Localised corrosion behaviour of biomedical implant materials using electrochemical potentiokinetic reactivation and critical pitting potential methods

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Mutlu I., Oktay E.

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, cilt.50, sa.1, ss.72-79, 2015 (SCI-Expanded, Scopus)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 50 Sayı: 1
• Basım Tarihi: 2015
• Doi Numarası: 10.1179/1743278214y.0000000192
• Dergi Adı: CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.72-79
• Anahtar Kelimeler: Ti-Nb-Cu, EPR method, 316 stainless steel, Localised corrosion, Pitting, SIMULATED BODY-FLUID, MECHANICAL-PROPERTIES, MICROSTRUCTURE, ALLOYS, RESISTANCE, SUSCEPTIBILITY, PRECIPITATION, COPPER, TA
• İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

In this study, localised corrosion properties of the biomedical grade Ti-Nb-Cu alloy and AISI 316 austenitic stainless steel specimens were investigated. Ti-Nb-Cu alloy specimens were produced by powder metallurgy method. Nb was used for beta-phase Ti stabiliser. Beta-Ti phase has low Young's modulus close to bone, higher wear resistance and biocompatibility. Cu was added to enhance sinterability of the Ti-Nb-Cu alloy; in addition, Cu is antibacterial. The AISI 316 austenitic stainless steel alloy was investigated as wrought (fully dense) specimens. Localised corrosion properties of the Ti-Nb-Cu and AISI 316 stainless steel alloys were examined by electrochemical potentiokinetic reactivation, critical pitting potential and Tsujikawa-Hisamatsu electrochemical tests in Hank's simulated body fluid solution. Effect of the Cu content of the Ti-Nb-Cu alloys and pH level of the simulated body fluid on the corrosion behaviour of the specimens was studied.