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Surface Characteristics of Stainless Steel Wire for Dental and Medical Use  

최한철 (조선대학교 치과대학 치과재료학교실 및 생체재료나노계면활성화센터)
고영무 (조선대학교 치과대학 치과재료학교실 및 생체재료나노계면활성화센터)
Publication Information
Journal of the Korean institute of surface engineering / v.36, no.4, 2003 , pp. 339-346 More about this Journal
Abstract
Stainless steel wire has been used in industry, dental and medical parts. Especially, it has been used widely for the dental orthodontic materials. The orthodontic wire requires good mechanical properties, such as elastic strength, combined with a high resistance to corrosion. To increase elastic strength and good corrosion resistance, drawing methods(one-step and two-step drawing) have been used and the electrochemical characteristics of drawed wire have been researched using potentiodynamic method in 0.9％NaCl and field emission scanning electron microscope. The one-step drawed wire showed the formation of rough surface. The hardness and tensile strength of two-step drawed wire increased. For the case of two-step drawed wire, the corrosion resistance and pitting potential increased compared with one-step drawed wire due to the drawing induced small surface roughness, such as scratch. The passivation and active current density decreased as the reduction in area for drawing increased.
Keywords
One-Step ＆ Two-Step Drawing; Orthodontic Wire; Stainless Steel Wire; Surface Characteristics;
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