High-obdurability Ti (C, N) base metal ceramic and preparation method thereof
A high-strength and toughness, base metal technology, applied in the field of high-strength and toughness Ti-based cermet and its preparation, can solve the problems of reducing the bending strength and hardness of the cermet, reducing the service life, reducing the wear resistance of materials, etc., and improving the durability. , improved service life, cost-effective effect
Active Publication Date: 2013-02-13
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The invention provides a high-obdurability Ti (C, N) base metal ceramic and a preparation method of the high-obdurability Ti (C, N) base metal ceramic. The high-obdurability Ti (C, N) base metal ceramic comprises the following components based on parts by weight: 7.0-8.7 of C, 3.0-3.9 of N, 35-44 of Ti, 22-32 of Ni, 12-18 of Mo, 5-8 of W, 0.5-2.0 of Cr and 1.0-2.5 of Nb, wherein 0.5-1.0 part of C is induced from a carbon nano-tube; and Ti is introduced from Ti (C, N) solid solution, and the solid solution consists of 70-90wt% of coarse grain (the grain size is 4-10mu m) and 10-30wt% of fine grain, wherein the size of the fine grain ceramic phase is 1/40-1/10 of the size of the coarse grain ceramic phase. The preparation method is characterized by comprising the following steps: firstly, carrying out surface modification treatment on the carbon nano-tube by plasma, carrying out ultrasonic dispersion, and adding into the mixture; and preparing the mixture which meets the components requirement, sequentially mixing materials, forming, degreasing to obtain a metal ceramic sintering body through a specific combined vacuum sintering method. According to the method, the metal ceramic is higher in rigidity, bending strength and breaking tenacity.
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