摘要:
A shower plate is disposed in a processing chamber in a plasma processing apparatus, and plasma excitation gas is released into the processing chamber so as to generate plasma. A ceramic member having a plurality of gas release holes having a diameter of 20 μm to 70 μm, and/or a porous gas-communicating body having pores having a maximum diameter of not more than 75 μm communicating in the gas-communicating direction are sintered and bonded integrally with the inside of each of a plurality of vertical holes which act as release paths for the plasma excitation gas.
摘要:
Occurrence of a back-flow of plasma or ignition of gas for plasma excitation in a longitudinal hole portion can be prevented more completely, and a shower plate in which efficient plasma excitation is possible is provided. In shower plate 105, which is arranged in processing chamber 102 of a plasma processing apparatus and discharges gas for plasma excitation into processing chamber, porous-gas passing body 114 having a pore that communicates in the gas flow direction is fixed onto longitudinal hole 112 used as a discharging path of gas for plasma excitation. The pore diameter of a narrow path in a gas flowing path formed of a pore, which communicates to porous-gas passing body 114, is 10 μm or lower.
摘要:
A disclosed top plate that is configured as a solid part and provided in an opening in a ceiling portion of a plasma process chamber whose inside is evacuatable to vacuum includes plural gas conduits formed in a horizontal direction of the top plate; and gas ejection holes that are open in a first surface of the top plate, the first surface facing the inside of the plasma process chamber and in gaseous communication with the plural gas conduits.
摘要:
A shower plate is disposed in a processing chamber in a plasma processing apparatus, and plasma excitation gas is released into the processing chamber so as to generate plasma. A ceramic member having a plurality of gas release holes having a diameter of 20 μm to 70 μm, and/or a porous gas-communicating body having pores having a maximum diameter of not more than 75 μm communicating in the gas-communicating direction are sintered and bonded integrally with the inside of each of a plurality of vertical holes which act as release paths for the plasma excitation gas.
摘要:
Provided is a shower plate capable of more securely preventing the occurrence of backflow of plasma and enabling efficient plasma excitation. A shower plate 106 is disposed in a processing chamber 102 of a plasma processing apparatus and is provided with a plurality of gas discharge holes 113a for discharging a plasma excitation gas to generate plasma in the processing chamber 102, wherein an aspect ratio of a length of the gas discharge hole to a hole diameter thereof (length/hole diameter) is equal to or greater than about 20. The gas discharge holes 113a are made of ceramics members 113 which are separated from the shower plate 106, and the ceramics members 113 are installed in vertical holes 105 opened in the shower plate 106.
摘要:
Occurrence of a back-flow of plasma or ignition of gas for plasma excitation in a longitudinal hole portion can be prevented more completely, and a shower plate in which efficient plasma excitation is possible is provided. In shower plate 105, which is arranged in processing chamber 102 of a plasma processing apparatus and discharges gas for plasma excitation into processing chamber, porous-gas passing body 114 having a pore that communicates in the gas flow direction is fixed onto longitudinal hole 112 used as a discharging path of gas for plasma excitation. The pore diameter of a narrow path in a gas flowing path formed of a pore, which communicates to porous-gas passing body 114, is 10 μm or lower.
摘要:
Provided is a shower plate in which there's no need for a cover plate. The shower plate 105 is disposed in a processing chamber 102 of a plasma processing apparatus, for discharging a plasma excitation gas to generate plasma in the processing chamber 102, and the shower plate 105 includes a horizontal hole 111 for introducing the plasma excitation gas into the shower plate 105 from a gas inlet port 110 of the plasma processing apparatus; and a vertical hole 112 communicating with the horizontal hole 111, wherein the shower plate 105 is formed as a single body.
摘要:
Disclosed is a shower plate which is formed with a large number of process-gas blowing holes having a simple structure, high machinability and high dimensional accuracy without the risk of unevenness in blowing of a process gas and outbreak of particles, while ensuring constant quality and interchangeability. Through a press forming process, a powder for a ceramic material with a low dielectric constant is formed into a disc-shaped compact having dimensions determined in consideration of a sintering shrinkage value and a machining value. A gas inlet passage 3 and a large number of blowing holes 2 for a compact stage are bored in the disc-shaped compact, and then the disc-shaped compact is sintered. Subsequently, the gas inlet passage 3 and a main hole portion 2b in each of the blowing holes are subjected to grinding to have a surface roughness of Is or less. Further, a lapping wire having a taper-shaped end is inserted into an outlet port 2a of the blowing hole 2, and reciprocatingly moved while being slidingly displaced in such a manner that a portion of the lapping wire located in the outlet port 2a is gradually increased in wire diameter, so that the outlet port 2a is lapped to have a diameter of from 0.1 mm to less than 0.3 mm, a dimensional accuracy within ±0.002 mm, and a surface roughness of 1 s or less.
摘要:
Provided is a golf swing training apparatus suited to strengthen target muscles in various body regions necessary for golf swings, and train a proper swing form. The apparatus is designed to, when a user performs a golf swing motion while grasping a grip 24 of a golf swing mechanism 7 whose height position is adjustable depending on a body height of a user, allow the grip to be moved along an arc, and transmit the arc movement of the grip from a swing-arm holder 8 to a weight-arm holder 17 to which a weight arm 18 is fixed, through a swing-power transmission shaft 12, so as to swingingly move the weight arm 18 about an axis of the weight-arm holder 17 to allow a weight member 19 on the weight arm 18 to act as a load countering golf swing power. The apparatus has a mechanism capable of allowing the load based on the weight member fastened to the weight arm to be arbitrarily adjusted depending on individual differences in muscle strength.
摘要:
An auxiliary nozzle for a loom, such as an air jet loom within a shuttleless loom, jets pressurized gas in order to prevent stall of weft inserted into warp shedding. At least a tip portion of an auxiliary nozzle body is formed of ceramics material having a very small integrally-molded surface roughness of 0.5 .mu.m or less and having characteristics of high toughness and high strength whereby occurrence of flaws in warp can be minimized and woven fabric of high quality can be obtained. Particularly, by employment of particular zirconia-type ceramics, the moldability, processing properties for drilling and wear resistance can be improved.