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Corrosion resistance and ion dissolution of titanium with different surface microroughness.
Biomed Mater Eng. 1998; 8(2):61-74.BM

Abstract

In vitro corrosion resistance and ion dissolution of commercial pure titanium with different surface microroughness are studied adopting constant potential meter and atomic absorption spectroscopy. In terms of the surface roughness, titanium samples are divided into 5 groups: smooth surface, machining surface, 2 different microroughness surfaces and macrorough surface. Each group contains three category samples under different treatments: natural oxidation (24 h exposure to air), oxidation under 400 degrees C (400 degrees C, 45 min thermal oxidation), oxidation under 700 degrees C (700 degrees C, 45 min thermal oxidation). In Hanks corrosion media, comparative studies through constant potential anode polarization curves and titanium release rates of the 5 groups of Ti samples demonstrates that oxidation under 400 degrees C best increase corrosion resistance and decrease ion release sharply, oxidation under 700 degrees C is better than natural oxidation. Ti samples with a different surface roughness all have good corrosion resistance and their corrosion resistance drop with the raising of surface roughness. Comparing with macrorough surface and machining surface, microrough surfaces have better corrosion resistance and a lower ion release rate which are similar to those of smooth surfaces. Moreover, the corrosion resistance of machining surface Ti is the lowest. It is hypothesized that surface treatment methods such as surface thermal oxidation, surface aging and so on will improve the corrosion resistance and decrease the ion release rate of rough surface effectively by increasing the thickness of surface protection film, improving its structural uniformity and facilitating the formation of ordered, compact surface protection film.

Authors+Show Affiliations

Department Stomatology, Zhejiang Medical University, Hangzhou, P.R. China.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

9830989

Citation

Chen, G, et al. "Corrosion Resistance and Ion Dissolution of Titanium With Different Surface Microroughness." Bio-medical Materials and Engineering, vol. 8, no. 2, 1998, pp. 61-74.
Chen G, Wen X, Zhang N. Corrosion resistance and ion dissolution of titanium with different surface microroughness. Biomed Mater Eng. 1998;8(2):61-74.
Chen, G., Wen, X., & Zhang, N. (1998). Corrosion resistance and ion dissolution of titanium with different surface microroughness. Bio-medical Materials and Engineering, 8(2), 61-74.
Chen G, Wen X, Zhang N. Corrosion Resistance and Ion Dissolution of Titanium With Different Surface Microroughness. Biomed Mater Eng. 1998;8(2):61-74. PubMed PMID: 9830989.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Corrosion resistance and ion dissolution of titanium with different surface microroughness. AU - Chen,G, AU - Wen,X, AU - Zhang,N, PY - 1998/11/27/pubmed PY - 1998/11/27/medline PY - 1998/11/27/entrez SP - 61 EP - 74 JF - Bio-medical materials and engineering JO - Biomed Mater Eng VL - 8 IS - 2 N2 - In vitro corrosion resistance and ion dissolution of commercial pure titanium with different surface microroughness are studied adopting constant potential meter and atomic absorption spectroscopy. In terms of the surface roughness, titanium samples are divided into 5 groups: smooth surface, machining surface, 2 different microroughness surfaces and macrorough surface. Each group contains three category samples under different treatments: natural oxidation (24 h exposure to air), oxidation under 400 degrees C (400 degrees C, 45 min thermal oxidation), oxidation under 700 degrees C (700 degrees C, 45 min thermal oxidation). In Hanks corrosion media, comparative studies through constant potential anode polarization curves and titanium release rates of the 5 groups of Ti samples demonstrates that oxidation under 400 degrees C best increase corrosion resistance and decrease ion release sharply, oxidation under 700 degrees C is better than natural oxidation. Ti samples with a different surface roughness all have good corrosion resistance and their corrosion resistance drop with the raising of surface roughness. Comparing with macrorough surface and machining surface, microrough surfaces have better corrosion resistance and a lower ion release rate which are similar to those of smooth surfaces. Moreover, the corrosion resistance of machining surface Ti is the lowest. It is hypothesized that surface treatment methods such as surface thermal oxidation, surface aging and so on will improve the corrosion resistance and decrease the ion release rate of rough surface effectively by increasing the thickness of surface protection film, improving its structural uniformity and facilitating the formation of ordered, compact surface protection film. SN - 0959-2989 UR - https://www.unboundmedicine.com/medline/citation/9830989/Corrosion_resistance_and_ion_dissolution_of_titanium_with_different_surface_microroughness_ L2 - https://content.iospress.com/openurl?genre=article&issn=0959-2989&volume=8&issue=2&spage=61 DB - PRIME DP - Unbound Medicine ER -