Method for plating surface layer of diamond powder with non-magnetic metal

Abstract

The invention belongs to the field of materials, and discloses a method for plating a surface layer of diamond powder with non-magnetic metal. The method comprises the following steps that (1) the diamond powder is cleaned; and (2) sputtering is carried out on the surface layer of the diamond powder with the non-magnetic metal by adopting a magnetron sputtering method, and the surface layer of thediamond powder is plated with a film layer, wherein the specific parameters of the magnetron sputtering method in the step (2) are as follows: the working atmosphere is Ar, the flow rate of the Ar is10-30 sccm, the working air pressure is 3*10<-4>-1*10<-3> Pa, the magnetron sputtering power is 100-300 W, and the magnetron sputtering voltage is 300-400 V, the sputtering time is 20-100 minutes, and the heating temperature of a vacuum chamber is 25-30 DEG C. According to the method, by adopting a magnetron sputtering mode, metal with different melting points, such as titanium, aluminum, molybdenum and tungsten, can be deposited; the thickness of the thin film can be accurately controlled, and the film layer is uniform. and meanwhile, a plating layer and a substrate are good in binding force, the density is high, pores are few, and the purity of the film layer is high.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a method for coating non-magnetic metal on the surface of diamond powder. Background technique [0002] Diamond is widely used in various fields because of its excellent physical properties. Plating non-magnetic metals on the surface of diamond powder can further improve the performance of diamond, forming alloy reinforcements, abrasive grains, surface materials or electronic component materials, etc., which is of great significance in the field of materials. [0003] There are many techniques for coating non-magnetic metals on the surface of diamonds. In addition to traditional electroplating methods, there are also chemical vapor deposition, salt bath coating methods, covering combustion coating methods, vacuum micro-evaporation coatings, etc. Among them, the operation of electroplating or electroless plating is highly technical, and the ratio of the solution must be precisely control...

AI Technical Summary

Problems solved by technology

However, when magnetron sputtering is used to coat thinner films, it is still impossible to accurately control the thickness of the film, and it is also difficult to achieve uniform coating.

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