Tags

Type your tag names separated by a space and hit enter

Corrosion behavior of cast Ti-6Al-4V alloyed with Cu.
J Biomed Mater Res B Appl Biomater. 2005 May; 73(2):368-74.JB

Abstract

It has recently been found that alloying with copper improved the inherently poor grindability and wear resistance of titanium. This study characterized the corrosion behavior of cast Ti-6Al-4V alloyed with copper. Alloys (0.9 or 3.5 mass % Cu) were cast with the use of a magnesia-based investment in a centrifugal casting machine. Three specimen surfaces were tested: ground, sandblasted, and as cast. Commercially pure titanium and Ti-6Al-4V served as controls. Open-circuit potential measurement, linear polarization, and potentiodynamic cathodic polarization were performed in aerated (air + 10% CO(2)) modified Tani-Zucchi synthetic saliva at 37 degrees C. Potentiodynamic anodic polarization was conducted in the same medium deaerated by N(2) + 10% CO(2). Polarization resistance (R(p)), Tafel slopes, and corrosion current density (I(corr)) were determined. A passive region occurred for the alloy specimens with ground and sandblasted surfaces, as for CP Ti. However, no passivation was observed on the as-cast alloys or on CP Ti. There were significant differences among all metals tested for R(p) and I(corr) and significantly higher R(p) and lower I(corr) values for CP Ti compared to Ti-6Al-4V or the alloys with Cu. Alloying up to 3.5 mass % Cu to Ti-6Al-4V did not change the corrosion behavior. Specimens with ground or sandblasted surfaces were superior to specimens with as-cast surfaces.

Authors+Show Affiliations

Department of Developmental and Reconstructive Medicine, Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto, Nagasaki, Japan. marie-k@net.nagasaki-u.ac.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

15744719

Citation

Koike, Marie, et al. "Corrosion Behavior of Cast Ti-6Al-4V Alloyed With Cu." Journal of Biomedical Materials Research. Part B, Applied Biomaterials, vol. 73, no. 2, 2005, pp. 368-74.
Koike M, Cai Z, Oda Y, et al. Corrosion behavior of cast Ti-6Al-4V alloyed with Cu. J Biomed Mater Res Part B Appl Biomater. 2005;73(2):368-74.
Koike, M., Cai, Z., Oda, Y., Hattori, M., Fujii, H., & Okabe, T. (2005). Corrosion behavior of cast Ti-6Al-4V alloyed with Cu. Journal of Biomedical Materials Research. Part B, Applied Biomaterials, 73(2), 368-74.
Koike M, et al. Corrosion Behavior of Cast Ti-6Al-4V Alloyed With Cu. J Biomed Mater Res Part B Appl Biomater. 2005;73(2):368-74. PubMed PMID: 15744719.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Corrosion behavior of cast Ti-6Al-4V alloyed with Cu. AU - Koike,Marie, AU - Cai,Zhuo, AU - Oda,Yutaka, AU - Hattori,Masayuki, AU - Fujii,Hiroyuki, AU - Okabe,Toru, PY - 2005/3/4/pubmed PY - 2005/9/24/medline PY - 2005/3/4/entrez SP - 368 EP - 74 JF - Journal of biomedical materials research. Part B, Applied biomaterials JO - J. Biomed. Mater. Res. Part B Appl. Biomater. VL - 73 IS - 2 N2 - It has recently been found that alloying with copper improved the inherently poor grindability and wear resistance of titanium. This study characterized the corrosion behavior of cast Ti-6Al-4V alloyed with copper. Alloys (0.9 or 3.5 mass % Cu) were cast with the use of a magnesia-based investment in a centrifugal casting machine. Three specimen surfaces were tested: ground, sandblasted, and as cast. Commercially pure titanium and Ti-6Al-4V served as controls. Open-circuit potential measurement, linear polarization, and potentiodynamic cathodic polarization were performed in aerated (air + 10% CO(2)) modified Tani-Zucchi synthetic saliva at 37 degrees C. Potentiodynamic anodic polarization was conducted in the same medium deaerated by N(2) + 10% CO(2). Polarization resistance (R(p)), Tafel slopes, and corrosion current density (I(corr)) were determined. A passive region occurred for the alloy specimens with ground and sandblasted surfaces, as for CP Ti. However, no passivation was observed on the as-cast alloys or on CP Ti. There were significant differences among all metals tested for R(p) and I(corr) and significantly higher R(p) and lower I(corr) values for CP Ti compared to Ti-6Al-4V or the alloys with Cu. Alloying up to 3.5 mass % Cu to Ti-6Al-4V did not change the corrosion behavior. Specimens with ground or sandblasted surfaces were superior to specimens with as-cast surfaces. SN - 1552-4973 UR - https://www.unboundmedicine.com/medline/citation/15744719/Corrosion_behavior_of_cast_Ti_6Al_4V_alloyed_with_Cu_ L2 - https://doi.org/10.1002/jbm.b.30225 DB - PRIME DP - Unbound Medicine ER -