC-based material filling the spaces between said yarns adjacent to each other within said assemblage of yarns.
摘要:
A furnace for sintering non-oxide ceramics, particularly Si.sub.3 N.sub.4, which includes a space for accommodating a ceramic shaped body, carbon heaters arranged around the ceramic shaped body in said space and heat insulating layers of carbon fiber mat that cover the inner walls of the furnace. The furnace also includes sheets composed of laminated graphite leaves having an ash content of not more than 0.3% by weight extendedly provided between the heat insulating layers and the ceramic shaped body. As the carbon heaters, those composed of a high purity graphite having a carbon content of at least 99.9980%, a silicon content of not more than 5 ppm and an iron content of not more than 9 ppm, by weight, are preferably used. A process is also disclosed which utilizes the above apparatuses to protect the shaped body from an influence of carbon fiber dusts liberating from the insulating layers during sintering.
摘要:
A structure defining a divided combustion chamber of an internal combustion engine, including an upper ceramic member and a lower ceramic member having a passage which abut on each other at an interface to form therein the divided combustion chamber such that the chamber communicates with a main combustion chamber through a passage formed in the lower ceramic member. The upper and lower ceramics members have cutouts formed respectively in their outer surfaces so as to cooperate to constitute at least one external recess which extends across the interface. An expansion member is fitted in each external recess, and has a larger coefficient of thermal expansion than the upper and lower ceramic members, whereby the expansion member keeps the upper and lower ceramic members spaced apart from each other by a predetermined amount at their interface while the engine is operated.
摘要:
A precombustion chamber construction of an internal combustion engine includes an upper ceramic body, a lower ceramic body abutting against the upper ceramic body to form a precombustion chamber communicating through an injection hole with a main combustion chamber of the internal combustion engine, and a metal ring member fitted on outer circumferences of the upper and lower ceramic bodies. According to the invention, the precombustion chamber construction comprises a first key member provided in the upper ceramic body and the metal ring member in the proximity of its upper end, and a second key member provided in the lower ceramic body and the metal ring member in the proximity of its lower end. In this manner, the upper and lower ceramic bodies are prevented from being rotatively moved even if they are subjected to rotating forces caused by vibrations of the engine or explosions of a fuel. The precombustion chamber construction is easy to handle and superior in gas sealing because an air layer is easily formed between the metal ring member and a cavity of a cylinder head for accommodating the precombustion chamber construction.
摘要:
A composite material including a base material and composite portions is provided. The base material includes carbon fibers and carbon, and the composite portions include a plurality of protruding portions, which include at least silicon carbide, and which are formed as islands distributed in the base material on at least one surface of the composite material.