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
Image forming apparatus having exhaust fan
Electrode composition with enhanced performance characteristics
Account managing device, image processing system, and storage medium
Registry key federation systems and methods
Data communication apparatus, method of controlling the same, program, and storage medium
Application authentication system and method
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
  Randomly Featured Patents
Printing ink composition
Notebook computer
Terpene resin-and hydrocarbon resin-based surfactants and aqueous dispersion of tackifier resins
Optical fiber and fibre-optic cable comprising at least one intermetallic element that absorbs hydrogen
Airflow system for ink-jet printer
Bis-maleimide resin composition
Methods and apparatus for rapidly rendering photo-realistic surfaces on 3-dimensional wire frames automatically using user defined points
Heating or air-conditioning ventilation unit for motor vehicles
Regenerator and regenerative material used therein
Interlayer composite structure for laminated glass with controlled bonding between the layers and the process for the production of the interlayer structure