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Method for preparing carbon nano tube enhanced titanium-base compound material by in-suit reaction

A technology for titanium-based composite materials and carbon nanotubes is applied in the field of in-situ reaction preparation of carbon nanotube-reinforced titanium-based composite materials, which can solve the problems of poor uniform dispersion of carbon nanotubes, poor structural integrity, and pollution of titanium matrix materials. Avoid the reaction between titanium and carbon, the structure is complete, the effect of uniform dispersion without agglomeration

Inactive Publication Date: 2012-03-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of poor uniform dispersion and poor structural integrity of carbon nanotubes in the existing method for preparing titanium-based composite materials reinforced by carbon nanotubes, and the easy reaction between carbon groups and titanium substrates, resulting in pollution of titanium substrate materials. It provides A method for preparing carbon nanotube-reinforced titanium-based composites by in-situ reaction

Method used

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  • Method for preparing carbon nano tube enhanced titanium-base compound material by in-suit reaction
  • Method for preparing carbon nano tube enhanced titanium-base compound material by in-suit reaction
  • Method for preparing carbon nano tube enhanced titanium-base compound material by in-suit reaction

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specific Embodiment approach 1

[0014] Specific embodiment one: the method for preparing carbon nanotube reinforced titanium-based composite material by in-situ reaction in this embodiment, proceeds according to the following steps: 1. Nickel nitrate hexahydrate and TiH 2 The powder is added into an ethanol solution with a volume concentration of 95% in a weight ratio of 0.143:1 to obtain a mixed solution. The concentration of nickel nitrate hexahydrate in the mixed solution is 0.1mol / L, stirred for 1 hour, and then heated to 80°C and stirred to mix The solution is evaporated until the weight ratio of Ni and Ti is 0.03:1, that is, Ni-TiH 2 Composite powder; Two, the Ni-TiH obtained in step one 2 Spread the composite powder evenly in the quartz boat, put the quartz boat into the plasma-enhanced chemical vapor deposition equipment, evacuate to 5Pa, and inject H 2 , H 2 The flow rate is 20sccm, the working pressure is 200Pa, then the temperature rises, and the working temperature reaches 500-550°C within 20 m...

specific Embodiment approach 2

[0017] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 2, the working temperature reaches 500°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment is different from Embodiment 1 in that: in step 2, the working temperature reaches 550°C. Others are the same as in the first embodiment.

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Abstract

The invention relates to a method for preparing a carbon nano tube enhanced titanium-base compound material by in-suit reaction in order to solve the problems of low uniform dispersion and low structural completeness of a carbon nano tube in the conventional method for preparing the carbon nano tube enhanced titanium-base compound material and pollution to the titanium-base material caused by reaction of a carbon group and a titanium base body. The method comprises the following steps of: adding nickel nitrate hexahydrate and TiH2 powder into an ethanol solution, stirring and evaporating to obtain Ni-TiH2 compound powder; paving the Ni-TiH2 compound powder in a quartz boat, putting the quartz boat into deposition equipment, feeding H2, raising temperature, feeding CH4, and after the deposition is finished, stopping feeding the CH4 so as to obtain carbon nano tube / TiH2 compound power; pressing the carbon nano tube / TiH2 compound power into a block body, sintering, and re-pressing to obtain the carbon nano tube enhanced titanium-base compound material. Carbon nano tubes in the compound material are uniform to disperse and cannot be aggregated; the compound material is high in purity and has a complete structure; and reaction between the titanium and the defected carbon nano tube can be avoided.

Description

technical field [0001] The invention relates to a method for preparing carbon nanotube-reinforced titanium-based composite material by in-situ reaction. Background technique [0002] Titanium and titanium alloys have small specific gravity, high specific strength, and good high-temperature performance, making them ideal materials for the aerospace industry. Moreover, it has good corrosion resistance and is an important demand material for industries such as navigation, petroleum, chemical industry, biology, and medicine. With the advancement of the new technological revolution, the demand for high-performance titanium and titanium alloy materials is becoming increasingly urgent in the high-tech era. However, traditional titanium and titanium alloy materials have been difficult to meet the high-tech requirements, and higher requirements have been put forward for the specific strength, specific stiffness, friction resistance, high temperature resistance and fatigue resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/11C22C49/14C22C47/14C22C101/10
Inventor 亓钧雷张丽霞曹健冯吉才
Owner HARBIN INST OF TECH
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