The head of the production engineering department receives a patent
Head of the Department of Production and Metallurgy Engineering at the University of Technology, Prof. Mona Khudair Abbas, with the participation of a teacher at the Northern Technical University / Technical College - Kirkuk, Prof.Dr. Jawdat Ali Yaqoub received a patent on (Improving the corrosion resistance and bioactivity of the medical alloy cobalt-chromium-molybdenum by adding nanoparticles of zirconia stabilized yttria in Rinker’s solution) due to the increasing use of the alloy based on cobalt-chromium-molybdenum (CoCrMo) in medical applications such as prosthetics As artificial knee joints, manufacture of shoulder bone replacements and supporting structures for heart valves, and supplies for stabilizing and supporting bone fractures.
The alloy was used in industrial applications such as bearings, engine components and turbines. This study is devoted to the manufacture of this base alloy and composite materials of the base alloy (CoCrMo) reinforced with nanoparticles of yttria-stabilized zirconia (YSZ) in different weight ratios and by powder metallurgy method.
The results showed that the corrosion resistance of the base alloy (CoCrMo) was improved by a very large amount when few percentages of nanoparticles (YSZ) were added, respectively, in Rinker's solution. The addition of these particles also improved the antibacterial activity of the alloy against Staphylococcus aureus bacteria.