Preparation method for titanium-based composite material with graphene-rare earth mixed micro-structure

A technology of titanium-based composite materials and graphene, which is applied in metal processing equipment, improvement of process efficiency, transportation and packaging, etc., to achieve the effect of improving strength and mechanical properties, simple process and easy realization

Active Publication Date: 2019-11-12
西安稀有金属材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The currently reported studies mainly focus on the reinforcement effect of graphene or rare earth elements in metal matrix c

Method used

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  • Preparation method for titanium-based composite material with graphene-rare earth mixed micro-structure
  • Preparation method for titanium-based composite material with graphene-rare earth mixed micro-structure

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Experimental program
Comparison scheme
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Embodiment 1

[0028] The method of the present embodiment comprises the following steps:

[0029] Step 1, the preparation of graphene dispersion liquid: adopt the method for ultrasonic pre-dispersion assisted mechanical stirring to disperse 0.1g graphene in 100mL solvent at room temperature, obtain graphene dispersion liquid; The time of described ultrasonic pre-dispersion is 5min, so The rotating speed of described mechanical stirring is 50r / min; Described solvent is mixed according to the volume ratio of 1:4 by ethanol and Virahol;

[0030] Step 2, preparation of rare earth-titanium-based mixed powder: 0.3g of LaB 6 Perform high-energy ball milling and mixing with 200g of TC4 titanium alloy powder to obtain rare earth-titanium-based mixed powder; the high-energy ball milling speed is 300r / min, the time is 3h, and the ball-to-material ratio is 8:1;

[0031]Step 3. Preparation of ternary mixed powder: add the graphene dispersion obtained in step 1 to the rare earth-titanium-based mixed pow...

Embodiment 2

[0037] The method of the present embodiment comprises the following steps:

[0038] Step 1, the preparation of graphene dispersion liquid: adopt the method for ultrasonic pre-dispersion assisted mechanical stirring to disperse 0.5g graphene in 100mL solvent at room temperature, obtain graphene dispersion liquid; The time of described ultrasonic pre-dispersion is 10min, so The rotating speed of described mechanical stirring is 200r / min; Described solvent is mixed according to the volume ratio of 1:4 by ethanol and Virahol;

[0039] Step 2. Preparation of rare earth-titanium-based mixed powder: 0.5g of La and 200g of Ti-1400 titanium alloy powder were mixed by high-energy ball milling to obtain rare-earth-titanium-based mixed powder; min, the time is 5h, the ball-to-material ratio is 8:1

[0040] Step 3. Preparation of ternary mixed powder: add the graphene dispersion obtained in step 1 to the rare earth-titanium-based mixed powder obtained in step 2, and perform mechanical she...

Embodiment 3

[0044] The method of the present embodiment comprises the following steps:

[0045] Step 1, preparation of graphene dispersion liquid: 1.0g graphene is dispersed in 100mL solvent at room temperature by adopting the method for ultrasonic pre-dispersion assisted mechanical stirring, obtains graphene dispersion liquid; The time of described ultrasonic pre-dispersion is 10min, so The rotating speed of described mechanical stirring is 200r / min; Described solvent is mixed according to the volume ratio of 1:4 by ethanol and Virahol;

[0046] Step 2, preparation of rare earth-titanium-based mixed powder: 0.5g of La, 0.5g of La 2 o 3 Perform high-energy ball milling and mixing with 200g of TC4 titanium alloy powder to obtain a rare earth-titanium-based mixed powder; the high-energy ball milling speed is 500r / min, the time is 5h, and the ball-to-material ratio is 8:1

[0047] Step 3. Preparation of ternary mixed powder: add the graphene dispersion obtained in step 1 to the rare earth-...

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Abstract

The invention discloses a preparation method for titanium-based composite material with a graphene-rare earth mixed micro-structure. The method comprises the following steps: firstly, preparing graphene dispersion liquid; secondly, mixing a substance containing a rare earth element with titanium-based powder to obtain rare earth-titanium-based mixed powder; thirdly, adding the graphene dispersionliquid to the rare earth-titanium-based mixed powder, and drying the mixture to obtain three-element mixed powder; fourthly, performing sinter molding on the three-element mixed powder to obtain the titanium-based composite material with the graphene-rare earth mixed micro-structure. According to the method, the three-element mixed powder with the graphene-rare earth mixed micro-structure is prepared by two-step mixing, and the titanium-based composite material with the graphene-rare earth mixed micro-structure is prepared by sintering. Spherical particles of the substance containing the rareearth element play roles in dispersion strengthening and crystal boundary strengthening; in-situ synthesis titanium carbide plays a dispersion strengthening role; the graphene plays a load transmitting role; through collaboration of the three elements, the strength mechanical property of the titanium-based composite material with the graphene-rare earth mixed micro-structure are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and in particular relates to a preparation method of a graphene-rare earth hybrid microstructure titanium-based composite material. Background technique [0002] Compared with traditional steel materials, titanium and titanium alloys have the characteristics of low density, high specific strength, excellent corrosion resistance and good biocompatibility, and have been widely used in aerospace, biomedicine, marine ships, energy and chemical industries, etc. Applications. With the rapid development of aerospace, the requirements and application environment of titanium and titanium alloys are becoming more and more stringent. The design and proposal of metal matrix composites can well replace the traditional single metal material. By adding different reinforcing phases, the electrical and thermal conductivity, thermal stability and mechanical properties of the met...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F1/02B22F3/105C22C1/05C22C14/00C22C1/10
CPCB22F1/0003B22F9/04B22F3/1039B22F3/105C22C1/05C22C14/00B22F2009/043B22F2003/1054B22F1/17Y02P10/25
Inventor 董龙龙霍望图卢金文张于胜刘跃李亮黎栋栋
Owner 西安稀有金属材料研究院有限公司
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