[Study on mechanical properties of titanius alloy samples fabricated with vacuum-sintered powder metallurgy].
OBJECTIVE
To investigate mechanical properties of titanium alloy samples with vacuum-sintered powder metallurgy.


METHODS
Titanium based metal powder mixtures were compacted into green bodies in the double action press and sintered at 1000 degrees centigrade for 15 minutes in a vacuum furnace at 0.025Pa. Then the mechanical properities of the sintered compacts were evaluated.


RESULTS
Compressive strength of sintered bodies were 111-921MPa when compacted pressure increased from 100MPa to 300MPa. Compressive strength of sintered bodies increased with compacted pressure. Three particle sizes of titanium powder, -160 mesh, -200/+300 mesh, -300 mesh, did not affect the mechanical properties of sintered bodies. The compressive strength of sintered bodies with the plating of copper and tin were higher than those without the plating. Three-point bending strength and elastic modulus of sintered bodies were respectively 102-182MPa and 12193-26630 when compacted pressure affect the mechanical properties pf sintered compacts. Titanium powder plated with copper and tin is compacted and sintered easily, the mechanical properties of sintered compacts are greatly improved.
Department of Prosthodontics, College of Stomatology, West China University of Medical Science, Chengdu 610041, China.
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Chao
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Ding
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X
Liang
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Han