Preparing method of superfine M1-xTixB2 powder

Preparing method of superfine M1-xTixB2 powder

  • CN 106,517,225 A
  • Filed: 11/15/2016
  • Published: 03/22/2017
  • Est. Priority Date: 11/15/2016
  • Status: Active Application
First Claim
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1. a kind of ultra-fine M1-xTixB2Raw powder'"'"'s production technology, it is characterised in that with MO2Powder body, TiO2It is raw material with boron, by twoStep heat preservation method, synthesizes M1-xTixB2Powder body, wherein M=Zr, Hf, comprise the following steps that:

  • 1) by TiO2Powder body mixes MO2Powder body obtains mixing MO2-TiO2Powder body, wherein TiO2Powder body molar fraction x be 0.5%~

    20%, then by MO2-TiO2Powder body and pure boron powder body press 1;

    2.5~

    1;

    5 molar ratio dispensing ball milling mixing, obtains after being driedMO2-TiO2- B mixed powders, then by MO2-TiO2- B mixed powders are placed in graphite crucible, are less than 200Pa or inertia in air pressureFirst step low-temperature insulation is carried out under atmosphere, and holding temperature is 800-1200 DEG C, obtains M1-xTixB2-B2O3Powder body;

    2) by the M for obtaining1-xTixB2-B2O3Powder body is less than under 200Pa or inert atmosphere in air pressure and continues to heat up, and carries out second step highTemperature insulation, holding temperature is 1300-1800 DEG C, obtains M1-xTixB2Powder body.

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