In:
Journal of the American Ceramic Society, Wiley, Vol. 99, No. 8 ( 2016-08), p. 2601-2606
Abstract:
Fluffy and homogenous sucrose‐coated‐γ‐Al 2 O 3 structured precursor was prepared by drying ethanol‐water sucrose/Al 2 O 3 suspension, in which the ethanol content of 85 vol% was optimized. Using the C/Al 2 O 3 mixture pyrolyzed from such precursor with 23.2 wt% sucrose, single‐phase AlON powder was synthesized by two‐step carbothermal reduction and nitridation method at 1550°C for 2 h and 1700°C for another 1.5 h. The particle size of the AlON powder was around 0.6–1.0 μm. Compared with those synthesized by the traditional approaches with mechanical C/Al 2 O 3 , Al/Al 2 O 3 , or AlN/Al 2 O 3 mixtures, the synthesis temperature was reduced about 50°C, and the AlON powder was fine and exhibited good dispersity. Such superiority of this method was attributed to that the pyrolyzed carbon film on Al 2 O 3 particle greatly restrained Al 2 O 3 coalescence during the thermal treatment.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2016.99.issue-8
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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