Diamond binding film technology

Abstract

The invention relates to a diamond binding film technology, by which a layer of titanium-silicon nitride film is plated on diamond crystal surface. The technology mainly comprises the following steps: washing diamond until diamond surface reaches sub-atomic level or atomic level; and charging and adjusting an automatic vibrating and rolling device inside a vacuum coating furnace and plating. Through the technology, diamond surface is gold purple in color, film coverage rate reaches 98%, film thickness is 0.5-1.0 microns, hardness is 2000 HV, and the film will not change color, be carbonized or fall off when sintered at 850-900 DEG C. The problem that a film obtained by other coating methods is thick, easy to be blunt and easy to fall off is solved. Binding force of diamond with a base material during tool manufacturing process is greatly enhanced. Thus, use effect is raised by 20-50%. The technology is an ideal method for raising use effect of a diamond product.

Description

technical field [0001] The invention relates to a diamond bonding film technology for coating silicon nitride titanium on a diamond single crystal, which belongs to the surface strengthening treatment technology of metal and nonmetal substances. Background technique [0002] In industrial production, diamond is mainly used to manufacture tools, such as knives, grinding tools, drills, etc. In order to improve the bonding force of diamond single crystal with the base material when making tools and prevent its carbonization and reduction at high temperatures, diamond crystals have been used A layer of copper, nickel, chromium and other thin films are electroplated on the top, but the obtained thin films have thick film layers and low hardness. The tools and utensils made with it are prone to blunt during use, and the diamond grains are easy to fall off. After retrieving the Chinese Invention Patent Bulletin and various documents, there have been no public reports and literature...

AI Technical Summary

Problems solved by technology

[0004] Vacuum ion plating is based on vacuum technology, using physical and chemical methods, and absorbing a series of new technologies such as electron beam, ion beam plasma, radio frequency, magnetron, etc., to coat a layer of bonding film on the diamond crystal, It can not only embedding the diamond crystal to prevent its carbonization reduction, but also solve the problem that non-metal and metal are not easy to bond, so that the holding force is enhanced, thereby greatly improving the use effect of diamond tools, but diamond is a granular crystal , to make it coated in the vacuum furnace, the key issue is to allow each surface of each diamond to have the opportunity to contact the ion beam. Therefore, we specially designed the vacuum coating furnace according to the existing conditions of the vacuum furnace and the needs of the coating work. The advanced automatic vibration and tumbling device ensures that the diamonds roll up and down evenly in each material tray, vibrate back and forth, and do not fly out of the material tray, and do not make the grades and materials mixed.