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A kind of titanium alloy composite material coated with composite coating and its preparation method and application

A technology of composite coating and composite materials, which is applied in the fields of dental implants, medical science, and dentistry, to achieve the effects of improving wear resistance and corrosion resistance, fine grains, and simple preparation methods

Active Publication Date: 2017-11-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon nanotubes have a diameter ratio of 100-1000, are excellent conductors of electricity, and have good self-lubricating properties, anti-friction properties, unique thermal conductivity and electrical conductivity, etc. However, few people have thought of carbon nanotubes so far. Applied to titanium alloy materials

Method used

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  • A kind of titanium alloy composite material coated with composite coating and its preparation method and application
  • A kind of titanium alloy composite material coated with composite coating and its preparation method and application
  • A kind of titanium alloy composite material coated with composite coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Reclaiming according to the following weight percentage: 89% titanium, niobium, tantalum and zirconium metal powder, 10% carbon nanotubes, 1% stearic acid, wherein stearic acid is used as a control agent to prevent cold welding during ball milling . The mass percentage of titanium, niobium, tantalum and zirconium element powder is Nb30%, Ta5%, Zr7%, Ti58%, the average particle size of titanium, niobium, tantalum and zirconium metal powder is 30-150 μm, the diameter of carbon nanotube is 20-30nm, and the length is 10- 30μm, the purity is greater than 95%.

[0029] The components weighed according to the above formula were placed in a ball mill jar, the ball-to-material ratio was 20:1, and the material of the grinding balls used was 201 stainless steel. In order to prevent the carbon nanotubes with low density from being sucked away in the vacuum, the carbon nanotubes are placed at the bottom of the ball mill jar, and then titanium, niobium, tantalum and zirconium elemen...

Embodiment 2

[0032] The ingredients are formulated according to the following weight percentages: 89% of titanium, niobium, tantalum and zirconium metal powder, 10% of carbon nanotubes, and 1% of stearic acid, wherein stearic acid is used as a control agent to prevent cold welding during the ball milling process. The mass percentage of titanium, niobium, tantalum and zirconium element powder is Nb30%, Ta5%, Zr7%, Ti58%, the average particle size of titanium, niobium, tantalum and zirconium metal powder is 30-150 μm, the diameter of carbon nanotube is 20-30nm, and the length is 10- 30μm, the purity is greater than 95%.

[0033] Put the components weighed according to the above formula into a ball mill jar, the ball-to-material ratio is 30:1, and the material of the grinding balls used is 201 stainless steel. In order to prevent the carbon nanotubes with low density from being sucked away in the vacuum, the carbon nanotubes are placed at the bottom of the ball mill jar, and then titanium, ni...

Embodiment 3

[0036] Dosing according to the following weight percentage: 94% titanium niobium tantalum zirconium metal powder, 5% carbon nanotubes, 1% stearic acid, wherein stearic acid is used as a control agent to prevent the powder from contacting with the grinding ball during the ball milling process Or cold welding occurs between ball milling tanks. The mass percentage of titanium, niobium, tantalum and zirconium metal powder is Nb30%, Ta5%, Zr7%, Ti58%, the average particle size of titanium, niobium, tantalum and zirconium element powder is 30-150 μm, the diameter of carbon nanotube is 20-30nm, and the length is 10- 30μm, the purity is greater than 95%.

[0037] The components weighed according to the above formula were placed in a ball mill jar, the ball-to-material ratio was 20:1, and the material of the grinding balls used was 201 stainless steel. In order to prevent the carbon nanotubes with low density from being sucked away in the vacuum, the carbon nanotubes are placed at the...

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Abstract

The invention discloses a titanium alloy composite material coated with a composite coating. Titanium alloy serves as the base material of the titanium alloy composite material, and the base material is coated with the titanium-based composite coating. The microstructure of the titanium-based composite coating is beta-Ti mainly containing titanium, niobium, tantalum and zirconium, and the titanium-based composite coating further contains TiC-reinforced phases which are evenly distributed. The titanium-based composite coating is prepared by conducting mixed ball-milling on titanium-niobium-tantalum-zirconium powder and a carbon nano tube and then conducting sintering. The preparation method of the titanium alloy composite material comprises the steps that ball-milling is conducted on the carbon nano tube and the titanium-niobium-tantalum-zirconium powder, so that composite powder is obtained; and then the titanium alloy base material is placed in a graphite mould, the obtained composite powder is added, and the carbon nano tube reinforced titanium alloy composite material is obtained through high-temperature sintering. The composite material has good abrasion resistance, corrosion resistance and good biocompatibility; in addition, the preparation method of the composite material is easy, and the coating and a base body are in good metallurgical bonding.

Description

technical field [0001] The invention relates to a powder metallurgy technology, in particular to a titanium alloy composite material coated with a composite coating and a preparation method and application thereof. Background technique [0002] Titanium and titanium alloys have become human hard tissue substitutes such as dental implants, orthopedic steel plates, and artificial joints due to their good biocompatibility, mechanical strength, chemical stability, corrosion resistance, and low elastic modulus similar to bone tissue. material of choice. However, titanium and titanium alloys have disadvantages such as low hardness and poor wear resistance, which greatly limit their applications. Therefore, how to improve the hardness and wear resistance of titanium and titanium alloys is a practical problem that needs to be solved urgently. At present, wear-resistant coatings are mainly prepared on the surface of titanium alloys by laser cladding, plasma spraying, electric spark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/00B22F9/04B22F3/105A61L27/42A61C8/00
CPCA61C8/0013A61L27/427B22F3/105B22F7/00B22F9/04B22F2009/043B22F2998/10B22F2999/00B22F2201/20
Inventor 吴宏宰雄飞刘咏兰小东张卫东王琦潘军任俊业
Owner CENT SOUTH UNIV
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