Tungsten carbide coated composite hard alloy material and preparation method thereof
A cemented carbide and tungsten carbide technology, which is applied in the field of composite cemented carbide materials and their preparation, can solve the problems of limited application, low strength and toughness, etc., and achieves the advantages of inhibiting grain growth, improving wear resistance and enhancing stability. Effect
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Embodiment 1
[0038] The base material of the composite cemented carbide coated with tungsten carbide in this embodiment is made from the following components in parts by weight:
[0039] 35 parts of nano-titanium carbide, 5 parts of nano-titanium nitride, 5 parts of niobium carbide, 3-7 parts of silicon carbide, 3 parts of cobalt powder, 1 part of yttrium oxide, 1 part of aluminum carbide, and 1 part of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.
[0040] Nano-titanium carbide, nano-titanium nitride, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, and titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere to obtain carbon-deficient alloy powder. ...
Embodiment 2
[0046] The composite cemented carbide material coated with tungsten carbide in this embodiment is made from the following components in parts by weight:
[0047] 40 parts of nano-titanium carbide, 15 parts of nano-titanium nitride, 9 parts of tungsten carbide, 8 parts of niobium carbide, 7 parts of silicon carbide, 5 parts of cobalt powder, 3 parts of yttrium oxide, 3 parts of aluminum carbide, and 5 parts of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.
[0048] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere. A carbo...
Embodiment 3
[0054] The composite cemented carbide material coated with tungsten carbide in this embodiment is made from the following components in parts by weight:
[0055] 37 parts of nano-titanium carbide, 10 parts of nano-titanium nitride, 8 parts of tungsten carbide, 7 parts of niobium carbide, 5 parts of silicon carbide, 4 parts of cobalt powder, 2 parts of yttrium oxide, 2 parts of aluminum carbide, and 3 parts of titanium powder. The particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the titanium powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the particle size of the niobium carbide, silicon carbide and aluminum carbide is 1.5 -3.5 μm.
[0056] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, aluminum carbide, titanium powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosphere. A carbo...
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