The film formed on the surface of titanium implants by surface modification of titanium material makes the implants have better wear resistance and corrosion resistance and biocompatibility. Widely accepted and applied in the clinical medical community. Due to the poor surface treatment technology, no domestic orthopedic titanium implant products with reinforced membranes have been put on the market, and only high-priced imported similar products can be used. The successful application of PTO technology in orthopedic titanium implants will fill the domestic gap. The surface treatment of titanium bone plate and bone nail was carried out by PTO process, and the surface hardness after treatment was increased by about 3 times. After 10 high-temperature and high-pressure sterilization tests, the color and gloss of the treated samples did not change.
Surface treatment of titanium:
1. Enhanced corrosion resistance treatment:
Atmospheric oxidation treatment and anodization treatment; not only can improve corrosion resistance, but also prevent hydrogen embrittlement; in addition, there are platinum plating, palladium oxide/titanium oxide treatment;
2. Improve wear resistance:
Nitriding is carried out at high temperature (800-900 degrees) to make the surface Vickers hardness as high as 700 or more; through surfacing, adding an appropriate amount of nitrogen or oxygen into argon, the surface hardness can be increased by 2-3 times; Through ion plating, a layer of titanium nitride is formed on the surface, with a thickness of about 5 microns, and the surface Vickers hardness is as high as 16000-20000 chrome plating, etc. Through the above simple understanding of titanium metal and its alloys, we will also understand titanium and its alloys. Its alloys play some roles in the production of circuit boards, and will be enlightening in terms of use and maintenance; titanium metal is the third largest future application prospect after magnesium and aluminum as a wide range of metals!
Among the biomedical metal materials, titanium and its alloys are widely used in artificial joints, bone trauma products, spinal orthopedic internal fixation systems, dental implants, dental trays, artificial heart valves, interventional cardiovascular stents, etc. The preferred material for implant products, at present, there is no better metal material than titanium material for clinical use. In the past 10 years, the market growth rate of biomedical materials and products has been maintained at around 20-25%. It is expected that in the next 10-15 years, the medical device industry, including biomedical materials, will reach the scale of the pharmaceutical product market and become the 21st century. pillar industry of the world economy.
Titanium rods and titanium alloy materials have been widely used in biomedicine, daily necessities, and industrial fields in recent years. This project adopts the new technology of titanium alloy surface modification (PTO process) with independent intellectual property rights and international advanced level, which significantly improves the wear resistance, corrosion resistance, biocompatibility, Surface modification makes titanium materials more widely used. PTO technology is an environment-friendly high-tech with high efficiency, energy saving and resource saving.
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