Method of preparing graphene reinforced Ni3Ti composite material through laser induction hybrid cladding

A composite material and graphene technology, applied in the field of laser processing, to avoid thermal damage, excellent corrosion resistance and wear resistance, and protect integrity.

Inactive Publication Date: 2016-11-23
TIANJIN POLYTECHNIC UNIV
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  • Summary
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AI Technical Summary

Problems solved by technology

However, using laser-induction composite cladding technology, graphene is uniformly embedded in Ni 3 In the Ti intermetallic compound, the simultaneous increase of Ni 3 The method of wear resistance and toughness of Ti intermetallic compounds has not been reported in the literature

Method used

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Embodiment Construction

[0013] The present invention is achieved like this, and its method and steps are:

[0014] (1) Coarse, activate and reduce the surface of graphene first, and then perform electroless nickel plating to improve its uniform dispersion performance;

[0015] (2) Mix the surface-modified graphene with titanium powder and Ni20Cr alloy powder in a ball mill to prepare a 20-60 μm cladding powder;

[0016] (3) The pure titanium plate is used as the base material, and the surface is degreased and derusted, and then the cladding powder is deposited on the surface of the pure titanium plate by laser-induction composite cladding technology to form graphene-enhanced Ni 3 Ti composites.

[0017] When performing the step (1) of the present invention, the specific roughening process parameters are: add graphene to 8% NaOH solution, ultrasonically disperse at 35°C for 60 minutes, separate, and wash with deionization; the specific activation process Parameters are: adding the roughened graphene...

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Abstract

The invention discloses a method of preparing graphene reinforced Ni3Ti composite material through laser induction hybrid cladding. The method is characterized by comprising the following steps: firstly, adding graphene subjected to surface nickel plating treatment into titanium powder and Ni20Cr alloy powder to form mixed powder, wherein the mass ratio of titanium powder to Ni20Cr alloy powder is (1:8), and the mass percent of the graphene subjected to surface nickel plating treatment in the mixed powder is 3.5%; then, adding the mixed powder in a ball mill to be uniformly mixed so as to form a cladding material; and finally, adopting laser induction hybrid cladding to deposit the cladding material on the surface of a plate so as to prepare the graphene reinforced Ni3Ti composite material, wherein the base material of the plate is pure titanium. According to the invention, the laser induction hybrid cladding method is adopted to prepare the graphene reinforced Ni3Ti composite material in the atmosphere, and the graphene reinforced Ni3Ti composite material has excellent corrosion resistance and abrasion resistance and has broad application prospect in the fields of shape memory alloy and biomedical materials.

Description

technical field [0001] The invention relates to a laser-induction composite cladding graphene reinforced Ni 3 The invention relates to a Ti composite material method, which belongs to the technical field of laser processing. Background technique [0002] Ni 3 Ti intermetallic compounds have two crystal structures: hexagonal DO 24 type crystal structure and L1 2 The face-centered cubic crystal structure is usually used as a precipitation strengthening phase for nickel-based and iron-based superalloys, mainly because Ni 3 Ti intermetallic compounds have an increase in strength with increasing temperature and excellent oxidation resistance. Usually Ni 3 The methods of Ti intermetallic compounds mainly include: self-propagating high-temperature synthesis (SHS), powder sintering method, directional solidification method, etc. Although these methods have prepared small-sized Ni to some extent 3 Ti intermetallic materials, but none of these methods completely overcome the Ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F9/04
CPCC23C24/103B22F9/04B22F2009/043
Inventor 周圣丰戴晓琴雷剑波陈翰宁郭津博顾振杰
Owner TIANJIN POLYTECHNIC UNIV
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