Method for preparing aluminum oxide dispersion strengthening copper alloy powder

Method for preparing aluminum oxide dispersion strengthening copper alloy powder

CN
  • CN 103,934,451 A
  • Filed: 04/03/2014
  • Published: 07/23/2014
  • Est. Priority Date: 04/03/2014
  • Status: Active Application
First Claim
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1. a preparation method for alumina dispersion-strenghtened copper alloyed powder, is characterized in that concrete steps are as follows:

  • 1) stearic acid of the copper-aluminium alloy powder that is 0.5 ~ 5% by aluminium mass content and its quality 0.2 ~ 0.3%, by ratio of grinding media to material 8 ~ 10;

    1,300 ~ 400 revs/min, at 2 ~ 10 DEG C of environment temperatures, ball milling 5 ~ 10 hours, in whole mechanical milling process, can free in and out air;

    2) in the copper-aluminium alloy powder after ball milling, add the Cu of its quality 1 ~ 1.5% 2o powder, mixes 4 ~ 8 hours;

    3) powder mixing is placed in vacuum drying oven, is evacuated to-0.08 ~-0.1MPa, then fills N 2to-0.03 ~-0.02MPa, then rise to 900 ~ 950 DEG C with 5 ~ 10 DEG C/min of heating rates, be incubated and cool to room temperature with the furnace after 1 ~ 2 hour;

    4) material that broken step 3 obtains, and cross 80 mesh sieves, the powder sieving is placed in to tube furnace, at H 2in atmosphere, rise to 700 ~ 900 DEG C with 5 ~ 10 DEG C/min of heating rates, be incubated and cool to room temperature with the furnace after 1 ~ 4 hour, obtain high-load alumina dispersion-strenghtened copper alloyed powder of the present invention.

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