Abstract:
For a substrate having fine convexoconcave patterns on its surface, the dimensions of the convexoconcave patterns in a vertical direction of a quartz glass substrate are controlled to be uniform with extreme accuracy and over the entire substrate surface. The quartz glass substrate is made to have a fictive temperature distribution of at most 4O°C and a halogen concentration of less than 400 ppm, or a fictive temperature distribution of at most 4O°C, a halogen concentration of at least 400ppm and a halogen concentration distribution of at most 400ppm and the etching rate of the surface of the quartz glass substrate is made uniform, whereby the dimensions of the convexoconcave patterns in a vertical direction of the quartz glass substrate are controlled to be uniform with good accuracy and over the entire substrate surface.
Abstract:
A ceramic foam filter for molten aluminum alloys comprising an alumina silicate rich core and a boron glass shell and a chemical composition comprising: 20 - 70 wt% Al 2 O 3 , 20 - 60 wt% SiO 2 , 0-10 wt% CaO, 0-10 wt%; MgO and 2-20 wt% B 2 O 3 .
Abstract translation:一种用于熔融铝合金的陶瓷泡沫过滤器,其包含富铝硅酸盐芯和硼玻璃壳以及化学组成,其包含:20-70重量%的Al 2 O 3,20 - 60重量%SiO 2,0-10重量%CaO,0-10重量%; MgO和2-20重量%的B 2 O 3 3。
Abstract:
A method for stabilizing a porous thermal barrier coating (16) plasma sprayed on a substrate (10) comprises the steps of immersing the porous thermal barrier coating (16) in a sol gel comprising a metal oxide or precursor thereof, a solvent, and a surfactant, applying vacuum pressure to the sol gel to infiltrate the porous thermal barrier coating (16) with the sol gel, and drying the sol gel to produce residual metal oxide particles (18) in the porous thermal barrier coating (16).
Abstract:
The embodiments relate to an electrochemical cell that includes a first layer including a porous ceramic layer having pore channels. The pore channels can be infiltrated with a conductive coating, and can be sufficiently large that a majority of the pore channels remain open after applying the conductive coating. The cell can include a second layer on the first layer, the second layer including a porous interlayer. The first and second layer can function as an anode or a cathode. The cell can include a third layer including a ceramic membrane, and a cathode positioned on the third layer. The embodiments also relate to a method of making an electrochemical cell.
Abstract:
La présente invention porte sur une composition cristalline ou partiellement cristalline poreuse massive comprenant au moins SiO 2 , Ca O , Na 2 O, et P 2 O 5 , comprenant des micropores et des macropores, caractérisée en ce que : , le taux de porosité va de 50% à 80%, de préférence de 60 à 75%, mesuré par la méthode géométrique, , le diamètre moyen des macropores va de 100 à 1250 microns, de préférence de 150 microns à 300 microns, , le diamètre moyen des micropores est inférieur ou égal à 5 microns, , la résistance en compression va de 7 MPa à 70 MPa. Elle porte également sur le procédé de préparation d'une telle composition et sur une telle composition traitée par un liquide physiologique de composition ionique proche de celle du plasma humain. Elle porte encore sur un implant constitué d'une telle composition.
Abstract:
The invention relates to yarns, fibres and filaments which are made from thermoplastic materials and to the production method thereof. More specifically, the invention relates to yarns, fibres and filaments with high fire-resistance properties and to the methods of producing said articles. According to the invention, the yarns and fibres are made from a polymeric material and are obtained by spinning a polymeric material containing an additive with fire retardant properties, said additive comprising at least particles from a solid substrate on which a fire retardant compound is absorbed.
Abstract:
An optical multilayer film comprising a hard coat layer and a low refractive index layer of aerogel formed, in this order, directly or through a different layer on one surface of a basic material film containing transparent resin, and satisfying following expressions [1], [2] and [3], where nH is the refractive index of the hard coat layer and nL is the refractive index of the low refractive index layer. Expression [1]: nL =1.53 Expression [3]: √nH-0.2
Abstract:
According to the invention we provide a process for filling or lining the pores of a porous silicon, silica or alumina substrate with a material which exhibits voltage-dependent index of refraction n comprising providing precursors for the deposited material as a precursor solution, forming a fine mist of droplets of precursor solution and applying the droplets to the porous substrate. The invention provides for the first time porous silicon, silica and alumina substrates having fill fraction at least 60%. Fill fractions of close to 100% can be achieved. When provided with top and bottom electrodes, filled porous silicon, silica and alumina wafers can be used as voltage-dependent photonic devices. The same process can be used for lining trenches in the surface of a silicon substrate, for instance for use in production of microelectronic devices such as random access memories.