In:
Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 528 ( 2014-2), p. 168-174
Abstract:
In order to discuss chemical and physical reaction of A95 polycrystalline alumina fibers (PAF) during heat treatment and improve the properties, the influences of the protective atmosphere and heat treatment temperature on properties of PAF were researched. DT-TG, IR, XRD and SEM were adopted to characterize the fibers. The results show that in N 2 atmosphere, the carbonization and oxidation rates of the gel fibers decrease, the thermal decomposition process of the organics is extended and the crystal transformation temperature of alumina is enhanced. When the heat treatment temperature is lower than 1200 °C, the major phases of A95 PAF are mainly δ-Al 2 O 3 and θ-Al 2 O 3 , but no α-Al 2 O 3 appears.
Type of Medium:
Online Resource
ISSN:
1662-7482
DOI:
10.4028/www.scientific.net/AMM.528
DOI:
10.4028/www.scientific.net/AMM.528.168
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2014
detail.hit.zdb_id:
2251882-4
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