Mechanical activation-reaction heat treating preparation process of nanometer titanium carbonitride
A titanium carbonitride nanometer, mechanically activated technology, applied in nitrogen compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of limited large-scale production, large product particle size, and high raw material cost, and achieve industrial-scale production. , good dispersion, cheap raw materials
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Embodiment 1
[0032] In the present embodiment, raw material is nano-titanium oxide and nano-carbon powder, has the following process steps according to process flow chart 1:
[0033] (1) Ingredients
[0034] The mol ratio of nanometer carbon powder and titanium oxide is 2.5: 1;
[0035] (2) Mechanical activation
[0036] The raw materials are activated by high-energy mechanical ball milling, the weight ratio of balls to materials is 30:1, the medium is absolute ethanol, the speed of the ball mill is 700 rpm, and the ball milling time is 4 hours;
[0037] (3) dry
[0038] Dry the wet abrasive at 70°C for 24 hours;
[0039] (4) Loading
[0040] Weigh 10g of activation material and put it into the crucible of carbon tube furnace;
[0041] (5) Reactive heat treatment
[0042] Evacuate the carbon tube furnace to a vacuum of 2.0×10 -2 At MPa, start heating at 20°C / min, keep warm at 900°C for 5 minutes, and pass nitrogen gas at the end of the heat preservation until the pressure is 0.005MP...
Embodiment 2
[0046] In the present embodiment, raw material is nano-titanium oxide and nano-carbon powder, has the following process steps according to process flow chart 1:
[0047] (1) Ingredients
[0048] The mol ratio of nanometer carbon powder and titanium oxide is 2.7: 1;
[0049] (2) Mixing
[0050] Perform high-energy mechanical ball milling activation (dry milling) on the prepared raw materials, the ball-to-material weight ratio is 30:1, the ball mill speed is 700 rpm, and the ball milling time is 2 hours;
[0051] (3) Loading
[0052] Weigh 10g of activated raw material and put it into the crucible of the carbon tube furnace;
[0053] (4) Reactive heat treatment
[0054] Fill the carbon tube furnace with nitrogen to a pressure slightly greater than 1 standard atmosphere, then flow nitrogen and heat at 15°C / min at the same time, keep warm for 2 hours after reaching 1250°C;
[0055] (5) Sieve
[0056] The reaction heat treatment product is sieved to obtain the product.
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