Title of article
Surface oxide debonding in field assisted powder sintering
Author/Authors
Anderson، نويسنده , , K.R and Groza، نويسنده , , J.R and Fendorf، نويسنده , , M and Echer، نويسنده , , C.J، نويسنده ,
Pages
5
From page
278
To page
282
Abstract
Field activated sintering techniques (FAST) have been applied to two high-temperature powder materials: tungsten and NiAl. High and atomic resolution electron microscopy (HREM/ARM) of tungsten powder sintered via FAST showed essentially clean boundaries. Analytical transmission electron microscopy (TEM) of FAST sintered NiAl also showed boundaries free of surface oxide layer(s). However, small alumina precipitates were found at and near prior particle (grain) boundaries. The boundary cleaning and precipitation phenomena are manifestations of an applied pulsed electric field.
Keywords
Clean grain boundaries , Field activation , Sintering , HREM
Journal title
Astroparticle Physics
Record number
2055197
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