Resources Contact Us Home
Negative coefficient of thermal expansion particles

Image Number 2 for United States Patent #8119206.

A method of forming a negative coefficient of thermal expansion particle includes flattening a hollow sphere made of a first material, annealing the flattened hollow sphere at a reference temperature above a predetermined maximum use temperature to set a stress minimum of the flattened hollow sphere, and forming a coating made of a second material on the flattened hollow sphere at the reference temperature, the second material having a lower coefficient of thermal expansion than that of the first material, the negative coefficient of thermal expansion particle characterized by volumetric contraction when heated.

  Recently Added Patents
Method for transmitting feedback information and data using a precoding codebook for multicell cooperative communication in a wireless communication system
Method and apparatus for training a probe model based machine vision system
Storage managing system, computer system, and storage managing method
Method and system for detecting reducer fault
Light-stabilized soft capsule formulations
Equalizer tap correction and reseeding
Electronic endoscope signal-processing device and electronic endoscope system
  Randomly Featured Patents
Method and apparatus for cleaning a conveyor belt
Rotor for an axial flow rotary separator
Automatically addressable configuration system for recognition of a motion tracking system and method of use
Content usage rule management system
Compression of stereoscopic images
Etoposide preparations
Telephone subscriber accomodation system in a broadband network
Self refresh oscillator and oscillation signal generation method of the same
Process for the automated winning of mineral, such as coal, in a longwall working
Multi-tool protection device