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Nickel-Containing Alloys for Medical Application Obtained by Methods of Mechanochemistry and Powder Metallurgy

机译：机械化学和粉末冶金法获得的医用镍合金

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摘要

The methods of mechanochemistry, in combination with cold pressing and pressureless sintering, were used to obtain the most popular nickel-based and nickel-containing alloys used in dentistry and implantology. It was shown that the intense mechanical treatment of Ni, Ti, and Cr powders used as reagents, and the application of the above-mentioned simple powder metallurgical technique for densification allows obtaining NiCr and NiTi alloys with controlled structural properties. The nickel-based dental alloys obtained by mechanically activated sintering possess excellent mechanical, technological, and aesthetic properties. These alloys are suitable as dental restorative materials and for production of porcelain veneered constructions like crowns and bridges using the so-called metal-to-ceramic dental technique. It was shown that the method of mechanically assisted synthesis allows obtaining nanosized NiTi alloy at significantly lower temperature in comparison with the traditional high-temperature alloying. It was also shown that after 40 hours intense mechanical treatment of reagents, a direct synthesis of NiTi alloy proceeds. The product has excellent sinterability which enables to produce bodies with controlled porosity appropriate for application in implantology.
机译：机械化学方法与冷压和无压烧结相结合，用于获得牙科和种植学中最流行的镍基和含镍合金。结果表明，对用作试剂的Ni，Ti和Cr粉末进行了严格的机械处理，以及将上述简单粉末冶金技术用于致密化，可以得到结构性能可控的NiCr和NiTi合金。通过机械活化烧结获得的镍基牙科合金具有优异的机械，技术和美学性能。这些合金适合用作牙科修复材料，并适合使用所谓的金属-陶瓷牙科技术生产瓷饰贴面结构，例如牙冠和牙桥。结果表明，与传统的高温合金化方法相比，机械辅助合成方法可在较低的温度下获得纳米尺寸的NiTi合金。还表明，在对试剂进行40小时的严格机械处理之后，会直接合成NiTi合金。该产品具有出色的可烧结性，可生产出孔隙率可控的物体，适合用于种植学。

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