摘要:
A method for making conjugated polymers. The method includes flash evaporating a conjugated material forming an evaporate, passing the evaporate to a glow discharge electrode creating a glow discharge conjugated material plasma from the evaporate, and cryocondensing the glow discharge conjugated polymer precursor plasma on a substrate as a condensate and crosslinking the condensate thereon, the crosslinking resulting from radicals created in the glow discharge conjugated material plasma.
摘要:
The invention relates to a method for applying a non-permeable, ceramic layer of a thickness of not more than about 100 &mgr;m to a ceramic or metallic body by applying a solution of one or more elastomers, which elastomers contain substantially not exclusively sulfur, carbon, hydrogen and oxygen, optionally drying, and pyrolyzing to form a porous layer and subsequently sintering at increased temperature to form a non-permeable ceramic layer.
摘要:
A protective coating and coating method for protecting a thermal barrier coating (TBC) on a component, such as a component of a gas turbine engine. The protective coating comprises alumina particles in a silica-containing matrix, and may be substantially homogeneous or formed of multiple layers having different compositions. The composition and relative amounts of alumina and matrix material in the protective coating enable the coating to react with molten compounds containing calcia, magnesia, alumina and/or silica (CMAS), forming a compound with a melting temperature that is significantly higher than CMAS. As such, infiltration of molten CMAS into the TBC is significantly reduced or entirely avoided.
摘要:
The present invention is directed to a process for obtaining a substrate provided with a coating having photocatalytic properties, wherein the coating includes crystallized particles of an oxide of a metal A having photocatalytic properties. The crystallized particles are incorporated into the coating using a mineral binder comprising at least one oxide of a metal B also having photocatalytic properties in the crystallized state. The coating optionally includes at least oxide of a metal M devoid of photocatalytic properties and/or at least one silicon compound of the silicon oxide SiO2 type. The coating is deposited from liquid-phase dispersions containing the crystallized particles of the oxide of metal A and at least one precursor compound for the oxide of metal B of the binder and optionally a precursor compound for the oxide of metal M and for the Si compound, in a relative proportion A/(B+M+Si) by weight of the metals and Si ranging between 60/40 and 40/60. The present invention is also directed to substrates containing a photocatalytic coating and to liquid-phase dispersions which are used in the preparation of the photocatalytic coatings.
摘要:
Improved articles of manufacture are disclosed, together with methods for preparing such articles, whereby the surface of a graphite or comparable substrate is first densified with carbon to reduce surface porosity while still retaining sufficient surface texture to enhance the adherence of a subsequently applied boron coating.
摘要:
This invention relates to novel vitreous microlenses and optical filters and methods for their formation. This includes formation of inorganic oxide microlenses and optical filters on other objects, including the production of oxide glasses in various shapes. For example, the present invention is directed to the use of precursor materials such as carboxylated polysiloxanes, including carboxylated polygermanosiloxanes in the hydrogen or fully or partially metal ion exchanged forms to produce the vitreous microlenses and optical filters of the invention.
摘要:
A brake unit includes a brake disc of a ceramic material and a brake pad that cooperates with it in tribological fashion. The brake pad is made of a sintered metal material or of an inorganically bound material having a ceramic binding phase and metal particles. The brake unit has a high thermal loading capacity, very good performance characteristics in terms of comfort, and an acceptable service life.
摘要:
A coated article suitable for use at elevated temperature is formed of a substrate made from metal or a ceramic, a diffuse reflective barrier coating overlying the substrate, and a low-emissivity top coat covering the diffuse reflective barrier coating. The diffuse reflective barrier coating includes a transmissive medium having a transmissive-medium index of refraction, and a plurality of radiation-scattering centers distributed in the transmissive medium, the radiation-scattering centers having a scattering-center index of refraction different from the transmissive-medium index of refraction. The radiation scattering centers may be voids or second ceramic particles. The diffuse reflective barrier coating has a surface roughness of less than about 150 microinches RMS.
摘要:
Multi-functional materials which have a photocatalytic layer with a photocatalytic function disposed on the surface of a base through an amorphous binder layer 6 interposed therebetween. Photocatalytic particles of the photocatalytic layer are joined together by a surface energy or solid-state sintering. The photocatalytic layer may have a structure in which fine particles fill interstices defined between photocatalytic particles or a structure in which no fine particles fill interstices defined between photocatalytic particles. A metal such as Ag, Pt, or the like may be fixed or not fixed to surfaces of the photocatalytic particles. A lower layer of the photocatalytic layer is embedded in the binder layer such that an intermediate layer is formed between the binder layer and the photocatalytic layer, the intermediate layer including components of the binder and photocatalytic layers in varying concentrations therethrough.
摘要:
The invention is a method of plating a nonmetallic substrate comprising the steps of depositing an adhesion enhancing film on the substrate, treating the adhesion enhancing film to make the film catalytic, and forming an outer coating and passivating plate on the adhesion enhancing film. The resulting plated, nonmetallic substrates may comprise any number of materials used as an inner substrate such as compounds of oxide, nitride, phosphide, carbide, glass, ceramic, and mixtures thereof. In use, the resulting substrate may find application in any number of data storage and retrieval application.