In-situ reaction synthesis method of TiC/Ni composite material
An in-situ reaction and composite material technology, applied in the field of composite materials, can solve problems such as high cost, complex process, and equipment limitations, and achieve the effects of increased density, uniform particle distribution, and simple process
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Embodiment 1
[0034] Embodiment 1: Taking the mass fraction of Ni as 60wt% of the total system as an example
[0035] ① Preparation of mixed powder: Ni powder (purity ≥ 99.9%, particle size 1-3 μm); Ti powder (purity ≥ 99.9%, particle size 1-3 μm); graphite powder (purity ≥ 99.9%, particle size 1-5 μm), three The seed powder and 3wt.% PVB are mixed evenly with a planetary ball mill using ethanol as a solvent;
[0036] ②Body preparation: put the mixed powder obtained in ① into a cylindrical mold with a diameter of 13.00mm, apply a pressure of 4-6MPa, prepare a cylindrical tablet sample with a diameter of 13.00mm, and perform cold isostatic Press molding to prepare green body.
[0037] ③Reaction sintering without pressurization: put the green body obtained in ② into a tube furnace, and pass it into atmospheric pressure argon for atmosphere protection, slowly raise the temperature at a heating rate of 1°C / min, and wait until the temperature in the furnace rises to 1300°C. The TiC / Ni composit...
Embodiment 2
[0041] Embodiment two: take the mass fraction of Ni as 40wt% of the total system as an example
[0042] ① Preparation of mixed powder: Ni powder (purity ≥ 99.9%, particle size 1-3 μm); Ti powder (purity ≥ 99.9%, particle size 1-3 μm); graphite powder (purity ≥ 99.9%, particle size 1-5 μm), three The seed powder and 3wt.% PVB are mixed evenly with a planetary ball mill using ethanol as a solvent;
[0043] ②Body preparation: put the mixed powder obtained in ① into a cylindrical mold with a diameter of 13.00mm, apply a pressure of 4-6MPa, prepare a cylindrical tablet sample with a diameter of 13.00mm, and perform cold isostatic Press molding to prepare green body.
[0044] ③Reaction sintering without pressurization: put the green body obtained in ② into a tube furnace, and pass it into atmospheric pressure argon for atmosphere protection, slowly raise the temperature at a heating rate of 1°C / min, and wait until the temperature in the furnace rises to 1300°C. The TiC / Ni composit...
Embodiment 3
[0048] Embodiment 3: Taking the mass fraction of Ni as 70wt% of the total system as an example
[0049] ① Preparation of mixed powder: Ni powder (purity ≥ 99.9%, particle size 1-3 μm); Ti powder (purity ≥ 99.9%, particle size 1-3 μm); graphite powder (purity ≥ 99.9%, particle size 1-5 μm), three The seed powder and 3wt.% PVB are mixed evenly with a planetary ball mill using ethanol as a solvent;
[0050] ②Body preparation: put the mixed powder obtained in ① into a cylindrical mold with a diameter of 13.00mm, apply a pressure of 4-6MPa, prepare a cylindrical tablet sample with a diameter of 13.00mm, and perform cold isostatic Press molding to prepare green body.
[0051] ③Reaction sintering without pressurization: put the green body obtained in ② into a tube furnace, and pass it into atmospheric pressure argon for atmosphere protection, slowly raise the temperature at a heating rate of 1°C / min, and wait until the temperature in the furnace rises to 1300°C. The TiC / Ni composit...
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