Resources Contact Us Home
Boron carbide ceramic and manufacturing method thereof

Image Number 9 for United States Patent #7893000.

Boron carbide ceramics produced by spark sintering methods have more desirable mechanical properties than conventionally produced carbides. The boron carbide ceramics include amorphous boron, amorphous carbon, and Al.sub.2O.sub.3 powder as a sintering aid. The boron carbides may also contain a carbon nano fiber in a nearly homogeneously dispersed state. The sintered compact has a relative density of a boron carbide ceramic of approximately not less than 99%. The boron carbide ceramics are prepared preferably by subjecting a mixed powder of the starting raw materials and the carbon nano fiber to simultaneous synthesis and sintering using the spark plasma sintering method.

  Recently Added Patents
Stable aqueous composite compositions
Computer device with digitizer calibration system and method
Using sets of OTDR receive fibers with different lengths of marker events to verify optical fiber connectivity
Use of deuterium oxide for the treatment of virus-based diseases of the respiratory tract
Retrievable outgoing audio messaging
Method of manufacturing nitride semiconductor and nitride semiconductor element
Changing a system clock rate synchronously
  Randomly Featured Patents
Conversion of oxygenated compounds
Polyurethane foam, process for producing the same, and foam forming composition
Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine
Combination bearing for gas turbine engine
Multiple tuning circuit and probe having multiple tuning circuit for NMR spectrometer
Apparatus for making a composite roofing product
Imageable members with improved chemical resistance
Environmental sealing
Adaptive radio transceiver with floating MOSFET capacitors
Rotary mechanized tool