Self-diffusion gradient functional compound cutting tool material and preparation method thereof
A gradient function and compound cutting tool technology, which is applied in the direction of chemical instruments and methods, metal layered products, layered products, etc., can solve the problem that interlayer damage is not easy to control, and achieve low cost, strong resistance to crack growth, and easy The effect of industrialization
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Embodiment 1
[0026]A preparation method of self-diffusion gradient functional composite tool material:
[0027] (1) 9wt% nano-Ni powder, 3wt% nano-Mo powder, 15wt% WC ultrafine powder and 73wt% ultrafine Ti(C 5 N 5 ) powder is put into a ball mill barrel filled with cemented carbide balls, placed on a ball mill for ball milling for 48 hours, then dried and sieved with a 200-mesh sieve to obtain a surface layer composite powder for subsequent use;
[0028] (2) 6.5wt% nano-Ni powder, 18.0wt% Al 2 o 3 Powder, 1.6wt% superfine VC powder, 73.9wt% TiB 2 - TiC eutectic powder is distributed into a ball mill barrel filled with alumina balls, placed on a ball mill for 48 hours, dried and sieved with a 200-mesh sieve to obtain a matrix composite powder for future use;
[0029] (3) First use an electronic balance to weigh a little surface composite powder and place it in a graphite mold for compaction, then weigh the matrix composite powder and place it on the compacted surface composite green bo...
Embodiment 2
[0033] The tool material composition and sintering atmosphere are shown in Table 1, the mechanical properties are shown in Table 2, and other process conditions are the same as in Example 1.
Embodiment 3
[0035] The tool material composition and sintering atmosphere are shown in Table 1, the mechanical properties are shown in Table 2, and other process conditions are the same as in Example 1.
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