Tuesday, 04 February 2020 06:08

The Department of Materials Engineering is discussing a Master thesis on the use of binary titanium alloys in the dental field

Student Wahad Iyad Medhat from the Department of Materials Engineering at the University of Technology received a master’s degree tagged: “Use of binary titanium alloys in the field of dentistry

 Binary Titanium Alloys as Dental Implant Materials

The researcher examined the use of titanium (Ti) in dentistry and medicine in general for transplantation purposes. During the years, pure titanium (Ti) alloys have not only been used commercially, but also some alloys such as Ti and titanium (Ti) alloys (Ti) and its alloys are used in various medical uses, for example prosthesis and orthosis. It is also used in Ti balls and hip sockets as a common alternative where titanium implants can remain in the patient's body for more than 20 years.

  This is due to its high biological compatibility, good mechanical properties, and high corrosion resistance. All samples were prepared using powder metallurgy technology, and the preparation process included pure titanium and titanium alloys - silver, in different proportions where (10, 20 and 30)% of silver was prepared, and titanium-zirconia alloys were also prepared. And at rates (10, 20 and 30)% of zirconia, to verify the effect of adding the element silver and zirconia as a ceramic material on the properties of pure titanium and what it has a direct impact on the physical, chemical and mechanical properties of the resulting alloy. The results of the X-ray diffraction examination and the microstructure showed that pure titanium and titanium alloys - silver, titanium, zirconia, in percentages of (10 and 20)% silver and zirconia as consisting of one phase (the alpha phase) and when the ratio was increased to a limit of (30)% silver and zirconia the appearance of a new interlayer is (Ti2Ag) in the case of silver alloys and (TiZr) 3O in the case of zirconia alloys. The results of the hardness of the silver showed that there is no significant effect of the interlayer (Ti2Ag) in improving the hardness due to its low ratio and the main role of porosity in the samples on the hardness and its abolition of the effect of the intermediate.

Corrosion test results showed good corrosion resistance with silver alloys, which contain (30% Ag) at a sintering degree of 700C ° and a value of (0.091 mpy). Also, silver alloys showed good corrosion resistance at a ratio of (30% Ag) at a sintering degree of 900C ° with a value of ( 0.059 mpy). As for the zirconia alloy, the best corrosion resistance was with a content of (30% ZrO2) when it was cooled with air at a value. (1.347







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