Abstract: A method of making a glass composition consisting essentially by mol percent of about 55<SiO2<75; 5<BaO<30; and 2<MgO<22 for use as a matrix of composite materials. A method of making a glass matrix-ceramic particulate composition useful for sealing electrochemical structures, such as solid oxide fuel cells is also disclosed. Method steps include the admixture of finely divided Mg2SiO4 particulates with the matrix glass, to reach an overall composition by mol percent of about 55<SiO2<65; 5<BaO<15; and 25<MgO<35.

Abstract: A glass composition consisting essentially by mol percent of about 55<SiO2<75; 5<BaO<30; and 2 <MgO<22 for use as a matrix of composite materials. A method of making a glass matrix-ceramic particulate composition useful for sealing electrochemical structures, such as solid oxide fuel cells is also disclosed. Method steps include the admixture of finely divided Mg2SiO4 particulates with the matrix glass, to reach an overall composition by mol percent of about 55<SiO2<65; 5<BaO<15; and 25<MgO<35.

Abstract: A polymeric binder system and method of making, and a method for extruding thin-walled articles such as thin-walled tubes is provided. The extrusion method comprises providing a polymeric binder system comprising a substantially homogeneous solution of a polymeric binder and an organic solvent, adding a ceramic or metal powder to form a mixture, and evaporating the solvent from the mixture. The remaining mixture is then extruded from a die and heated to burn-off the binder and sinter the article.

Abstract: A gaseous flow sensor that utilizes non-platinum resistive sensing elements and a method for fabricating such sensor are disclosed. The gaseous flow sensor is constructed by an insulating substrate; a reference resistor formed on the substrate and disposed in the gaseous flow at an ambient temperature without heating; a flow-sensing resistor formed on the substrate disposed in the gaseous flow that is heated to a temperature higher than the ambient temperature; and an electrical circuit in electrical communication with the reference resistor and the flow-sensing resistor for feeding a current into the flow-sensing resistor in order to keep the two resistors at the same temperature during the operation of the gaseous flow sensor.

Abstract: A gaseous flow sensor that utilizes non-platinum resistive sensing elements and a method for fabricating such sensor are disclosed. The gaseous flow sensor is constructed by an insulating substrate; a reference resistor formed on the substrate and disposed in the gaseous flow at an ambient temperature without heating; a flow-sensing resistor formed on the substrate disposed in the gaseous flow that is heated to a temperature higher than the ambient temperature; and an electrical circuit in electrical communication with the reference resistor and the flow-sensing resistor for feeding a current into the flow-sensing resistor in order to keep the two resistors at the same temperature during the operation of the gaseous flow sensor.

Abstract: A polymeric binder system and method of making, and a method for extruding thin-walled articles such as thin-walled tubes is provided. The extrusion method comprises providing a polymeric binder system comprising a substantially homogeneous solution of a polymeric binder and an organic solvent, adding a ceramic or metal powder to form a mixture, and evaporating the solvent from the mixture. The remaining mixture is then extruded from a die and heated to burn-off the binder and sinter the article.

Abstract: A glass composition consisting essentially by mol percent of about 55<SiO2<75; 5<BaO<30; and 2 <MgO<22 for use as a matrix of composite materials. A method of making a glass matrix-ceramic particulate composition useful for sealing electrochemical structures, such as solid oxide fuel cells is also disclosed. Method steps include the admixture of finely divided Mg2SiO4 particulates with the matrix glass, to reach an overall composition by mol percent of about 55<SiO2<65; 5<BaO<15; and 25<MgO<35.

Abstract: The present invention is a method for the manufature of a membrane structure for use in electrochemical conversions.

Abstract: Method of surface finishing covalent-ionic ceramics comprising: (a) repeatedly rubbing a finishing medium against an exposed surface of the ceramic, the medium being constituted of an ionic bonded oxide having grains harder than the grains of the covalent-ionic bonded ceramic; (b) interrupting the rubbing at frequent intervals to dress the medium by a single point diamond tool; and (c) continuing the repeated rubbing and dressing interruptions of steps (a) and (b) until a surface roughness of about 0.04 micrometer Ra has been achieved on the ceramic and the exposed surface of the ceramic retains an ionic residue of the finishing medium. Also, a method of effecting reduced friction between lubricated rubbing surfaces, comprising: (a) forming one of the rubbing surfaces of silicon nitride based ceramics having a polished surface roughness about 0.

Abstract: This invention is directed to metal-matrix composites which include a substantially continuous phase of metal and reinforcing ceramic particulate substantially uniformly dispersed therein and comprising at least two of barium titanium, titanium dioxide, and titanium nitride. The composite may include other reinforcing ceramic particulate materials like metal carbides such as titanium carbide and other titanates like calcium titanate. The reinforcing particulate can comprise up to about 70 volume percent of the composite and have an average particle diameter of between about 0.1 micron and 100 microns. In forming the composite, the metal powder employed has an average particle diameter between about 1 and 20 microns. The composite is useful to manufacture, e.g., automotive parts such as brake rotors and structural components.