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TiC-Ni3Al composite material and preparation method thereof

A composite material and composite powder technology, applied in the field of TiC-Ni3Al composite material and its preparation, can solve the problems of inability to obtain high-density and high-strength TiC-Ni composite material, and achieve the effects of low cost, high efficiency and simple process

Inactive Publication Date: 2015-07-15
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a TiC-Ni 3 Al composite materials, and provide its preparation method at the same time, to solve the problem that existing preparation methods cannot obtain high-density and high-strength TiC-Ni 3 Problems with Al composites

Method used

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  • TiC-Ni3Al composite material and preparation method thereof
  • TiC-Ni3Al composite material and preparation method thereof
  • TiC-Ni3Al composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, comprises the following steps successively:

[0023] (1) Put Ti powder, Ni powder, Al powder, graphite powder, B powder and grinding balls into the ball milling pot, fill with argon, and carry out high-energy ball milling on a planetary ball mill with a ball-to-material mass ratio of 20:1, The ball milling speed is 300rpm, and the ball milling time is 3h, to obtain TiC-Ni 3 The composite powder raw material of Al; Wherein the mass percent of each component is: Ti powder 63.94%, Ni powder 17.50%, aluminum powder 2.53%, graphite powder 15.98%, B powder 0.05%;

[0024] Among them, Ti powder has a particle size of 45 microns and a purity of 99.0%, Ni powder has a particle size of 2.5 microns and a purity of 99.5%, Al powder has a particle size of 2 microns and a purity of 99.5%, and graphite powder has a particle size of 5.5 microns and a purity of 99.5%. 99.5%, B powder has a particle size of 15 microns and a purity of 99.0%;

[0025] (2) The obtained TiC-N...

Embodiment 2

[0028] Embodiment 2, comprises the following steps successively:

[0029](1) Put Ti powder, Ni powder, Al powder, graphite powder, B powder, and balls into a ball mill tank, fill with argon, and perform high-energy ball milling on a planetary ball mill with a ball-to-material mass ratio of 25:1. The rotating speed is 350rpm, and the ball milling time is 4h to obtain TiC-Ni 3 The composite powder raw material of Al; Wherein the mass percent of each component is: Ti powder 55.94%, Ni powder 26.19%, aluminum powder 3.80%, graphite powder 13.99%, B powder 0.08%;

[0030] Among them, Ti powder has a particle size of 25 microns and a purity of 99.2%, Ni powder has a particle size of 2.2 microns and a purity of 99.6%, Al powder has a particle size of 1.8 microns and a purity of 99.6%, and graphite powder has a particle size of 5 microns and a purity of 99.6%. 99.6%, B powder has a particle size of 10 microns and a purity of 99.2%;

[0031] (2) The obtained TiC-Ni 3 Al composite ra...

Embodiment 3

[0034] Embodiment 3, comprises the following steps successively:

[0035] (1) Put Ti powder, Ni powder, Al powder, graphite powder, B powder, and balls into a ball mill tank, fill with argon, and perform high-energy ball milling on a planetary ball mill with a mass ratio of ball to material of 30:1. The rotation speed is 350rpm, and the ball milling time is 5h to obtain TiC-Ni 3 The composite powder raw material of Al; Wherein the mass percent of each component is: Ti powder 47.95%, Ni powder 34.89%, aluminum powder 5.07%, graphite powder 11.99%, B powder 0.10%;

[0036] Among them, Ti powder has a particle size of 20 microns and a purity of 99.5%, Ni powder has a particle size of 2 microns and a purity of 99.7%, Al powder has a particle size of 1.5 microns and a purity of 99.7%, and graphite powder has a particle size of 4.5 microns and a purity of 99.7%. 99.7%, B powder has a particle size of 5 microns and a purity of 99.5%;

[0037] (2) The obtained TiC-Ni 3 Al composite...

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Abstract

The invention discloses a TiC-Ni3Al composite material and a preparation method thereof, belongs to a metal-ceramic composite material and a preparation method thereof, and aims at solving the problem that the TiC-Ni3Al composite material with high compactness and high strength cannot be obtained by an existing preparation method. The TiC-Ni3Al composite material disclosed by the invention comprises a ceramic-phase TiC and binding-phase Ni3Al intermetallic compound, and is prepared by die forming, degreasing and gas-pressure sintering of TiC-Ni3Al composite powder; the TiC-Ni3Al composite powder is synthesized by high-energy ball milling induced self-propagating combustion reaction of Ti powder, Ni powder, Al powder, graphite powder and B powder as raw materials in the presence of argon; the preparation method of the TiC-Ni3Al composite material sequentially comprises the following steps: high-energy ball milling, die forming, degreasing, and gas-pressure sintering. The TiC-Ni3Al composite material is simple in process, high in efficiency and low in cost; the hardness of the prepared TiC-Ni3Al composite material is 86.0-91.5HRA; the bending strength is 1320-2165MPa; the breaking tenacity KIC is 8.66MPa.m1 / 2 to 17.48MPa.m1 / 2; and the TiC-Ni3Al composite material is suitable for being used as a cutting tool, a heat extrusion die and a high-temperature part of an aircraft engine.

Description

technical field [0001] The invention belongs to a metal-ceramic composite material and a preparation method thereof, in particular to a TiC-Ni 3 Al composite material and its preparation method. Background technique [0002] Titanium carbide (TiC) has high hardness (Vickers hardness 2800-3200), elastic modulus (350GPa), melting point (3065°C) and low density (4.93g / cm 3 ), commonly used as cutting tools, abrasives and reinforcement phase materials. However, due to the high brittleness of single-phase TiC at room temperature, metal elements Fe, Co, and Ni are generally added to TiC as a binder phase to form a metal-ceramic composite material to improve the fracture toughness of TiC ceramics, thereby expanding its scope of application. TiC and Ti(C,N)-based cermets are gradually developed as an important cutting tool material on this basis. Their low cost and excellent cutting performance have partially replaced WC-Co hard metal in the field of metal cutting. quality alloy...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C29/10
Inventor 陈肖许剑锋肖启明孙权权陈杰
Owner HUAZHONG UNIV OF SCI & TECH
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