Method for nickel electroplating on surfaces of Sic fibers

A silicon carbide fiber and nickel electroplating technology, which is applied in the field of electroplating nickel on the surface of silicon carbide fiber, can solve the problems of SiC fiber that have not been reported yet, and achieve the effects of small porosity, controllable thickness, and reduced strength and weaving performance

Active Publication Date: 2017-05-31
XIAMEN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0007] So far, there has been no report on the direct electroplating of nickel on the surface of SiC fibers.

Method used

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  • Method for nickel electroplating on surfaces of Sic fibers
  • Method for nickel electroplating on surfaces of Sic fibers

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Embodiment Construction

[0030] The present invention is described in further detail below in conjunction with embodiment.

[0031] (1) Cut the continuous SiC fiber with a resistivity of 10Ω·cm according to the required length to obtain a fixed-length continuous SiC fiber (A);

[0032] (2) Place the continuous SiC fiber (A) in a porous graphite crucible, and then put the crucible into a tube furnace for heat treatment and degumming: heat up to 600°C at a rate of 5°C / min, and keep it at 600°C for 0.5h , and then cooled with the furnace to obtain degummed SiC fibers (B);

[0033] (3) Boil the degummed SiC fiber (B) in 1mol / L NaOH solution for 15min to remove the organic and inorganic attachments on the surface, and then rinse it with distilled water for more than 3 times to obtain the degreased SiC fiber (C);

[0034] (4) Put the degreased SiC fiber (C) into an aqueous solution of nitric acid with a mass fraction of 65% for acid corrosion to roughen its surface to increase its surface energy and enhan...

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Abstract

The invention discloses a method for nickel electroplating on the surfaces of Sic fibers and relates to surface treatment of the Sic fibers. Continuous Sic fibers are cut, continuous Sic fibers with certain lengths are obtained and subjected to heat treatment and degumming, and degummed Sic fibers are obtained; the degummed Sic fibers are placed in a NaOH solution to be boiled, and after rinsing, degreased Sic fibers are obtained; the degreased Sic fibers are put in a nitric acid aqueous solution to be soaked and subjected to acid corrosion, so that the surfaces of the Sic fibers are roughened to improve the surface energy of the Sic fibers, the binding force between a plating layer and the fibers is strengthened, the Sic fibers are taken out from the nitric acid aqueous solution and rinsed, and surface-roughened Sic fibers are obtained; the surface-roughened Sic fibers are dried, and pretreated and dried Sic fibers are obtained; and an electroplating solution is prepared, the obtained pretreated and dried Sic fibers serving as a cathode and a metal nickel plate serving as a anode are placed in the electroplating solution, a layer of bright and compact nickel metal coating is formed on the surfaces of the pretreated and dried Sic fibers, and nickel electroplating on the surfaces of the Sic fibers is achieved.

Description

technical field [0001] The invention relates to surface treatment of silicon carbide (SiC) fibers, in particular to a method for electroplating nickel on the surface of silicon carbide fibers. Background technique [0002] Continuous fiber reinforced metal matrix composites are a new type of composite materials. It is composed of continuous fiber with excellent mechanical properties as reinforcement and composited with metal matrix. Reinforcing fibers are generally low-density, high-strength, high-temperature-resistant ceramic fibers. Due to the addition of fibers, the composite material has excellent comprehensive properties such as low density, high specific strength, high specific modulus, high temperature resistance, high electrical conductivity, and high thermal conductivity. It has great potential in advanced weapons, aerospace, nuclear energy, and electrical fields. Broad application prospects. For example, continuous fiber-reinforced titanium alloy composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/54C25D7/06C25D3/12
CPCC25D3/12C25D5/54C25D7/0607
Inventor 李思维万超陈立富李永财汤明
Owner XIAMEN UNIV
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