| 摘要 |
The present invention provides a gradient-functional metal ceramic composite material. The gradient-functional metal ceramic composite material includes a metal matrix, which is made of copper and aluminum, and copper-aluminum alloy, and ceramic particles of boron nitride, pyrolytic boron nitride, aluminum nitride or silicon carbide which are dispersed in the metal matrix. The ceramic particles form gradient distribution in a vertical direction of thickness in the metal matrix. The gradient continuously changes with a volume percentage of 10-60%. The present invention additionally provides a method for producing the gradient-functional metal ceramic composite material. The metal ceramic composite material of the present invention has appropriate thermo-conductivity and exhibits change of the gradient. Therefore, a deposition crucible, made of the metal ceramic composite material of the present invention can make an organic deposition material, placed in the crucible, be uniformly heated as the thermo-conductivity is distributed to correspond from a lower portion to an inlet and form an organic thin film with excellent quality after deposition. |
