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
Electric rice cooker
Two-port memory implemented with single-port memory blocks
Composite membrane including coating of polyalkylene oxide and triazine compounds
Industrial turbine blade with platform cooling
Fluid dispenser member
Multiple purpose tandem nested projectile
Apparatus and method for boosting output of a generator set
  Randomly Featured Patents
Reducible metal oxide compositions containing zirconium
Fast and compact circuit for bus inversion
Video special effect generator
Ball bearing inspection apparatus
Lock portion with piezo-electric actuator and anti-tamper circuit
Radio frequency identifiers in game tickets
Method and system for air-conditioning a coating station for a paper web or equivalent
Universal sulky hitch
Oil-ring including two rail rings and an expander-spacer ring which bites into the rail ring
Flexible conduit system