摘要:
Disclosed are embodiments of synthetic garnet materials for use in radiofrequency applications. In some embodiments, increased amounts of bismuth can be added into specific sites in the crystal structure of the synthetic garnet in order to boost certain properties, such as the dielectric constant and magnetization. Accordingly, embodiments of the disclosed materials can be used in high frequency applications, such as in base station antennas.
摘要:
A method for fabricating a molding tool for mold glass optical elements therewith is taught. The method comprises the steps of figuring the molding tool to have a predetermined mold surface; applying an attenuating coating to the predetermined mold surface; implanting metal ions through the attenuating coating and into the predetermined mold surface; and removing the attenuating coating leaving the predetermined mold surface with metal ions implanted therein. The method of fabrication allows for the molding tool made therewith to be used for molding optical elements from eco-glasses such as titania at high temperatures without generating adverse surface chemistry effects in the molded element
摘要:
Dense superconducting ceramic oxide articles of manufacture and methods for producing these articles are described. Generally these articles are produced by first processing these superconducting oxides by ceramic processing techniques to optimize materials properties, followed by reestablishing the superconducting state in a desired portion of the ceramic oxide composite.
摘要:
A composite of a first metal ion and a ceramic composition in the near surface region of the composition is formed by ion mixing of the first metal with the ceramic composition. The composite has been oxidized at high temperatures thereby resulting in an oxide gradient layer in the surface of the ceramic composition. Alternatively, a second metal ion is ion mixed with the first metal ion in the near surface region of the ceramic composition and then oxidized at high temperatures to form an oxide gradient layer in the surface of the ceramic composition.
摘要:
A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons.An ion flux having an energy between 500 eV and 1000 eV and a current density between 1.0 mA/cm.sup.2 and 6.0 mA/cm.sup.2 produces surface roughening or texturing which is in the form of needles or spines.Such textured surfaces are especially useful as anode collector plates in high efficiency electron tube devices.
摘要翻译:热解石墨的特殊纹理表面表现出非常低的二次电子产率,并且在高能量一次电子碰撞后反射的一次电子数量减少。 具有500eV至1000eV之间的能量和1.0mA / cm 2至6.0mA / cm 2之间的电流密度的离子通量产生呈针状或棘形形式的表面粗糙化或纹理化。 这种纹理表面在高效电子管装置中特别适用于阳极集电板。
摘要:
A fluid impermeable thin film is fabricated on a porous substrate by depositing a material having a certain spatial oxidation expansion. After deposition, the material is oxidized whereby the deposited material expands and forms a void free film on top of the porous substrate. The snuggly contacting grain boundaries of the void free film may recombine to a continuous thin film that has a thickness of only a fraction of 1 μm and is substantially fluid impermeable. The small film height contributes to a high ionic conductivity that makes the thin film a preferred choice for a fuel cell electrolyte membrane enabling efficient fuel cell operation at temperatures well below 500° C.
摘要:
A coated cement board article capable of receiving a sublimatable ink and a process for making same includes coating a cement board substrate with a radiation curable top coat. The radiation curable top coat is subjected to a curing step which includes curing with either an electron beam, ultraviolet radiation or a combination thereof. A sublimatable ink may be transferred into the top coat.
摘要:
A process for modifying the surfaces of a polymer, ceramic, ITO or glass by irradiating energized ion particles onto the surfaces of the polymer, ceramic, ITO or glass, while blowing a reactive gas directly over the surface of the polymer, ceramic, ITO or glass under a vacuum condition, to decrease the wetting angle of the surface. The process can be widely used in the fields of polymers because it provides effects of increasing the spreading of aqueous dyestuffs, increasing adhesive strength with other materials and inhibition of light scattering by decreasing the wetting angle of the material surface.
摘要:
The present invention relates to a process for modifying a polymer surface by irradiating ion particles with energy on a polymer surface, while blowing the reactive gas directly on the polymer surface under vacuum condition, to decrease the wetting angle of the polymer surface. The process for modifying the polymer surface according to the present invention can be widely used in the application fields of polymers because it provides effects of increasing the spreading of aqueous dyestuffs, increasing adhesive strength with other materials and inhibition of light scattering by decreasing the wetting angle of the polymer surface.
摘要:
A ceramic article is treated to increase the adhesion of metals to the ceramic article by placing the ceramic article under at least a partial vacuum. A thin film of metal is then deposited on the ceramic article by sputtering or evaporating. The metallized ceramic article is further bombarded by high energy ions, resulting in the formation of a metal-ceramic compound that renders the article more receptive to further metal deposition.