Nano hard alloy material containing spherical face-centered cubic structure cobalt powder and preparation process thereof
A technology of cubic structure and hard alloy, which is applied in the field of hard alloy materials containing spherical face-centered cubic cobalt powder and its preparation, can solve the problems of lack of performance, small gaps, and difficult formation of cobalt pools, etc., to make up for brittleness, The effect of small pores and inhibition of grain growth
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[0021] Example 1
[0022] (1) Weigh 180g of 350nm tungsten carbide-titanium carbide-vanadium carbide-tantalum carbide-chromium carbide solid solution powder, and then respectively weigh 1.5wt% of the surfactant cetyltrimethylammonium bromide of the total mass of the above drugs Mix with cerium oxide, use alcohol as the ball milling medium, use WC-Co cemented carbide balls as the grinding body, and carry out high-speed ball milling (the ratio of ball to material is 1:6), the milling speed is 500 rpm, and the milling time is 12 hours;
[0023] (2) Weigh 120g of Co powder (250nm) and 700g of WC powder (200nm) respectively, and add them to the ball mill completed by pre-ball milling the solid solution (according to the ratio of ball to material ratio of 1:4 and 0.5~0.6L / Kg alcohol volume to add alloy Ball and appropriate amount of alcohol, and 2% paraffin wax with raw material weight ratio), then vacuumize the ball mill tank and fill it with nitrogen, then seal it and continue high-spe...
Example Embodiment
[0027] Example 2
[0028] (1) Weigh 150g of 300nm tungsten carbide-titanium carbide-vanadium carbide-tantalum carbide-chromium carbide solid solution powder, and then respectively weigh 2.0wt% of the surfactant cetyltrimethylammonium bromide of the total mass of the above drugs Mix with cerium oxide, use alcohol as the ball milling medium, use WC-Co cemented carbide balls as the grinding body, and carry out high-speed ball milling (the ratio of ball to material is 1:6), the milling speed is 500 rpm, and the milling time is 12 hours;
[0029] (2) Weigh 140g of Co powder (200nm) and 710g of WC powder (200nm) respectively, and add them to the ball mill completed by pre-ball milling the solid solution (according to the ratio of ball to material ratio of 1:4 and 0.5~0.6L / Kg alcohol amount to add alloy Ball and appropriate amount of alcohol, and 2% paraffin wax with a raw material weight ratio), then vacuumize the ball mill tank and fill it with nitrogen, then seal it and continue high-s...
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