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:
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:
A high temperature component (2) has an intermediate layer (3) formed by a spraying on a surface in part thereof and comprised of an oxide ceramics set containing a glass, and an environment resistant coat (4) formed on a surface of the intermediate layer (3) and comprised of a coating material having a heat resistance and a water vapor wall-thinning resistance. The oxide ceramics set is a set of kinds of oxide ceramics adapted to be unchanged in crystalline phase, or isometric in cubic volume even when phase-changed, within a temperature range from a room temperature to 1,400 degrees C., the set of kinds of oxide ceramics having a coefficient of thermal expansion between a coefficient of thermal expansion of an SiC series ceramics matrix composite constituting the high temperature component (2) and a coefficient of thermal expansion of the coating material constituting the environment resistant coat (4).
摘要:
An acoustic wave device includes a ladder-type filter in which resonators are connected in a ladder configuration. In the acoustic wave device, series-connected resonators are connected in a parallel line in the ladder-type filter, and the resonators connected in the parallel line have mutually different resonance frequencies.
摘要:
An acoustic wave device includes a ladder-type filter in which resonators are connected in a ladder configuration. In the acoustic wave device, series-connected resonators are connected in a parallel line in the ladder-type filter, and the resonators connected in the parallel line have mutually different resonance frequencies.
摘要:
The present invention provides a rack and pinion mechanism which avoids collision between respective tooth tops of a rack gear and a pinion gear due to a phase shift between the rack gear and the pinion gear with a simple mechanism and meshes the rack gear and the pinion gear smoothly.The rack and pinion mechanism includes a rack gear 16 fixed to a stage 20 moving on a carrying track 7 while loading a carried object thereon and a plurality of pinion gears 17 connected to a drive source 13. At least two of the pinion gears are synchronized and rotate to mesh with the rack gear in sequence, whereby the rack gear is delivered from the pinion gear in the current process to the pinion gear in the subsequent process, so that the stage is carried. The rack and pinion mechanism includes detection means that detects a phase difference of the pinion gear and a controller 25 which has a storage part 27, storing the detected phase difference, and controls the phase difference of the pinion gear in the subsequent process based on the phase difference of the pinion gear in the current process.