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Titanium nitride ceramics are now widely used in the market

wallpapers Industry 2021-01-14
Titanium nitride (TiN), as a new type of multifunctional cermet material, has excellent characteristics such as high melting point, high hardness, wear resistance, good chemical stability, good electrical and thermal conductivity and optical properties. Its melting point is 2930~2950℃. It is a good conductor of heat and electricity. It has superconductivity at low temperatures. It is a material for making jet engines. With the development and breakthrough of science and technology, it plays different roles in many fields. The unique golden yellow metallic luster makes titanium nitride also have applications in the field of gold substitute decoration.
 
Application in tool manufacturing
 
Titanium nitride ceramic coating has a golden yellow appearance. Although it has the advantage of optimizing the appearance when coated on the tool, the main function is not for decoration. Its hardness value is as high as 2500 or more in the Webster hardness (HV). The thickness of the coating on the tool is generally 3 to 5 microns, which has higher wear resistance and heat resistance than the original product without coating processing, and has a longer service life. Applying this technology to machinery and equipment in industrial production, for example, coating titanium nitride on gear hobs can extend its life by 3 to 4 times, and can increase the cutting speed or feed rate even more when cutting gears. Thereby reducing material machining time. The utilization rate of coated high-speed cutters in industrialized countries has accounted for 70% of high-speed cutters. Almost all of the automotive industry uses coated high-speed steel cutters to process gears, and the hobbing speed can reach 70~150m/mm.
 
Application in biomedicine
 
The occluder used for the treatment of atrial septal defect, ventricular septal defect and patent ductus arteriosus in congenital heart disease has been widely used in clinical medicine as an implant for interventional therapy. However, common concentric occluders are mostly made of nickel-titanium alloy materials, which contain as much as 55% nickel. Excessive nickel can cause allergies and poisoning to the human body, and long-term effects are more likely to induce cancer. The surface purification membrane of the occluder nickel-titanium alloy can be destroyed, and the release of internal nickel ions in the complex environment of the human body will increase the nickel content, which further causes the tissue compatibility of the occluder to deteriorate.
 
Relevant studies have shown that because titanium nitride (TiN) is a material with good biocompatibility (which was once used for coronary stents), the thrombus origin is much lower than that of nickel-titanium itself. As early as 2004, Lifetech Technology (Shenzhen) Co., Ltd. developed a Cera ceramic membrane occluder with high-energy ion precipitation coating technology in response to this medical problem. Based on the original nickel-titanium alloy occluder design Keep the original atrial septal occluder, ventricular septal occluder, and patent ductus arteriosus occluder design shape, use plasma technology to evenly wrap a layer of titanium nitride TiN film on the surface of its nickel-titanium alloy, and use ion technology to make metal The titanium coating is combined with C, N, O and other compounds into a biological coating, which greatly improves the corrosion resistance of the occluder and the compatibility of biological tissues and blood.
 
Application of film on the front of the car
 
It is even more important to apply the film in the main radiation area of ​​the front windshield of the car. After all, the car film can block ultraviolet rays, block some heat, prevent injury and anti-glare caused by sudden glass burst, and reduce the contents and personnel in the car. The effect of damage caused by ultraviolet radiation. At present, there are many types of car insulation films on the market, and they are different in material function, service life, and effect. Based on nano titanium nitride, the nano-ceramic film produced by the combination of magnetron sputtering technology and metal nitriding technology is not only durable, not easy to corrode, but also has the advantages of not shielding mobile phone signals and good heat dissipation. Product performance To a large extent, it is superior to other types of car insulation film.

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