摘要:
Provided are a corrosion-resistant member in which, in a case where the corrosion-resistant member is used as a member for an electrostatic chuck, an adsorption force of the electrostatic chuck can be made to be strong when an electric field is applied and a residual adsorption force of the electrostatic chuck can be made to be weak when the application of the electric field is stopped; a member for an electrostatic chuck; and a process for producing a corrosion-resistant member. The corrosion-resistant member includes an oxide which includes samarium and aluminum and has a perovskite type structure. The member for an electrostatic chuck includes the corrosion-resistant member according to the present invention. The process for producing a corrosion-resistant member according to the present invention includes: a step of mixing aluminum oxide powder and samarium oxide powder with a solvent to prepare a slurry including the aluminum oxide powder and the samarium oxide powder; a step of drying the slurry to prepare a mixed powder including the aluminum powder and the samarium oxide powder, and molding the mixed powder to prepare a green body; and a step of calcinating the green body to prepare a sintered body.
摘要:
[Object] To provide a gas nozzle which meets a requirement to suppress the fall of particles.[Solution] A gas nozzle 4 according to an aspect of the present invention includes a columnar main body 13 formed of a ceramic sintered body provided with a through-hole 12 formed therein through which a gas flows, an exhaust port 15 of the through-hole 12 for the gas is formed in one end surface S1 of the main body 13, and the mean width of the profile elements (Rsm) of the one end surface S1 is 5 times or more the average crystalline grain diameter of the ceramic sintered body.
摘要:
The present invention relates to a composite ceramic which comprises a conversion phosphor and a further material, characterized in that the further material has a negative coefficient of thermal expansion, and to a process for the preparation thereof. Furthermore, the present invention also relates to the use of the composite ceramic according to the invention as emission-converting material, preferably in a white light source, and to a light source, a lighting unit and a display device.
摘要:
A handle substrate 1 is made of a translucent ceramics. An average density of pores having a size of 0.5 to 3.0 μm included in a surface region 2A on the side of a bonding face 1a of the handle substrate 1 is 50 counts/mm2 or smaller. It is formed a region 3, whose average density of pores having a size of 0.5 to 3.0 μm is 100 counts/mm2 or larger, in the handle substrate 1. The translucent ceramics has an average grain size of 5 to 60 μm.
摘要翻译:手柄基板1由半透明陶瓷制成。 手柄基板1的接合面1a侧的表面区域2A中包含的尺寸为0.5〜3.0μm的孔的平均密度为50个/ mm 2以下。 在手柄基板1中形成有尺寸为0.5〜3.0μm的孔的平均密度为100个/ mm 2以上的区域3。透光性陶瓷的平均粒径为5〜60μm。
摘要:
A semiconductor light emitting device comprising a light emitting layer disposed between an n-type region and a p-type region is combined with a ceramic layer which is disposed in a path of light emitted by the light emitting layer. The ceramic layer is composed of or includes a wavelength converting material such as a phosphor. Luminescent ceramic layers according to embodiments of the invention may be more robust and less sensitive to temperature than prior art phosphor layers. In addition, luminescent ceramics may exhibit less scattering and may therefore increase the conversion efficiency over prior art phosphor layers.
摘要:
An article, such as a light emitting device, can include a first material and a second material, wherein the first material is capable of emitting first radiation having a first emission maximum at a first wavelength, and the second material is capable of emitting second radiation in response to capturing the first radiation. The second material can have a second emission maximum at a second wavelength within the visible light spectrum. In an embodiment, the second material can be different from the first material. In another embodiment, a difference between the first wavelength and the second wavelength can be at least approximately 70 nm. Additionally, the second material can include a luminescent material having a formula of Gd3(x)Y3(1-x)Al5(y)Ga5(1-y)O12, where x is at least approximately 0.2 and no greater than approximately 0.99 and y is at least approximately 0.05 and no greater than approximately 0.99.
摘要:
The present invention relates to an afterglow coating comprising a clear varnish and a photoluminescent pigment, wherein the pigment comprises a white luminous color in which the clear varnish is distributed. The present invention furthermore relates to methods for producing these coatings and to their use for coating surfaces in the cabin of aircraft.
摘要:
Disclosed herein is a method to produce multiphase composite materials directly from solution precursor droplets by a fast pyrolysis process using a microwave plasma embodiment containing a microwave generating source, a dielectric plasma torch, and a droplet maker. Here, using homogenous solution precursors, droplets are generated with a narrow size distribution, and are injected and introduced into the microwave plasma torch with generally uniform thermal path. The generally uniform thermal path in the torch is achieved by axial injection of droplets into an axisymmetric hot zone with laminar flows. Upon exposing to high temperature within the plasma with controlled residence time, the droplets are pyrolyzed and converted into particles by quenching with a controlled rate of the exhaust gas in a gas chamber. The particles generated have generally uniform sizes and uniform thermal history, and can be used for a variety of applications.
摘要:
A heat-insulating material is provided in which thermal conductivity is controlled not to increase and good insulation properties are held even in a high temperature range. The heat-insulating material is formed of a spinel porous sintered body having a porosity of 65 to 90 vol. % and represented by a chemical formula XAl2O4 (X=Zn, Fe, Mg, Ni, or Mn) which is arranged such that large pores having a diameter of greater than 1000 μm occupy 25 vol. % or less of the total pore volume, fine pores having a diameter of 0.45 μm or less occupy 5 to 40 vol. % of the volume of the pores having a diameter of 1000 μm or less, at least one pore-diameter distribution peak is within a range of 0.14 to 10 μm, and is formed of sintered particles having a calculated average particle diameter of 0.04 to 1 μm.
摘要:
Disclosed are compositions, devices and methods related to thermal barrier coating materials having enhanced toughness. In some embodiments, a multiphase ceramic can include a first phase formed from a cubic and/or a tetragonally stabilized metal oxide, and a second phase formed from a magnetoplumbite-based aluminate that is chemically compatible with the first phase. Various example applications in which such materials can be utilized are disclosed.