Effect of Cu and Co Additions on Corrosion Behavior of NiTi Alloys for Orthodontic Applications

Abstract:

The aim of this study is to investigate effect of Cu and Co additions on corrosion behavior of NiTi shape memory alloys for orthodontic application. Ni50.6Ti49.4, Ti49Ni46Cu5 and Ti50Ni47Co3 (at%) alloys were prepared. The specimens were melted by arc-melting furnace and homogenized at 800oC for 3.6 ks. Transformation temperatures were analyzed by differential scanning calorimeter (DSC). The corrosion behavior was assessed electrochemically in artificial saliva (pH 5.35) at 37oC. Open circuit potential (OCP) was monitored 3.6 ks followed by potentiodynamic techniques. The results show that all of specimens revealed transformation temperature close to oral temperature which may be utilized as orthodontic wire. Surface roughness was measured in order to ensure that there is no significant difference which might affect corrosion resistance. It is seen that by adding Co and Cu into NiTi alloys, the corrosion potential (Ecorr) and pitting corrosion potential (Ebreak) increase resulting in lower corrosion rate. Conceivably, Co and Cu additions considerable affect the corrosion behavior of NiTi alloys by improving corrosion resistance in artificial saliva.

• Periodical: Advanced Materials Research (Volumes 378-379)
• Pages: 650-654
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.378-379.650
• Online since: October 2011
• Authors: A. Phukaoluan, Anak Khantachawana, S. Dechkunakorn, N. Anuwongnukroh, P. Santiwong, Julathep Kajornchaiyakul
• Keywords: Co Addition, Corrosion Behavior, Cu Addition, NiTi Alloy, Orthodontic

References

[1] Andreasen GF. and Hilleman TB., An evaluation of 55 cobalt substituted Nitinol wire for use in orthodontics. J Am Dent Assoc Vol. 82 (1997), pp.1373-5

DOI: 10.14219/jada.archive.1971.0209

[2] Brantley WA., Orthodontic wires. In:Brantly WA, Eliades T, editor. Orthodontic materials: scientific and clinical aspects. New York:Thieme (2000), pp.77-103

DOI: 10.1055/b-0034-43092

[3] Kusy RP., A review of contemporary archwires: their properties and characteristics., Angle Orthod Vol. 67 (1997), pp.197-207

[4] Rondelli G., Corrosion resistance test on NiTi shape memory alloys., Biomaterials, (1996), pp.2003-8

[5] Buehler WJ., Frederick FE., A summary of recent research on the nitinol alloys and their potential application in ocean engineering., Ocean Eng, (1968), pp.105-8

DOI: 10.1016/0029-8018(68)90019-x

[6] Shabalovskaya SA., On the nature of the bio compatibility and on medical applications of NiTi shape memory and superelastic alloys., Biomed Mater Eng, (1996), pp.267-89

DOI: 10.3233/bme-1996-6405

[7] Gil FJ, Planell JA. Effect of copper addition on the superelastic behaviour of NiTi shape memory alloys for orthodontic applications. J Biomed Mater Res Vol. 48 (1999), p.682–8

DOI: 10.1002/(sici)1097-4636(1999)48:5<682::aid-jbm12>3.0.co;2-m

[8] Gil FJ, Manero JM, Planell JA. Relevant aspects in the clinical applications of NiTi shape memory alloys. J Mater Sci: Mater Med Vol. 7 (1996), p.403–6

DOI: 10.1007/bf00122008

[9] Wever DJ, Veldhuizen AG, Sanders MM, Schakenrad JM, Horn v JR. The cytotoxic, allergic and genotoxic activity of a nickel – titanium alloy. Biomaterials Vol. 18 (1997), p.1115–20

DOI: 10.1016/s0142-9612(97)00041-0

[10] Ryh.anen J, Kallioinen M, Tuukkanen J, Lehenkari P, Junila J, Niemel.a E, Sanvik P, Serlo W. Bone modelling and cell–material interface response induced by nickel–titanium shape memory alloy after periosteal implantation. Biomaterials Vol. 20 (1999), p.1309–17

DOI: 10.1016/s0142-9612(99)00032-0

[11] Wever DJ, Veldhuizen AG, de Vries J, Busscher HJ, Uges DRA, van Horn JR. Electrochemical and surface characterization of a nickel–titanium alloy. Biomaterials Vol. 19 (1998), p.761–9

DOI: 10.1016/s0142-9612(97)00210-x

[12] Mohammed Es-Souni, et al., On the properties of two binary NiTi shape mempry alloys. Effects of surface finish on the corrosion behavior and in vitro biocompatibility, (2002), pp.2887-94

DOI: 10.1016/s0142-9612(01)00416-1

[13] Fathi MH, Salehi M, Saatchi A, Mortazavi V, Moosavi SB. In vitro corrosion behavior of bioceramic, metallic, and bioceramic-metallic coated stainless steel dental implants. Dental Mater Vol. 19 (2003), p.188–98

DOI: 10.1016/s0109-5641(02)00029-5

[14] Keun-Taek Oh, Young-Sik Kim, Yong-Soo Park, Kyoung-Nam Kim. Properties of Super Stainless steels for Orthodontic Applications. Interscience (2003), pp.183-194

[15] Oshida Y, Miyazali S. Corrosion and biocompatibility of shape memory alloys. Corros Eng Vol. 40 (1991), pp.1009-25

[16] Ryhanen J, Niemi E, Serlo W, Niemela E, Sandvik P, Pernu H, Salo T. Biocompatibility of nickel-titanium shape memory metal and its corrosion behavior in human cell cultures. J Biomed Mater Res Vol. 35 (1997), pp.451-7

DOI: 10.1002/(sici)1097-4636(19970615)35:4<451::aid-jbm5>3.0.co;2-g

[17] Wever DJ, Veldhuizen AG, Sanders MM, Schakenraad JM, Van Horn JR. Cytotoxic, allergic and genotoxic activity of a nickel-titanium alloy. Biomaterials Vol. 18 (1997), pp.1115-20

DOI: 10.1016/s0142-9612(97)00041-0