Author/Authors :
An، نويسنده , , Y.B. and Oh، نويسنده , , N.H. and Chun، نويسنده , , Y.W. and Kim، نويسنده , , D.K. and Park، نويسنده , , J.S. and Choi، نويسنده , , K.O. and Eom، نويسنده , , T.G. and Byun، نويسنده , , T.H. and Kim، نويسنده , , J.Y. and Byun، نويسنده , , C.S. and Hyun، نويسنده , , C.Y. and Reucroft، نويسنده , , P.J. and Lee، نويسنده , , W.H.، نويسنده ,
Abstract :
A single pulse of 1.0 kJ/0.7 g of atomized spherical Ti powders from 300 μF capacitor was applied to produce a porous-surfaced Ti compact by environmental-electro-discharge-sintering (EEDS). A solid core was automatically formed by a discharge in the middle of the compact which is surrounded by a porous layer, which increased the porous compactʹs compressive yield strength from 52 to 125 MPa. The surface of the EEDS compact has been instantaneously modified by a discharge into the form of primarily Ti nitride from TiO2. Therefore, EEDS can fabricate a Ti porous-surfaced compact with a solid core and simultaneously modify its surface chemistry in times as short as 122 μs.
Keywords :
Titanium , surface diffusion , X-Ray Photoelectron Spectroscopy (XPS) , Sintering , Electro-discharge
