Electrocorrosion-resistant treatment method for nickel-plated diamond surface
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A nickel-plated diamond and treatment method technology, applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve the problems of poor electric corrosion resistance, loss of function, easy to corrode the coating, etc., to achieve electric resistance Improved corrosion performance, cost savings, and good electrical corrosion resistance
Active Publication Date: 2019-02-22
江苏三超金刚石工具有限公司
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Problems solved by technology
Untreated ordinary nickel-plated diamond particles have poor electrical corrosion resistance. In the electroplating solution, the coating is easily corroded and becomes bare sand, which loses its effect.
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Embodiment 1
[0016] A treatment method for electro-corrosion resistance of a nickel-plated diamond surface, comprising the steps of:
[0017] Step 1. Prepare a treatment solution: prepare a solution of 10 g / L cobalt sulfate and 5 g / L sodium fluorosilicate, and adjust the pH to 2-4 with nitric acid;
[0018] Step 2, adding nickel-plated diamond particles into the treatment solution described in step 1, heating in a water bath to 60-75°C, and maintaining the temperature;
[0019] Step 3, adding 1 to 2 g / L of potassium perchlorate to the treatment solution and stirring for 8 to 15 minutes to form a cobalt-containing electro-corrosion layer on the surface of the nickel-plated diamond particles;
[0020] Step 4: Precipitate, filter, and dry to obtain treated nickel-plated diamond particles.
Embodiment 2
[0022] A treatment method for electro-corrosion resistance of a nickel-plated diamond surface, comprising the steps of:
[0023] Step 1, configure the treatment solution: configure a solution of 15 g / L cobalt sulfate and 8 g / L sodium fluorosilicate, and adjust the pH to 2-4 with nitric acid;
[0024] Step 2, adding nickel-plated diamond particles into the treatment solution described in step 1, heating in a water bath to 60-75°C, and maintaining the temperature;
[0025] Step 3, adding 10-20 g / L of potassium permanganate to the treatment solution and stirring for 8-15 minutes to form a cobalt-containing electro-corrosion layer on the surface of the nickel-plated diamond particles;
[0026] Step 4: Precipitate, filter, and dry to obtain treated nickel-plated diamond particles.
[0027] Experiments have proved that the nickel-plated diamond particles treated by the above method have high electrical corrosion resistance and certain electroplating activity. They are used in the p...
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Abstract
The invention belongs to the technical field of diamond surface treatment and particularly relates to an electrocorrosion-preventing treatment method for the surface of nickel-plated diamond. The electrocorrosion-preventing treatment method includes the following steps that firstly, a treatment solution is prepared, wherein the solution with 10 g / L to 15 g / L of cobaltous sulfate and 5 g / L to 8 g / L of sodium fluosilicate are prepared, and the pH is adjusted to range from 2 to 4; secondly, a nickel-plated diamond particle is added in the treatment solution of the first step, water bath heating is performed till the temperature reach 60 DEG C to 75 DEG C, and the temperature is maintained; thirdly, a strong oxidant is added to the treatment solution and stirred for 8 min to 15 min, and a cobalt-containing electrocorrosion-preventing layer is formed on the surface of the nickel-plated diamond particle; and fourthly, the nickel-plated diamond particle obtained after treatment is obtained through precipitating, filtering and drying. The nickel-plated diamond particle treated through the above method has high electrocorrosion-preventing performance, meanwhile has certain electroplating activity and has good embedding performance and the long service life when applied in the production process of electroplated diamond wires.
Description
technical field [0001] The invention belongs to the technical field of diamond surface treatment, and in particular relates to a treatment method for electro-corrosion resistance of a nickel-plated diamond surface. Background technique [0002] In the electroplating diamond wire industry, the sanding of the diamond wire is a key process. In the sanding process, the electrocorrosion resistance of diamond particles determines the service life of diamond particles, and the electroplating activity has a decisive effect on the sanding situation. Untreated ordinary nickel-plated diamond particles have poor electrical corrosion resistance. In the electroplating solution, the coating is easily corroded and becomes bare sand, which loses its effect. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a treatment method for electro-corrosion resistance of the nickel-plated diamond surface whi...
Claims
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