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Method for preparing nano/submicron TiB-TiC enhanced titanium-base composite material (TiB+TiC)/Ti

A titanium-based composite material and nanotechnology, applied in the direction of manufacturing tools, welding equipment, laser welding equipment, etc., can solve the problems of poor wear resistance, coarse particles, unfavorable comprehensive mechanical properties of the cladding layer, etc., and achieve excellent wear resistance Effect

Inactive Publication Date: 2008-03-19
SHANGHAI UNIV OF ENG SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The particles are relatively coarse, which is not conducive to the further improvement of the comprehensive mechanical properties of the cladding layer
[0012] Therefore, it has become necessary to explore and propose new technical approaches to solve the fatal shortcomings of the current titanium alloy surface, such as large friction coefficient and poor wear resistance, so as to improve the safety of its structure and reliability of use, and expand the application field of titanium alloy. Important issues to overcome

Method used

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  • Method for preparing nano/submicron TiB-TiC enhanced titanium-base composite material (TiB+TiC)/Ti
  • Method for preparing nano/submicron TiB-TiC enhanced titanium-base composite material (TiB+TiC)/Ti
  • Method for preparing nano/submicron TiB-TiC enhanced titanium-base composite material (TiB+TiC)/Ti

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Effect test

Embodiment 1

[0045] This nano / submicron TiB-TiC strengthens titanium-based composite material (TiB+TiC) / Ti, and the composition (weight %) of preparation required component of this composite material is 80% Ti, 15% B 4 C, 5% CeO 2 .

[0046] The preparation process of the above-mentioned nano / submicron TiB-TiC reinforced titanium-based composite material (TiB+TiC) / Ti comprises the following steps:

[0047] (1) reactant Ti, reactant B 4 C and CeO 2 The powder precursor is assembled into cohesive particles with a particle size of about 30 μm through plasma densification and granulation;

[0048] (2) Cold spray a layer of adhesive particles with a thickness of about 0.5-1.0mm on the titanium alloy Ti-6Al-4V substrate to form a pre-assembled layer;

[0049] (3) Coating on the surface of the above-mentioned pre-assembled layer can increase the CO 2 A liquid light-absorbing coating with laser absorptivity; the liquid light-absorbing coating is composed of nano-oxide main materials selected ...

Embodiment 2

[0058] This nano / submicron TiB-TiC strengthens titanium-based composite material (TiB+TiC) / Ti, and the composition (weight %) of preparation required component of this composite material is 72%Ti, 20%B 4 C, 8% CeO 2 .

[0059] The preparation process of the above-mentioned nano / submicron TiB-TiC reinforced titanium-based composite material (TiB+TiC) / Ti comprises the following steps:

[0060] (1) reactant Ti, reactant B 4 C and CeO 2 The powder precursor is assembled into cohesive particles with a particle size of about 30 μm through plasma densification granulation;

[0061] (2) Cold spray a layer of adhesive particles with a thickness of about 0.5-1.0mm on the titanium alloy Ti-6A1-4V substrate to form a pre-assembled layer;

[0062] (3) coating on the surface of the above-mentioned pre-assembly layer can increase the CO laser absorption rate of the liquid light-absorbing coating; the liquid light-absorbing coating is selected from zinc oxide, titanium oxide, silicon diox...

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Abstract

The present invention discloses a preparation method for nanometer / submicron TiB-TiC reinforced titanium matrix composite (TiB TiC) / Ti. The method comprises steps that after a precursor body selected from Ti, B 4 C, and rare earth oxide CeO 2 powder is uniformly mixed, plasma densified granulation is performed to the precursor body to assemble the precursor body into binding grains with the grain size of about 30 micron, and cold spraying of the binding grains onto a titanium Ti-6Al-4V alloy substrate is performed, and the thickness is controlled between 0.5 and 1.0 mm. Then liquid light absorbing coating which mainly comprises nano oxide and other kinds of auxiliary agent and enhances the laser absorption rate on the CO 2 is coated on the surface of the pre-assembled coating; laser scanning is performed to the pre-assembled coating, to obtain the nanometer / submicron TiB-TiC reinforced titanium matrix composite (TiB TiC) / Ti. The present invention can organically combine the high hardness degree and the high chemical stability of ceramic material with the high tensibility and the high intensity of the titanium alloy, solve the fatal disadvantages of large titanium alloy friction coefficient and poor wear resistance, etc., and thereby can be applied to the modification of the titanium alloy components on aerospace planes and navigation ships, and the titanium alloy components of acid proof pumps and acid proof valves.

Description

technical field [0001] The invention relates to a method for preparing a titanium-based composite material, in particular to a method for preparing a nanometer / submicron TiB-TiC reinforced titanium-based composite material (TiB+TiC) / Ti. Background technique [0002] Titanium alloys have the advantages of low density, high specific strength, excellent corrosion resistance, and good heat resistance, and are widely used in aerospace, automobile, shipbuilding, and chemical equipment manufacturing. However, titanium alloys have fatal shortcomings such as large friction coefficient and poor wear resistance, which seriously affect the safety of its structure and reliability of use, and limit its application. Therefore, improving the wear resistance of titanium alloys has become an important issue that must be overcome in the wide application of titanium alloys. When the traditional titanium alloy material is developed close to the highest limit of a certain performance, the subjec...

Claims

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Application Information

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IPC IPC(8): C23C24/08B23K26/00B23K26/18B23K26/34C22C14/00
Inventor 李军李文戈张光钧
Owner SHANGHAI UNIV OF ENG SCI
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