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A method for rapidly preparing high-strength and tough layered titanium matrix composites

A titanium-based composite material, high-strength technology, applied in chemical instruments and methods, coating, lamination, etc., can solve the problems of adverse effects on the performance of composite materials, complex preparation process, long process, etc., and achieve short electrophoretic deposition time and simplified The effect of preparation process and short time

Active Publication Date: 2021-03-05
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

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Problems solved by technology

However, due to the need to use various reagents such as surfactants and process control agents in the preparation process, the entire preparation process is complicated and long (only the vacuum drying process will last for 24 hours), and the process of preparing flake powder by ball milling inevitably introduces Fe , Cr, C, N and other impurities will adversely affect the performance of composite materials

Method used

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  • A method for rapidly preparing high-strength and tough layered titanium matrix composites
  • A method for rapidly preparing high-strength and tough layered titanium matrix composites
  • A method for rapidly preparing high-strength and tough layered titanium matrix composites

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Experimental program
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Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1. Pretreatment of graphene oxide and titanium foil: add graphene oxide prepared by the Hummers method into ethanol for ultrasonic dispersion for 1 hour, then add aluminum nitrate and stir evenly to obtain a mixed solution; put a titanium foil with a thickness of 0.3mm into Clean in the mixed acid solution for 10s, then use clear water and ethanol to clean, then dry; the mass ratio of aluminum nitrate and graphene oxide is 1:2, the quality of graphene oxide and the volume of ethanol used for ultrasonic dispersion The ratio is 0.6:1, the unit of mass is mg, and the unit of volume is mL; the mixed acid solution is composed of HF solution with a mass concentration of 40%, HNO with a mass concentration of 65%. 3 solution and H 2 O is prepared according to the volume ratio of 1:3:8;

[0028] Step 2, electrophoretic deposition of graphene oxide on the surface of titanium foil: use the dried titanium foil in step 1 ...

Embodiment 2

[0044] This embodiment includes the following steps:

[0045] Step 1. Pretreatment of graphene oxide and titanium foil: add graphene oxide prepared by the Hummers method into ethanol for ultrasonic dispersion for 1.5h, then add aluminum nitrate and stir evenly to obtain a mixed solution; put a titanium foil with a thickness of 0.05mm into the mixed acid solution and cleaned for 10s, then cleaned with water and ethanol successively, and then dried; the mass ratio of aluminum nitrate to graphene oxide is 1:2, and the quality of graphene oxide is the same as that of the ethanol used for ultrasonic dispersion. The volume ratio is 0.3:1, the unit of mass is mg, and the unit of volume is mL; the mixed acid solution is composed of HF solution with a mass concentration of 40%, HNO with a mass concentration of 65%. 3 solution and H 2 O is prepared according to the volume ratio of 1:3:8;

[0046] Step 2, electrophoretic deposition of graphene oxide on the surface of titanium foil: use...

Embodiment 3

[0055] Step 1. Pretreatment of graphene oxide and titanium foil: add graphene oxide prepared by the Hummers method into ethanol for ultrasonic dispersion for 1.2h, then add aluminum nitrate and stir evenly to obtain a mixed solution; put a titanium foil with a thickness of 0.1mm into the mixed acid solution and cleaned for 10s, then cleaned with water and ethanol successively, and then dried; the mass ratio of aluminum nitrate to graphene oxide is 1:2, and the quality of graphene oxide is the same as that of the ethanol used for ultrasonic dispersion. The volume ratio is 0.4:1, the unit of mass is mg, and the unit of volume is mL; the mixed acid solution is composed of HF solution with a mass concentration of 40%, HNO with a mass concentration of 65%. 3 solution and H 2 O is prepared according to the volume ratio of 1:3:8;

[0056] Step 2, electrophoretic deposition of graphene oxide on the surface of titanium foil: the titanium foil cleaned and dried in step 1 is used as the...

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Abstract

The invention discloses a method for quickly preparing a high-strength and tough layered titanium-based composite material. The method comprises: 1. After dispersing graphene oxide, adding aluminum nitrate and stirring to obtain a mixed solution, cleaning and drying the titanium foil; 2. The dried titanium foil is used as the cathode, the copper sheet is used as the anode, and the mixed solution is used as the electrophoretic deposition solution for electrophoretic deposition to form a titanium foil with a graphene oxide coating; 3. After stacking the titanium foils with a graphene oxide coating The layered graphene oxide reinforced titanium matrix composite was obtained by sintering. The invention regulates the dispersion and distribution of graphene oxide on the surface of titanium foil through electrophoretic deposition to obtain titanium foil with deposited graphene oxide coating, and after sintering, graphene oxide, deposited titanium foil and the titanium foil above the stack generate a small amount of carbides As a connection layer, the interfacial bonding strength between graphene oxide and titanium foil is improved, endowing the layered graphene oxide reinforced titanium-based composite with high strength and high plasticity, avoiding the introduction of impurities and shortening the preparation time.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for rapidly preparing a high-strength and tough layered titanium-based composite material. Background technique [0002] Due to their excellent mechanical properties and functionality, metal matrix composites have been widely used in aerospace, biomedicine, marine ships, chemical engineering and other fields. As an emerging nano-carbon material, graphene or graphene oxide has ultra-high strength, excellent corrosion resistance and excellent biological properties, so graphene is increasingly used as a reinforcement of metal matrix composites. The existing methods for preparing graphene or graphene oxide reinforced titanium matrix composites are mainly powder metallurgy methods, and the uniform dispersion of graphene in the three-dimensional space inside the material can be basically realized by using the ball milling method or stirring m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D13/02C25D13/20B32B37/06B32B37/10
CPCB32B37/06B32B37/10C25D13/02C25D13/20
Inventor 霍望图张于胜董龙龙卢金文刘跃刘亮吴昊雷诚心
Owner 西安稀有金属材料研究院有限公司