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Information Seminar Paper

Title

FOAMING PROCESS EVALUATION OF TITANIUM SCAFFOLDS DURING HEATING IN VACUUM

Writers

NADDAF DEZFULI SINA | SADRNEZHAAD SEYYED KHATIBOLISLAM

Pages

 Start Page | End Page

Keywords

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Abstract

 TITANIUM FOAMS NOT ONLY POSSESS WIDE APPLICATION IN MILITARY, BUT ALSO IN BIOMEDICAL ENGINEERING BECAUSE OF ITS HIGH STRENGTH TO DENSITY RATIO, EXCELLENT CORROSION RESISTANCE AND GOOD BIOCOMPATIBILITY. HIGH REACTIVITY OF TITANIUM POWDERS IS THE FIRST PROBLEM WE ENCOUNTER IN ORDER TO UTILIZING PURE TITANIUM. HENCE, IN THIS STUDY A NEW METHOD FOR FABRICATION OF TITANIUM FOAMS HAS BEEN PROPOSED. THEN, THERMAL BEHAVIOR OF TITANIUM DURING HEATING IN ARGON, NITROGEN AND VACUUM HAS BEEN INVESTIGATED USING SIMULTANEOUS THERMAL ANALYZER (STA), X-RAY DIFFRACTION (XRD) AND ENERGY DISPERSIVE SPECTROSCOPY (EDS). STRUCTURAL PROPERTIES OF THE FOAMS FABRICATED USING THIS NOVEL METHOD HAS BEEN INVESTIGATED USING SCANNING ELECTRON MICROSCOPY (SEM). RESULTS SHOWED THAT USING VACUUM ATMOSPHERE GREATLY DECREASED OXIDE PHASES FORMED ON THE SURFACE OF THE FOAMS. TITANIUM HYDRIDE HAS TWO STEP DECOMPOSITION IN VACUUM, ARGON AND NITROGEN ATMOSPHERES.

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