Abstract:
The present invention relates to a powder including hexagonal boron nitride particles and metallic particles. The metallic particles are attached to at least a portion of a surface of the hexagonal boron nitride particles. The present invention further relates to cosmetic compositions, polymer blends, thermal management compositions, and catalyst compositions including the powder and methods of making the powder.
Abstract:
New ceramic heating elements are provided that have a recessed portion for receiving an electrical lead. Such ceramic heating elements can provide a reduced cross-sectional dimension across element regions that interface with electrical lead(s) as well as a more secure engagement of an electrical lead. Heating elements can be highly useful in a variety of application, including e.g. for fuel ignition for gas cooking appliances as well as vehicular glow plugs.
Abstract:
New methods are provided or manufacture ceramic resistive igniter elements that include sintering of the elements in the absence of substantially elevated pressures. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.
Abstract:
The invention provides new methods for manufacture ceramic resistive heating elements that include forming a heating element body comprising comprises two or more regions of differing resistivity, and processing a portion of the element body to form a heating element. Heating elements such as igniters and glow plugs also are provided obtainable from fabrication methods of the invention.
Abstract:
The invention provides new ceramic resistive heating elements and new methods for manufacturing ceramic resistive heating elements wherein the heating element body comprises two or more regions of differing resistivity, and wherein the heating elements are open face. Heating elements such as igniters and glow plugs also are provided obtainable from fabrication methods of the invention.
Abstract:
New methods are provided for manufacture ceramic elements that include injection molding of two, three or more distinct ceramic layers or regions that form the element. Ceramic elements also are provided that are obtainable from fabrication methods of the invention.
Abstract:
New methods are provided or manufacture ceramic resistive igniter elements that include sintering of the elements in the absence of substantially elevated pressures. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.
Abstract:
New ceramic resistive igniter elements (10)are provided that comprise a first conductive zone (12), a resistive hot Zone (14), and a second conductive zone (16), all in electrical sequence. In preferred igniters, at least a substantial portion of the first conductive zone does not contact a ceramic insulator. Preferred igniters of the invention have a rounded cross-sectional shape for at least a portion of the igniter length.
Abstract:
New methods are provided for manufacture ceramic resistive igniter elements that include injection molding of one or more layers of the formed element. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.
Abstract:
The present invention relates to a powder including hexagonal boron nitride particles and metallic particles. The metallic particles are attached to at least a portion of a surface of the hexagonal boron nitride particles. The present invention further relates to cosmetic compositions, polymer blends, thermal management compositions, and catalyst compositions including the powder and methods of making the powder.