Characteristics of titanium Grade 2 and evaluation of corrosion resistance
Journal Title: Archives of Materials Science and Engineering - Year 2016, Vol 77, Issue 2
Abstract
Purpose: The paper attempts to improve the properties of titanium Grade 2 by the use of the injection casting method with rapid cooling.Design/methodology/approach: Microstructural observations by using an optical microscope, microhardness studies, X-ray qualitative analysis as well as corrosion resistance tests were carried out. Corrosion resistance tests were conducted by measuring the open circuit potential and measuring the resistance to corrosion by the method of anodic polarization curves in a potential range close to the corrosion potential.Findings: Studies have shown that the application of the abovementioned preparation method affect the microstructure of the finished item. There has been a fragmentation of the structure and the formation of dendrites. Those changes have improved corrosion resistance and increase microhardness. There were no changes in the phase composition.Research limitations/implications: Studies were performed only in the Ringer's solution indicating a potential use of this material as a biomaterial. Further research should be conducted in more aggressive environments especially for the energy industry and chemical industry.Practical implications: The application of injection casting carries some complications, which mainly relate to quartz capillary where ingot is melted. Titanium as a reactive element strongly absorbs silicon out of the capillary causing changes in the chemical composition inthe surface layer of the final element. The addition of silicon in the surface layer may affecton obtained results.Originality/value: Using the production method indicates its use in future in many industries.
Authors and Affiliations
J. Klimas, A. Łukaszewicz, M. Szota, K. Szota
Keywords
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