Do you know the applications of nano diamonds?


The manufacture of nano diamonds, especially its application, has been a hot research topic for scientists from various countries in recent years.
Nano diamond was developed more than 30 years ago, but its application was limited to the field of polycrystalline, polishing agent and other abrasives. With the deepening of people's understanding of the properties of nano diamonds, nano diamonds have begun to be used in metal coatings, lubricants, magnetic recording systems, medicine and other fields, and the application fields are still expanding.

 
Traditional field
1. Nano diamond and metal composite coating
After plating, the service life of the parts is increased by 1 to 9 times, and the thickness of the coating can be reduced by 1 to 2 times. Standard electroplating equipment is used for electroplating.
The average diamond content in the metal coating is 0.3-0.5%; when the coating thickness is 1 micron, the diamond consumption is 0.2 grams (1 carat)/m2.
2. Nano diamond polishing liquid
Nano diamond polishing liquid is widely used in semiconductor silicon wafer polishing, computer hard disk substrate, computer head polishing, precision ceramics, artificial crystal, cemented carbide, gem polishing and other fields due to its excellent performance. Russia uses nano diamonds to polish quartz, optical glass, etc., with a polished surface roughness of 1nm. The application of nano diamonds shows many advantages. Because nano diamonds are ultra-fine and ultra-hard, the problems in optical polishing are easily solved. Fine polishing is a difficult problem in optical polishing. The original process method is to use abrasives repeatedly, which requires tens of hours and is very inefficient. The use of nano diamonds greatly increases the polishing speed. The time required to polish the same workpiece is only ten hours to ten minutes, and the efficiency is increased by tens to hundreds of times.
 
Emerging fields
1. Nano diamond is added to lubricating oil and coolant
The application of nano diamond in lubricating oil, grease and coolant is mainly used in machinery industry, metal processing, engine manufacturing, shipbuilding, aviation, transportation and so on. Adding nano diamond to the lubricating oil can increase the working life of the engine and transmission, save fuel oil, reduce the friction torque by 20-40%, reduce the friction surface wear by 30-40%, and use 0.1-0.2 kg nano diamond for 1000 kg engine oil. The application of nano diamond in lubricating oil must solve the problem of stable suspension. Some companies have solved this problem.
2. Nano diamond-polymer composite
Nano diamond-polymer composites are used in aviation, automobiles, tractors, shipbuilding, medicine, chemical, petrochemical, stop valves, protective coatings and wear-resistant coatings. Fluoroelastic rubber and polysiloxane-based high-efficiency coatings have been developed, and the elastic strength properties of polyisoprene rubber, styrene butadiene rubber, nitrile rubber and natural rubber have been greatly improved. Adding nano diamond to rubber can reduce wear by an average of 2 to 4 times, increase fracture resistance by 30%, and increase damage temperature by 15%.
Epoxy resin glue containing nano diamonds has higher adhesion and cohesion. Adding nano diamonds to the polymer can improve its strength, wear resistance and thermal aging resistance. 1000 kg of rubber (polymer) consumes 1 to 5 kg of nano diamond, and 1000 m2 of polymer coating consumes 1 to 5 kg of diamond.
3. Sintered body
In the field of abrasives, nano diamonds are mainly used to mix with transition metals to produce high-strength and low-porosity diamond sintered bodies. Its micro-hardness can reach 6000~7000kg/mm2. It can be used to process soft or brittle materials and process surface roughness. Very low. If carbon is pre-epitaxially grown or diamond micropowder synthesized by static pressure is added, the microhardness of the diamond polycrystal obtained by sintering under the pressure of 10~12GPa can reach the level of natural diamond single crystal, and it can reach or exceed CB when made into a drill bit to drill high-strength rock formations. -The performance of СП (Russia) polycrystalline. When pressing the diamond micropowder synthesized by static pressure, using nano diamond as a component of the silicon impregnating material can almost double the yield of the sintered body, and increase the compressive strength from 1.7 GPa to 2.2 GPa. This sintered body is used as a cutting element of a drill.
4. Magnetic recording system
Nano diamonds can also be used in magnetic recording media such as magnetic tapes and magnetic disks, acting as wear-resistant additives and physical modifiers. Nano diamond is added when electrochemically coating the composite magnetic recording film to improve the performance of the magnetic recording device. The addition of nano diamond can reduce ferromagnetic material particles, increase recording density, and reduce abrasive wear and friction coefficient.
5. Add to intermetallic compound
Copper, tin, and zinc intermetallic compounds containing nano diamonds can be used as friction parts with very harsh working conditions. At this time, plastic and liquid lubricating materials are often extruded. Nano diamonds are ideal component materials for copper-zinc or copper-tin alloys ( The content does not exceed 15% by volume). After adding nano diamond, the friction force is reduced to 1/2~1/6.
6. Medicine
Nano diamonds can also be used in medicine for the treatment of tumors, gastrointestinal diseases, and skin diseases. It is non-toxic, non-carcinogenic or rusty. Nano diamonds are super active adsorbents and bioactive substance localizers, which can greatly enhance the curative effect of drugs.
 
Ozbo.com (aka. Tanki New Materials Co.Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. As a leading nanotechnology development and product name manufacturer, Tanki New Materials Co.Ltd dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value,and easily cope with various challenges. If you are looking for nano diamonds, please feel free to contact us.
 

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