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Wear-resistance anti-corrosion Ti(C,N)-based metal ceramic and preparation method thereof

A metal-ceramic and corrosion-resistant technology, applied in the field of metal-ceramic material preparation, can solve the problems of easy wear and corrosion of metal-ceramic tool materials, and achieve the advantages of inhibiting grain growth, excellent corrosion resistance, and improving hardness and fracture toughness. Effect

Inactive Publication Date: 2020-04-14
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the cermet tool material is easy to corrode and wear during the service process, and propose a method with simple preparation process and excellent practical performance

Method used

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  • Wear-resistance anti-corrosion Ti(C,N)-based metal ceramic and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 65% (with a particle size of 0.8 microns), copper: 1% (with a particle size of 2.5 microns), cobalt: 5% (with a particle size of 2 Micron), nickel: 9% (particle size is 1.2 microns), molybdenum carbide: 10% (particle size is 3 microns), tungsten carbide: 10% (particle size is 1.2 microns)), the ball-to-material ratio in the planetary ball mill is 6: 1. Mixing and ball milling at a speed of 250 rpm for 48 hours to prepare an alloy powder mixture; after sieving, take particles with a particle size of 20-50 microns and mold them into compacts in a mold, and the molding pressure is 100 MPa; The compact obtained above was sintered in an argon atmosphere at a sintering temperature of 1500° C., an argon pressure of 3 MPa, and a sintering time of 1 hour. After cooling in a furnace, the cermet material of the embodiment of the present invention was obtaine...

Embodiment 2

[0034] Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 65% (with a particle size of 0.8 microns), copper: 2% (with a particle size of 2.5 microns), cobalt: 4% (with a particle size of 2 Micron), nickel: 9% (particle size is 1.2 microns), molybdenum carbide: 10% (particle size is 3 microns), tungsten carbide: 10% (particle size is 1.2 microns)), the ball-to-material ratio in the planetary ball mill is 6: 1. Mixing and ball milling at a speed of 250 rpm for 48 hours to prepare an alloy powder mixture; after sieving, take particles with a particle size of 20-50 microns and mold them into compacts in a mold, and the molding pressure is 100 MPa; The compact obtained above was sintered in an argon atmosphere at a sintering temperature of 1500° C., an argon pressure of 3 MPa, and a sintering time of 1 hour. After cooling in a furnace, the cermet material of the embodiment of the present invention was obtain...

Embodiment 3

[0036] Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 65% (with a particle size of 0.8 microns), copper: 0.5% (with a particle size of 2.5 microns), cobalt: 5.5% (with a particle size of 2 micron), nickel: 9% (particle size is 0.8 micron), molybdenum carbide: 10% (particle size is 3 micron), tungsten carbide: 10% (particle size is 1.2 micron)), the ball-to-material ratio in the planetary ball mill is 6: 1. Mixing and ball milling at a speed of 250 rpm for 48 hours to prepare an alloy powder mixture; after sieving, take particles with a particle size of 20-50 microns and mold them into compacts in a mold, and the molding pressure is 100 MPa; The compact obtained above was sintered in an argon atmosphere at a sintering temperature of 1500° C., an argon pressure of 3 MPa, and a sintering time of 1 hour. After cooling in a furnace, the cermet material of the embodiment of the present invention was obtai...

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Abstract

The invention relates to a wear-resistance anti-corrosion Ti(C,N)-based metal ceramic and a preparation method thereof. The metal ceramic is prepared from, by weight, 45-75% of titanium carbonitride powder, 0.5-3% of copper powder, 10-30% of an additive A and 10-20% of M, wherein the additive A contains at least one of tungsten carbide, molybdenum carbide and tantalum carbide; M contains at leastone of cobalt and nickel; the sum of the weight percentages of all the components is 100%. The preparation method of the metal ceramic comprises the steps that according to the designed materials of the metal ceramic, the raw materials are weighed respectively, a shaping agent is added, and after ball milling for mixing and uniform drying, the powder is pressed and shaped to obtain a compaction; the compaction is sintered in a protective atmosphere at high temperature and cooled to obtain the wear-resistance anti-corrosion titanium carbonitride-based metal ceramic, wherein during sintering, the temperature is controlled to be higher than 1350 DEG C.

Description

technical field [0001] The invention relates to a wear-resistant and corrosion-resistant cermet and a preparation method thereof; in particular to a method of preparing a copper-containing cermet by powder metallurgy to improve the corrosion resistance and wear resistance of Ti(C,N)-based cermet The method belongs to the technical field of cermet material preparation. Background technique [0002] Cermet materials are widely used in the field of wear-resistant parts and cutting tools. It is a heterogeneous composite material composed of metal or alloy and one or several ceramic phases, of which the latter accounts for about 35% to 80%. . During high temperature sintering, the solubility between the metal phase and the ceramic phase is very small. Ti(C,N)-based cermet is a new type of cermet developed on the basis of TiC-based cermet with low density, high hardness, excellent wear resistance and good toughness. The hard phase in the two-phase structure of the cermet is com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/04C22C1/05C22C1/10
CPCC22C1/051C22C29/005C22C29/04
Inventor 吝楠许里伟马超王祖勇
Owner HUNAN UNIV
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