ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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) andTi-35%Nb-7%Zr-5%Ta (TNZT) alloys were obtained based on the blended elemental techniquefollowed by a sequence of cold uniaxial and isostatic pressing and sintering. Characterizationinvolved 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 metalswere blasted with Al2O3 particles followed by the application of a coupling agent and opaqueceramic. 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 βphases and Nb and Ta for the TNZT alloy. SEM evaluation (TNZ) depicted remaining pores andbiphasic microstructure formation. SEM micrographs of the TNZT alloy revealed gooddensification and a homogeneous β structure. Shear bond strength data (MPa) were statisticallyanalyzed (one-way ANOVA and Tukey test, α=.05) revealing that TNZT (37.6 ± 2.91) presentedsignificant higher values (p=0.0002) compared to TNZ (26.03 ± 2.92). In conclusion, it seemsthat Ti alloy composition plays a significant role on ceramic bonding
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.530-531.605.pdf
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