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Alloy reinforced titanium carbonitride-based composite material and preparation method thereof

A titanium carbonitride-based, composite material technology, applied in the field of cemented carbide materials, can solve the problems of poor grain size uniformity, slippage, and no significant improvement in material strength.

Active Publication Date: 2020-10-27
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have some effect, but these methods do not make a significant improvement in the strength of the material
Moreover, there are still a large number of grain boundary defects in the material, resulting in a large number of dislocations and slips, resulting in poor interface bonding, large gaps between grain boundaries, and poor grain size uniformity.

Method used

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  • Alloy reinforced titanium carbonitride-based composite material and preparation method thereof
  • Alloy reinforced titanium carbonitride-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of an alloy-strengthened titanium carbonitride-based composite material is carried out as follows:

[0045] Preparation of Alloy Phase Composite Powder

[0046] (1) Weigh raw materials: Weigh the corresponding cobalt oxide powder, chromium oxide, cerium oxide, niobium oxide, Zirconium (oxide purity greater than 99%);

[0047] (2) Mechanical impact mill crushing and mixing: put the weighed oxide powder and TiCN balls into a stirring ball mill tank, add absolute ethanol in an amount of 0.05L / kg, and then carry out mechanical impact crushing and mixing to form a wet slurry. The ball-to-material ratio is 3:1, the stirring ball milling speed is 300 rpm, and the crushing and mixing time is 48 hours;

[0048] (3) High-pressure spray drying: sieve the mixed wet slurry to remove balls, atomize the slurry under a pressure of 15MPa, mix and dry the atomized slurry with hot air at 60°C to form a micro-nano alloy mixture powder;

[0049] (4) Nitrogen hydroge...

Embodiment 2

[0055] A preparation method of an alloy-strengthened titanium carbonitride-based composite material is carried out as follows:

[0056] Preparation of Alloy Phase Composite Powder

[0057] (1) Weigh raw materials: Weigh the corresponding cobalt oxide powder, chromium oxide, cerium oxide, niobium oxide, Zirconium (oxide purity greater than 99%);

[0058] (2) Mechanical impact mill crushing and mixing: Put the weighed oxide powder and TiCN balls into a stirring ball mill tank, add absolute ethanol in an amount of 0.1L / kg, and then carry out mechanical impact crushing and mixing to form a wet slurry. The ball-to-material ratio is 5:1, the stirring ball milling speed is 500 rpm, and the crushing and mixing time is 36 hours;

[0059] (3) High-pressure spray drying: sieve the mixed wet slurry to remove balls, atomize the slurry at a pressure of 2 MPa, mix and dry the atomized slurry with hot air at 80°C to form a micro-nano alloy mixture powder;

[0060] (4) Nitrogen hydrogenati...

Embodiment 3

[0066] A preparation method of an alloy-strengthened titanium carbonitride-based composite material is carried out as follows:

[0067] Preparation of Alloy Phase Composite Powder

[0068] (1) Weigh raw materials: Weigh the corresponding cobalt oxide powder, chromium oxide, cerium oxide, niobium oxide, Zirconium (oxide purity greater than 99%);

[0069] (2) Mechanical impact mill crushing and mixing: put the weighed oxide powder and TiCN balls into a stirring ball mill tank, add absolute ethanol in an amount of 0.08L / kg, and then carry out mechanical impact crushing and mixing to form a wet slurry. The ball-to-material ratio is 4:1, the stirring ball milling speed is 400 rpm, and the crushing and mixing time is 40 hours;

[0070] (3) High-pressure spray drying: sieve the mixed wet slurry to remove balls, atomize the slurry under a pressure of 10MPa, mix and dry the atomized slurry with hot air at 70°C to form a micro-nano alloy mixed powder ;

[0071] (4) Nitrogen hydrogen...

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Abstract

The invention relates to an alloy reinforced titanium carbonitride-based composite material. The alloy reinforced titanium carbonitride-based composite material is characterized by being composed of atitanium-based base material and an alloy composite material, wherein the titanium-based base material is composed of TiCN and WC powder, and the alloy composite material is alloy phase composite powder composed of beta-Co, Cr, Ce, Nb and Zr. The titanium carbonitride-based composite material is spherical, excellent in interface bonding degree, and good in structural crystal face and grain uniformity. In the preparation process in line with a method, the segregation of Co and carbide is effectively inhibited, the agglomeration of alloy phases is inhibited, and the prepared titanium carbonitride-based composite material is good in uniformity and has few defects. The bending strength of the prepared titanium carbonitride-based composite material reaches 3000 MPa on average, and the averagefracture toughness can reach 13MPa.m<1 / 2>.

Description

technical field [0001] The invention belongs to the field of hard alloy materials in metal materials, and in particular relates to an alloy-strengthened titanium carbonitride-based composite material and a preparation method thereof. Background technique [0002] Titanium carbonitride-based composites are the main materials for cutting tools. With the increasing development of all walks of life, various products are constantly updated and iterated, especially in the fields of aerospace, aviation, automobiles, etc., the requirements and demand for materials are getting higher and higher. No matter in terms of precision or complexity, traditional materials have been It is impossible to meet the needs of these fields, especially the demand for cutting tools for metal materials. The processing of metal materials is inseparable from high-quality CNC tools. For example, various shafts and gear parts of automobiles need tools for cutting. At present, the CNC tool materials on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/04C22C1/10C22C1/05B22F9/22
CPCC22C29/04C22C29/005C22C1/051B22F9/22
Inventor 李淼鑫邓莹姜山张艳华陈巧旺成小庆廖广张恒硕皇甫浩霆
Owner CHONGQING UNIV OF ARTS & SCI
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