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CP Ti Fabricated by Low Temperature Extrusion of HDH Powder: Application in Dentistry

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Abstract:

Powder metallurgy (PM) commercial purity titanium (CP Ti) was fabricated and studied, with an aim of utilization for dental application. PM CP Ti was manufactured using a cost effective approach, where affordable hydrogenation–dehydrogenation (HDH) process Ti 99.4 wt.% powder was consolidated via the following sequence of PM techniques: cold isostatic pressing, warm vacuum pressing at 420 °C and warm direct extrusion at 500 °C. The paper presents the first studies on processing, microstructure, testing of mechanical properties, fatigue performance and bonding strength with different veneer coatings. By employed consolidation process sound material with low porosity (1.5%) and sustained oxygen content (0.21 wt.%) was attained. The tensile properties obtained for PM CP Ti (UTS = 701 MPa, YS0.2 = 512 MPa, ε = 13 %) were improved over to those for cast / milled CP Ti Grade 4 reference, the material commonly used in dentistry. Tested using the ISO 14801 standard for dental implants, the samples machined from PM CP Ti showed fatigue performance similar to CP Ti Grade 4. PM CP Ti used as a metal base material in restoration metal – ceramic systems showed very good bond strength with three commercially available veneering ceramics and complied with the ISO 9693 standard. Within the limitations of this paper, the preliminary results demonstrated that performance of economic PM CP Ti is equal or superior to CP Ti Grade 4 reference material and it can be used in prosthodontics.

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Periodical:

Key Engineering Materials (Volume 704)

Pages:

351-359

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.704.351

Citation:

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Online since:

August 2016

Authors:

Martin Balog*, Josko Viskic, Peter Krížik, Zdravko Schauperl, Mateja Snajdar, Zlatko Stanec, Amir Catic

Keywords:

Dentistry, Extrusion, Mechanical Properties, Powder metallurgy, Prosthodontic, Titanium, Veneering

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* - Corresponding Author

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