Titanium-nickel-carbon reacting spraying composite powder and preparation thereof
A composite powder and carbon-based technology, applied in metal material coating process, coating, molten spraying, etc., can solve the problems of low carbonization temperature, high carbon purity, and low pollution, and achieve low carbonization temperature and high carbon purity , the effect of little pollution
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[0019] The raw materials used in the invention are Ni powder, O powder, alloy element powder and sucrose. The composition of the prepared Ti-Ni-C reaction spraying composite powder is shown in Table 1.
[0020] The specific process flow is:
[0021]1. Mix the raw material powder according to the distribution ratio, and then wet-grind on a ball mill for 24 to 72 hours. The volume ratio of the steel ball to the raw material mixture is 3:1, the ball mill speed is 120r.p.m, and the ball milling medium is alcohol;
[0022] 2. Dry the mixed slurry after ball milling in a drying box, the drying temperature is 50℃, and the drying time is 12 hours;
[0023] 3. Put the dried block material into the burning boat, and then carry out carbonization treatment in a nitrogen-protected heat treatment furnace. First, remove hydrogen and oxygen at 250°C for 1.5 hours. Then the temperature was raised to 350°C to continue the carbonization treatment for 2 hours;
[0024] 4. The porous block solid ob...
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