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
Debugging a computer program by interrupting program execution in response to access of unused I/O port
Apparatus and method for composing scenes using Rich Media contents
Descriptor storage and searches of k-dimensional trees
Methods and arrangements for effecting supplementary mail transfer or management
Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment
Measurement of geometric quantities intrinsic to an anatomical system
Communication device sensor assembly
  Randomly Featured Patents
Automatic generation of where-used information
Droplet ejection apparatus including recovery processing with a standby power supply
Method of applying partial reverse mask
Synthetic ammonia process
Substrate processing apparatus and method for fabricating semiconductor device
Vehicle rear light unit
Multiple use shelf for cooler
Gas flow proportioning and controlling valve system
Terpolymers with improved heat distortion resistance
Synchronization of a two-channel audio decoder with a multichannel audio decoder