摘要:
A member for semiconductor devices comprising a composite alloy of aluminum or an aluminum alloy and silicon carbide, wherein silicon carbide grains are dispersed in aluminum or the aluminum alloy in an amount of from 10 to 70% by weight, the amount of nitrogen in the surface of the member is larger than that in the inside thereof, and the ratio of aluminum or the aluminum alloy to silicon carbide is the same in the surface and the inside. The member is produced by mixing powdery materials of aluminum or an aluminum alloy and silicon carbide, compacting the mixed powder, and sintering the compact in a non-oxidizing atmosphere containing nitrogen gas, at a temperature between 600.degree. C. and the melting point of aluminum. The member is lightweight and has high thermal conductivity as well as thermal expansion coefficient which is well matches with that of ceramics and others. Therefore, the member is especially favorable to high-power devices.
摘要:
A silicon carbide based composite material includes as a first component, a metal mainly consisting of aluminum or copper, and as a second component, particles mainly consisting of silicon carbide having high purity and few defects. The material is obtained by heating a compact of the raw material powder containing the first and second components at a temperature not lower than the melting point of the metal mainly consisting of aluminum or copper, and by forging and solidifying under pressure. Preferably, the silicon carbide raw material powder is prepared to have high purity by carrying out a preliminary treatment, or the material after forging or a material obtained through a conventional infiltration process is further heated at a temperature lower than the melting point of the first component. In this manner, an improved superior thermal conductivity can be obtained.
摘要:
A member for semiconductor devices comprising a composite alloy of aluminum or an aluminum alloy and silicon carbide, wherein silicon carbide grains are dispersed in aluminum or the aluminum alloy in an amount of from 10 to 70% by weight, the amount of nitrogen in the surface of the member is larger than that in the inside thereof, and the ratio of aluminum or the aluminum alloy to silicon carbide is the same in the surface and the inside. The member is produced by mixing powdery materials of aluminum or an aluminum alloy and silicon carbide, compacting the mixed powder, and sintering the compact in a non-oxidizing atmosphere containing nitrogen gas, at a temperature between 600° C. and the melting point of aluminum. The member is lightweight and has high thermal conductivity as well as thermal expansion coefficient which is well matches with that of ceramics and others. Therefore, the member is especially favorable to high-power devices.
摘要:
The invention provides a substrate processing apparatus including a processing tank for processing substrates, a transporting path provided along the processing tank, a substrate transporting device moving along the transporting path for transporting the substrates, wherein the substrate processing apparatus and the substrate transporting device mounted thereto may realize the improvement of the throughput of substrate processing without increasing the area for installing the substrate processing apparatus. There are provided at least two substrate transporting devices that are capable of moving on the identical transporting path. The movable ranges of the respective substrate transporting devices for transporting the substrates are overlapped with respect to each other. When transportation of the substrates is required simultaneously at a plurality of processing tanks in scheduling data prepared by a scheduler, the scheduling data is determined by referencing substrate transportation sharing conditions.
摘要:
A heat sink substrate has a composite structure including a three-dimensional network structure of SiC ceramic having pores infiltrated with Si, and has a thermal conductivity of not less than 150 W/m·K and an oxygen content of not greater than 7 ppm. The heat sink substrate is easily allowed to have an increased surface area. Further, the heat sink substrate has a higher thermal conductivity and a coefficient thermal expansion close to that of the SiC. Therefore, the heat sink substrate is superior in the efficiency of heat conduction from a semiconductor device. The heat sink substrate is produced by infiltrating a thermally melted Si into the pores of the three-dimensional network structure in a non-oxidative atmosphere in the presence of an oxygen absorber.
摘要:
An inkjet dyeing apparatus for dyeing a belt-shape textile includes a feeding section for feeding the textile, a front surface printing section for dyeing a front surface of the textile by ink ejected thereon, a front surface drying section for drying the front surface of the textile, an inverting section for inverting and feeding the textile to a rear surface printing line, a rear surface printing section for dyeing the rear surface of the textile by ink ejected thereon, and a rear surface drying section for drying the rear surface of the textile. A transporting section is provided to transport the textile for further processing. A control unit controls ink ejection at the front and rear surface printing sections.
摘要:
To provide a substrate material made of an aluminum/silicon carbide composite alloy which has a thermal conductivity of 100 W/m×K or higher and a thermal expansion coefficient of 20×10−6/° C. or lower and is lightweight and compositionally homogeneous. A substrate material made of an aluminum/silicon carbide composite ally which comprises Al—SiC alloy composition parts and non alloy composition part and dispersed therein from 10 to 70% by weight silicon carbide particles, and in which the fluctuations of silicon carbide concentration in the Al—SiC alloy composition parts therein are within 1% by weight. The substrate material is produced by sintering a compact of an aluminum/silicon carbide starting powder at a temperature not lower than 600° C. in a non-oxidizing atmosphere.
摘要:
A multi-pulse speech coder uses synthetic filters for generating crosscorrelated signals without pitch prediction and autocorrelated signals with pitch prediction. These signals are used as a basis for calculations to detect the correlations between the signals with pitch predictions and input speech signals.
摘要:
A 2,5-benzodiazocine derivative represented by a formula ##STR1## wherein R.sub.1 is phenyl or p-methoxyphenyl, R.sub.2 is hydrogen or methyl, and R.sub.3 is p-methoxyphenethyl, 3-(p-fluorobenzoyl)-propyl, cyclopropylmethyl or ##STR2## or a salt of such novel compound as well as a CNS-active pharmaceutical agent containing as an effective component at least one of said derivatives and salts.
摘要:
A member for a semiconductor device of low price, capable of forming a high quality plating layer on a surface, having heat conductivity at high temperature (100° C.) of more than or equal to 180 W/m·K and toughness that will not cause breaking due to screwing, and will not cause solder breaking due to heat stress when it is bonded to other member with solder, and a production method thereof are provided. A member for a semiconductor device (1) having a coefficient of thermal expansion ranging from 6.5×10−6/K to 15×10−6/K inclusive, and heat conductivity at 100° C. of more than or equal to 180 W/m·K, has: a base material (11) formed of an aluminum-silicon carbide composite material starting from powder material in which particulate silicon carbide is dispersed in aluminum or aluminum alloy, and the content of the silicon carbide is from 30% by mass to 85% by mass inclusive; and a superficial layer (12) containing aluminum or aluminum alloy starting from a melt material bonded on top and bottom faces of the base material (11).