Cutting tip of metal ceramic based on titanium carbonitride toughened by crystal whisker, and preparation method
A technology of titanium carbonitride and cutting blades, which is applied in the field of tool making materials, can solve the problems of inferior bending strength and impact toughness, low friction coefficient, etc., and achieve the effects of high strength, good wear resistance and high toughness
Examples
Embodiment 1
[0017] Weigh the weight of titanium carbonitride and SiC whisker respectively, and the weight ratio of titanium carbonitride and SiC whisker is 70:30; put SiC whisker into the mixture of polar solvent ethanol and dispersant, through mechanical Stirring and ultrasonic vibration are made into a suspension solution to ensure that the SiC whiskers are stably dispersed for later use; the percentage of weight [Ti (CN) and SiC whisker weight sum] added to titanium carbonitride is 17.8% Mo, 20 % Ni, 13% Co, 10.5% Ta, 43.5% TiC, 27% WC, 16% NbC, and mixed wet grinding for 80 hours; the wet ground mixture was then mixed with the dispersed The SiC whiskers are uniformly mixed, then pressed into shape, and vacuum sintered at a temperature of 1460 °C. The mechanical properties of the product are tested, and the results are as follows: the bending strength is 1600MPa, the fracture toughness is 13.8MPa.ml / 2, and the hardness is HAC94.5.
Embodiment 2
[0019] Weigh the weight of titanium carbonitride and SiC whisker respectively, the weight ratio of titanium carbonitride and SiC whisker is 65:35, put SiC whisker into the mixture of polar solvent ethylene propanol and dispersant, through Mechanical agitation and ultrasonic vibration are made into a suspension solution to ensure that the SiC whiskers are stably dispersed for later use; in titanium carbonitride, the percentage of weight [Ti (CN) and SiC whisker weight sum] is 19.5% Mo, 22% of Ni, 12.6% of Co, 10.8% of Ta, 42% of TiC, 27% of WC, 17% of NbC, and mixed wet grinding for 90 hours; the mixture after wet grinding was mixed with The dispersed SiC whiskers are uniformly mixed, then pressed into shape, and vacuum sintered at a temperature of 1510°C. The mechanical properties of the product are tested, and the results are as follows: the bending strength is 1620MPa, the fracture toughness is 14.2MPa.ml / 2, and the hardness is HAC94.2.
Embodiment 3
[0021] Weigh the weight of titanium carbonitride and SiC whisker respectively, the weight ratio of titanium carbonitride and SiC whisker is 76:24, put the SiC whisker into the mixture of water and dispersant, through mechanical stirring and ultrasonic wave Oscillate to make a suspension solution to ensure that the SiC whiskers are stably dispersed and ready for use; add the weight [Ti(CN) and SiC whisker weight sum] to titanium carbonitride, the percentage is 17% Mo, 20% Ni , 13% Co, 11.6% Ta, 40.2% TiC, 25% WC, 19% NbC, and mixed wet milling for 90 hours; the wet milled mixture was mixed with the dispersed SiC crystal It must be uniformly mixed, then pressed into shape, and vacuum sintered at a temperature of 1570°C. The mechanical properties of the product are tested, and the results are as follows: the bending strength is 1590MPa, the fracture toughness is 13.2MPa.lm / 2, and the hardness is HAC93.5.
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Abstract
Description
Claims
Application Information
- IPC
- C04B35/58; C04B35/56; C04B35/563; C04B35/81; C04B35/63; C04B35/64; C04B35/622
- Inventors
- 丁燕鸿