Method for preparing carbon covered nickel nano grain enhanced silver based composite material

A nano-particle, carbon-coated nickel technology, applied in metal material coating process, gaseous chemical plating, coating and other directions, can solve problems such as uneven dispersion of reinforcement phase, achieve a simple and convenient preparation method, and is conducive to comprehensive performance , the effect of good electrical performance
CN100594258CInactive Publication Date: 2010-03-17HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2010-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing carbon-coated nickel nano-particle enhanced silver-base composite material and relates to manufacturing of silver-base alloy. The method comprises the following steps: step one, the precursor NiO plus Ag2O of Ni plus Ag catalyst is prepared by a deposition-precipitation method; step two, carbon-coated nickel nano-particles plus silver in-situ composite powder are prepared by a chemical vapor deposition method; and step three, the carbon-coated nickel nano-particle enhanced silver based composite material is prepared. The method not only has simpletechnical process and low cost, avoids introducing foreign pollutant in every process of preparation technology but also overcomes the defects of non-uniform dispersion of the reinforced phase. The carbon-coated nickel nano-particle enhanced silver-base composite material prepared by the method has good electric property, comprehensive mechanical property and wearing resistance.
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Description

technical field

[0001] The technical solution of the invention relates to the manufacture of silver-based alloys, in particular to the preparation method of carbon-coated nickel nanoparticles reinforced silver-based composite materials. Background technique

[0002] Silver-based composites are heterogeneous mixtures with silver or its alloys as the matrix and particles, whiskers or fibers as the reinforcing phase. Due to its superior electrical and thermal conductivity, silver-based composite materials have been widely used as electrical contact materials for high and low voltage electrical appliances in various industrial fields.

[0003] The earlier silver-based composite material is a typical silver-graphite composite material, which is widely used to make brushes, sliders and contacts. In this type of silver-graphite composite material, the silver matrix is ​​mainly used to maintain the electrical and thermal conductivity of the composite material, and the self-lubricat...

Claims

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