Ceramic Bonding to Biocompatible Titanium Alloys Obtained by Powder Metallurgy

Abstract:

Article Preview

The shear bond strength between a ceramic material (Titankeramik®, Vita Zahnfabrik, Germany) and two biocompatible titanium alloys was investigated. Ti-13%Nb-13%Zr (TNZ) and Ti-35%Nb-7%Zr-5%Ta (TNZT) alloys were obtained based on the blended elemental technique followed by a sequence of cold uniaxial and isostatic pressing and sintering. Characterization involved microstructural analysis (SEM) and crystalline phase identification (XRD). Subsequently, samples were machined to 4 x 4 mm with a base of 5 x 1 mm. The base metals were blasted with Al2O3 particles followed by the application of a coupling agent and opaque ceramic. After ceramic firing, the specimens were loaded in a universal testing machine (0,5mm/min). XRD revealed the presence of α and β-phases for TNZ, and peaks related to β phases and Nb and Ta for the TNZT alloy. SEM evaluation (TNZ) depicted remaining pores and biphasic microstructure formation. SEM micrographs of the TNZT alloy revealed good densification and a homogeneous β structure. Shear bond strength data (MPa) were statistically analyzed (one-way ANOVA and Tukey test, α=.05) revealing that TNZT (37.6 ± 2.91) presented significant higher values (p=0.0002) compared to TNZ (26.03 ± 2.92). In conclusion, it seems that Ti alloy composition plays a significant role on ceramic bonding.

Info:

Periodical:

Materials Science Forum (Volumes 530-531)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

605-611

Citation:

M.C. Bottino et al., "Ceramic Bonding to Biocompatible Titanium Alloys Obtained by Powder Metallurgy", Materials Science Forum, Vols. 530-531, pp. 605-611, 2006

Online since:

November 2006

Export:

Price:

$38.00

[1] K. Wang. Mat. Sci. Eng. A 1-2 (1996), 134.

[2] M. Long, H.J. Rack. Biomaterials 19 (1998), 1621.

[3] E. Eisenbarth, D. Velten, M. Müller, R. Thull, J. Breme. Biomaterials 25 (2004), 5705.

[4] D. Low, T. Sumii, M. Swain. J Oral Rehabil 28 (2001), 239.

[5] D. Kuroda, M. Niinomi, M. Morinaga, Y. Kato, T. Yashiro. Mat. Sci. Eng. A 243 (1998), 244.

[6] Y. Okazaki, S. Rao, Y. Ito, T. Tateishi. Biomaterials 19 (1998), 1197.

[7] G. Berthon. Coord. Chem. Rev 228 (2002), 319.

[8] J. A. Davidson, A. K. Mishra, P. Kovacs, R. A. Poggie. Bio-Medical Mat. Eng. 4 (1994), 231.

[9] H. Matsuno, A. Yokohama, F. Watari, M. Uo, T. Kawasaki. Biomaterials 22 (2001), 1253-62.

[10] M. Geetha, U.K. Mudali, A.K. Gogia, R. Asokamani, B. Raj. Corrosion Sci 46 (2004), 877.

[11] E.B. Taddei, V.A.R. Henriques, C.R.M. Silva, C.A.A. Cairo. Mat. Sci. Eng. C 24 (2004), 683.

[12] M. Bagby, S.J. Marshall, G.W. Marshall. J Prosthet Dent 63 (1990), 21.

[13] ISO 9693: 1999(E). Metal-ceramic dental restorative systems, 2 nd ed. Switzerland, International Organization for Standardization, (1999).

[14] M.G. Tróia Jr, G.E.P. Henriques, M.A.A. Nóbilo, M.F. Mesquita. Dent Mater 19 (2003), 790.

[15] H. Kimura, C.J. Horng, M. Okazaki, J. Takahashi. Dent Mater J 9 (1990), 91.