A kind of preparation method of alumina dispersion-strenghtened copper alloyed powder

A kind of preparation method of alumina dispersion-strenghtened copper alloyed powder

CN
  • CN 103,934,451 B
  • Filed: 04/03/2014
  • Issued: 01/27/2016
  • Est. Priority Date: 04/03/2014
  • Status: Active Grant
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) be the copper-aluminium alloy powder of 0.5 ~ 5% and the stearic acid of its quality 0.2 ~ 0.3% by aluminium mass content, by ratio of grinding media to material 8 ~ 10;

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

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

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

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

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