Magnesium-silver coating for medical implant materials and preparation method of magnesium-silver coating
An implant material, silver coating technology, used in joint replacement and human tissue defect filling materials and implant materials antibacterial, dental implants, medical materials fields, can solve problems such as poor histocompatibility, infection, etc. , to achieve the effect of promoting wound healing, enhancing the possibility, and promoting the differentiation of fibroblasts
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Embodiment 1
[0025] Put the porous titanium alloy (Ti-6Al-4V) sample into the deposition chamber furnace body 1, put the MgAg alloy raw material into the evaporation chamber furnace body 2, then connect the gas circuit, check the sealing condition, and pump the ultimate vacuum (10 -5 Pa), the whole system was repeatedly purged 3 times with argon to ensure that the oxygen content was minimized. Set the deposition temperature to 20°C, the evaporation temperature to 500°C, and the working pressure to 1×10 -4 Pa, the deposition time is 1 h, the thickness of the deposited metal magnesium-silver layer is 5 μm, and the mass percentage of silver is 2%. In order to confirm the osteogenic effect of the coating, an alkaline phosphatase (ALP) experiment was carried out. After 4 days and 7 days of culture, the color of the coating group was darker than that of the matrix group, indicating that the activity of alkaline phosphatase in the coating group was higher than that of the matrix. group, indicati...
Embodiment 2
[0027] Put the plane pure substrate into the furnace body 1 of the deposition chamber, put the MgAg alloy raw material into the furnace body 2 of the evaporation chamber, then connect the gas circuit, check the sealing condition, and pump the ultimate vacuum (10 -5 Pa), the whole system was repeatedly purged 3 times with argon to ensure that the oxygen content was minimized. Set the deposition temperature to 80°C, the evaporation temperature to 600°C, and the working pressure to 1×10 -3 Pa, the deposition time is 1 h, the thickness of the deposited metal magnesium-silver layer is 50 μm, and the mass percentage of silver is 3%. After X-ray diffraction analysis and scanning electron microscope energy spectrum analysis, it is determined that the coating is magnesium silver. Due to the low content of silver, the X-ray spectrum can only show the diffraction information of metal magnesium.
Embodiment 3
[0029] Put the flat 316L stainless steel sheet into the deposition chamber furnace body 1, put the MgAg alloy raw material into the evaporation chamber furnace body 2, then connect the gas circuit, check the sealing condition, and pump the ultimate vacuum (10 -5 Pa), the whole system was repeatedly purged 3 times with argon to ensure that the oxygen content was minimized. Set the deposition temperature to 100°C, the evaporation temperature to 700°C, and the working vacuum to 1×10 -1 Pa, the deposition time is 1.5 h, the thickness of the deposited metal magnesium-silver layer is 100 μm, and the mass percentage of silver is 4%.
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