Hydrogen Addition Effect on 3D Porous Titanium Produced by Powder Metallurgy

N.A. Braga; N.G. Ferreira; Francisco Piorino Neto; M.R. Baldan; Carlos Alberto Alves Cairo

doi:10.4028/www.scientific.net/MSF.591-593.289

Paper Titles

Study of the System Mo-Fe-B for Wear-Resistant Materials
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Sintered High Carbon Steels: Effect of Thermomechanical Treatments on their Mechanical and Wear Performance
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Porous Structure and Mechanical Properties of the Cellular Metallic Materials Fabricated by Sintering Al Powder Coated with Sn
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Effect of High Energy Milling Parameters on Nanostructured Cr₃C₂-Ni20Cr Powder Characteristics
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Hydrogen Addition Effect on 3D Porous Titanium Produced by Powder Metallurgy
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Effect of the Dispersion of Nanosized Carbides (NbC - TaC) in the Sintered Microstructure of the Stainless Steel 316L
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New Method of Controlling the Carbon Content of High Chromium Alloyed Powders during High Temperature Sintering
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Pressure Aided Sintering of Ultrafine Powders of WC with Addition of Co
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Metallography Parameters Study of Fe-6.5_wtSi Alloy Obtained by Spray Forming
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Hydrogen Addition Effect on 3D Porous Titanium Produced by Powder Metallurgy

Abstract:

Titanium is an attractive material for structural and biomedical applications because of its excellent corrosion resistance, biocompatibility and high strength-to-weight ratio. Power metallurgy was used in this work to prepare 3D porous titanium. The powders became fragile from hydrogenation process and were able to be used to obtain compacts with different porosities by uniaxial pressing and sintering without applied pressure. Since hydrogen dissolves easily in titanium to form titanium hydrides which have a strong influence on the microstructure coarsening and mechanical properties, the study of the porous compacts hydrogenation was carried out by hydrogenation at different temperatures (870 K up to 1070 K) in a hot filament reactor. Titanium surface morphology changes were investigated by scanning electron microscopy. High resolution x-ray was used to characterize the present phases. Evaluation of the porous titanium hydrides mechanical behavior was realized by flexion assay performed at three points.