Article: Investigators at Yan'an University release new data on powder technology.

According to a study from People's Republic of China, "The well distributed open cellular porous copper was fabricated by present powder metallurgy technique based on space holder method, Depending on the volume fraction and size of the space holding particle, the porosity can be varied in the wide range of 30-85% and pore size from micron to millimetre in magnitude of order respectively."

"The damping behaviour and related relative dynamic modulus of the porous copper were investigated by a multifunction internal friction apparatus as a function of temperature from room temperature to 600 degrees C. The results of investigation disclose that the porous copper ...

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