Silver tungsten carbide graphene electrical contact material and preparation method thereof
An electrical contact material, tungsten carbide graphite technology, which is applied in the field of silver tungsten carbide graphene electrical contact material and its preparation, can solve the problems of no significant characteristics of anti-fusion welding performance, large difference in the proportion of graphite, increase in product cost, etc. Make up for the effects of large and unstable contact resistance, high density, and improved reliability
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[0051] Such as figure 1 As shown, the figure is a flow chart of the preparation method of the silver tungsten carbide graphene electrical contact material when the tungsten carbide content is 12wt%-25wt% of the present invention. The preparation process of the silver tungsten carbide graphene electrical contact material can be carried out sequentially according to the process , You can also choose individual steps according to actual application requirements.
[0052] Such as figure 2 As shown, this figure is a process flow chart of the preparation process of the silver tungsten carbide graphene electrical contact material when the tungsten carbide content is greater than 25 wt% and less than or equal to 85 wt% of the present invention. The preparation process of the silver tungsten carbide graphene electrical contact material can follow this The process is carried out in sequence, and individual steps can also be selected according to actual application requirements.
[0053] In...
Example Embodiment
[0054] Example 1
[0055] This embodiment provides a preparation of a silver / tungsten carbide / graphene / nickel electrical contact material, and the operation steps are as follows:
[0056] Ⅰ) Material composition of silver / tungsten carbide / graphene / nickel electrical contact materials
[0057] The material components of the silver / tungsten carbide / graphene / nickel electrical contact materials are mainly metallic silver, tungsten carbide, graphene, and metallic nickel. The tungsten carbide content is 12wt%, the graphene content is 0.1wt%, and the nickel content is 0.5wt%. %, the balance is silver.
[0058] Ⅱ) The basic steps of preparing silver / tungsten carbide / graphene / nickel electrical contact materials (see attached for the process flow) figure 1 )
[0059] 1) Prepare 0.1mol / L silver nitrate solution, 0.1mol / L nickel nitrate solution, 0.1mol / L ascorbic acid solution (or one or more of glucose, citric acid or oxalic acid).
[0060] 2) According to the composition of the material, take a q...
Example Embodiment
[0065] Example 2
[0066] The main difference from Example 1 is that: the product in Example 2 has a tungsten carbide content of 25 wt%, a graphene content of 3 wt%, a nickel content of 1.5 wt%, and the balance is silver.
[0067] The basic operation steps for preparing silver / tungsten carbide / graphene / nickel electrical contact material in Example 1 are as follows:
[0068] Ⅰ) Material composition of silver / tungsten carbide / graphene / nickel electrical contact materials
[0069] The material components of the silver / tungsten carbide / graphene / nickel electrical contact materials are mainly metallic silver, tungsten carbide, graphene, and metallic nickel. The content of tungsten carbide is 25wt%, the content of graphene is 3wt%, and the content of nickel is 1.5wt%. , The balance is silver.
[0070] Ⅱ) The basic steps of preparing silver / tungsten carbide / graphene / nickel electrical contact materials (see attached for the process flow) figure 1 )
[0071] 1) Prepare 0.2mol / L silver nitrate solu...
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