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Laser Sintering of ZrB 2
Author(s) -
Sun ChenNan,
Gupta Mool C.
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02369.x
Subject(s) - materials science , zirconium diboride , sintering , scanning electron microscope , ceramic , composite material , selective laser sintering , laser , layer (electronics) , particle size , particle (ecology) , diffraction , optics , chemical engineering , oceanography , physics , geology , engineering
Preliminary results about laser sintering of zirconium diboride (ZrB 2 ), a good ultra high‐temperature ceramics candidate, are presented. In order to evaluate a suitable sintering method, single pulsed laser and a concentric dual laser system were carried out. Two different ZrB 2 powders having ∼15 and ∼2 μm particle size were assessed for sintering. Scanning electron microscopy images showed that the concentric dual laser sintered layer using ∼2 μm particle size of ZrB 2 had relatively smooth surface morphology. X‐ray diffraction results confirmed that the sintered layer mainly retained the crystalline phases as the starting powder. In addition, the rapid cooling rate of laser sintering enabled the formation of needle‐like nanostructures at the sintered surface.