High-strength toughness titanium carbonitride base metal ceramic material and preparing method thereof

A technology of titanium carbonitride and ceramic materials, which is applied in the field of high-strength toughness cermet materials and their preparation, can solve problems such as insufficient strength and toughness, and achieve the effects of improving the holding effect, increasing the strength, and improving the wettability

Active Publication Date: 2018-03-23
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem that the present invention aims to solve is to propose a method of strengthening and toughening titanium carbonitride-based cermets with titanium carbonitride whiskers in view of the insufficient toughness of titanium carbonitride-based cermets in the cutting service process. Material

Method used

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  • High-strength toughness titanium carbonitride base metal ceramic material and preparing method thereof
  • High-strength toughness titanium carbonitride base metal ceramic material and preparing method thereof

Examples

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Effect test

Embodiment 1

[0038]Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 45% (with a particle size of 3 microns); cobalt: 9% (with a particle size of 2 microns); nickel: 9% (with a particle size of 2 microns); Micron); Tantalum carbide 8% (particle size is 3 microns), molybdenum carbide 7% (particle size is 2 microns), tungsten carbide: 17% (particle size is 2 microns)), in the planetary ball mill the ratio of ball to material is 6:1, Ball mill at a speed of 250 rpm for 46 hours and mix ball milling, add 5% titanium carbonitride whiskers (titanium carbonitride whisker diameter 1-2 μm, length 15-20 μm) dispersed with alcohol ultrasonic wave to the mixture and mix for 4 hours , to prepare the alloy powder mixture; in the obtained alloy powder mixture, add 2wt% of paraffin as a forming agent, stir evenly, sieve and take particles with a particle size of 20-50 microns and mold them into compacts in a mold. The molding pres...

Embodiment 2

[0040] Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 62% (with a particle size of 2 microns); cobalt: 5% (with a particle size of 1 micron); nickel: 5% (with a particle size of 1 micron); tantalum carbide 10% (particle size 2 microns), molybdenum carbide 5% (particle size 1 micron), tungsten carbide: 10% (particle size 1 micron)), the ratio of ball to material in the planetary ball mill is 7:1 , with ball milling at a speed of 200 rpm for 28 hours and mixing ball milling, 3% titanium carbonitride whiskers (titanium carbonitride whisker diameter 1-2 μm, length 15-20 μm) dispersed with alcohol ultrasonic waves were added to the mixture and mixed for 2 hours, the alloy powder mixture is prepared; in the obtained alloy powder mixture, add 3wt% paraffin as a molding agent, stir evenly, and after sieving, take particles with a particle size of 40-80 microns and mold them into compacts in a mold. The pre...

Embodiment 3

[0042] Weigh the raw materials according to the mass ratio of the designed cermet material components, (titanium carbonitride powder: 37% (with a particle size of 3 microns); cobalt: 10% (with a particle size of 2 microns); nickel: 10% (with a particle size of 2 microns); micron); tantalum carbide 8% (grain size is 2 microns), molybdenum carbide 7%, tungsten carbide: 20%), the ratio of ball to material in the planetary ball mill is 8:1, and the speed of ball milling at 280 rpm is mixed for 57 hours Ball milling, adding 8% titanium carbonitride whiskers (diameter of titanium carbonitride whiskers 1-2 μm, length 15-20 μm) dispersed with alcohol ultrasonic wave to the mixture and mixing for 3 hours to prepare alloy powder mixture; Add 2% paraffin in the mixture as a molding agent, stir evenly, and sieve, take particles with a particle size of 20-80 microns and mold them into compacts in a mold, and the molding pressure is 300MPa; place the compacts obtained above Sintering is car...

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Abstract

The invention relates to a high-strength toughness titanium carbonitride base metal ceramic material and a preparing method thereof, and belongs to the technical field of metal ceramic material preparing. The raw materials used by the high-strength toughness titanium carbonitride base metal ceramic material comprise, by weight percent, 35 to 65% of titanium carbonitride powder, 0.5 to 8% of titanium carbonitride whiskers, 10 to 20% of M composed of cobalt and nickel, 10 to 30% of an addition agent A and the balance tantalum carbide, wherein the addition agent A is composed of tungsten carbideand molybdenum carbide. The sum of weight percents of all components if 100%; the granularity of the titanium carbonitride powder ranges from 2 to 4 micrometers, the diameter of the titanium carbonitride whiskers ranges from 1 to 2 micrometers, and the length ranges from 15 to 20 micrometers. The preparing method comprises the steps that after all raw materials are matched and got according to design components, uniform mixing and pressing molding are carried out, and sintering is carried out at the temperature of 1420 DEG to 1520 DEG C, and a finished product is obtained. The material is reasonable in design, the obtained product is excellent in performance, and the large-scale industrial application and production are facilitated.

Description

technical field [0001] The invention relates to a high-strength toughness cermet material and a preparation method thereof, in particular to a titanium carbonitride-based cermet material reinforced and toughened by using titanium carbonitride whiskers and a preparation method thereof, belonging to the technical field of cermet material preparation. Background technique [0002] Ti(C,N)-based cermets use Ti(C,N) as the hard phase, Co, Ni and other metals as the bonding phase, and add WC, Mo 2 C, TaC, NbC and other carbides are used as composite materials to improve performance additives. Ti(C,N)-based cermets have a series of advantages such as high melting point, high hardness, corrosion resistance, wear resistance, oxidation resistance and good electrical and thermal conductivity, and are widely used in the preparation of high-speed cutting tools, molds and other blocks and Structural materials and metal surface coating materials and many other fields. Due to the rich res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/00C22C47/14C22C101/08
Inventor 吝楠赵龙博
Owner HUNAN UNIV
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