Gas Research Institute

Sri International

The United States of America As Represented by the Administrator of the

The United States of America As Represented by the Administrator of

Stc Technologies Inc.

David M Lowe

Angel Sanjurjo

Kai-Hung Lau

Palitha Jayaweera

Demetrius A Kourtides

Naixiong Jiang

Eric D Wachsman

Bruce G Pound

Liqiang Jiang

Luke V Schneider

Keith W Kardos

Marie Johansson

Rex A Churchward

Robert T Rewick

Naheed Mufti

Victor Wong

Anastasia Canizales

A method for coating stainless steel in which a metallic material layer of Cr and alloys of Cr and at least one of Mo, W, Ni, Si, Ti, Zr is deposited onto a metal substrate. The metallic material layer is then annealed so as to form a diffusion layer between the metallic protective coating and the metal substrate. Thereafter, the metallic material layer may be passivated, forming a stable composition of at least one of carbides, borides, nitrides, silicides, oxides, and mixtures thereof on the metallic protective coating. The protective coatings of this invention significantly reduce the corrosion rate of stainless steel used in bromide-based absorption systems.

Corrosion-resistant coatings for steels used in bromide-based absorption cycles

The invention relates to a method for producing activated, substantially monodisperse, phosphorescent particles and particles formed thereby. The method suspends substantially monodisperse, phosphor-precursor particles in a fluidizing gas and then introduces a reactive gas to contact the suspended phosphor-precursor particles. Heating the suspended phosphor-precursor particles to a reaction temperature then forms unactivated phosphorescent particles. In another embodiment, the phosphor-precursor particles may be heated to a reaction temperature where they decompose to form the unactivated phosphor particles. The unactivated phosphorescent particles suspended within the fluidizing gas are activated by heating the unactivated phosphorescent particles to an activation temperature forming activated, substantially monodisperse, phosphorescent particles.

Production of substantially monodisperse phosphor particles

Stable high conductivity functionally gradient compositionally layered solid bodies suitable for use as electrolytes and membranes and providing improved oxygen-ion conductivity for electrolytes and improved mixed oxygen-ion and electronic conductivity for membranes. The electrolytes provide solid oxide fuel cells with high efficiency operation at 300.degree. to 800.degree. C.

Stable high conductivity functionally gradient compositionally layered

A fluidized-bed reactor for the chemical vapor deposition of a coating on a substrate surface is described. The reactor enables high rates of deposition and a highly homogeneous coating by modifying the boundary layer formed between the gasified reactive gas stream and the substrate. The boundary layer is minimized by the presence of an exhaust outlet placed in close proximity to the center of the surface of the substrate and/or the presence of a gas inlet capable of injecting a tangential stream of gas which results in a swirling radial flow of reactive gas. Methods of forming a metal coating on a surface of a substrate using the reactor are provided as well.

Fluidized bed reactor to deposit a material on a surface by chemical

A protective coating for ceramic materials such as those made of silicon carbide, aluminum oxide, zirconium oxide, aluminoborosilicate and silicon dioxide, and a thermal control structure comprising a ceramic material having coated thereon the protective coating. The protective coating contains, in admixture, silicon dioxide powder, colloidal silicon dioxide, water, and one or more emittance agents selected from silicon tetraboride, silicon hexaboride, silicon carbide, molybdenum disilicide, tungsten disilicide and zirconium diboride. In another aspect, the protective coating is coated on a flexible ceramic fabric which is the outer cover of a composite insulation. In yet another aspect, a metallic foil is bonded to the outer surface of a ceramic fabric outer cover of a composite insulation via the protective coating. A primary application of this invention is as a protective coating for ceramic materials used in a heat shield for space vehicles subjected to very high aeroconvective heating environments.

Protective coating for ceramic materials

An improved composite flexible blanket insulation comprising top silicon carbide having an interlock design, wherein the reflective shield is composed of single or double aluminized polyamide and wherein the polyamide film has a honeycomb pattern.

Composite flexible blanket insulation

Growing community of inventors

Hayward, CA, United States of America

David M Lowe