Hot‐Working of Aluminum Oxide: II, Optical Properties
作者:
W. H. RHODES,
D. J. SELLERS,
T. VASILOS,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1975)
卷期:
Volume 58,
issue 1‐2
页码: 31-34
ISSN:0002-7820
年代: 1975
DOI:10.1111/j.1151-2916.1975.tb18976.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Polycrystalline Al2O3fabricated into plates or shapes by hot‐working techniques exhibits high in‐line transmittance from 0.4 to 5.5 μm. Examination of the product by an inverse pole figure technique demonstrated a strong {0001} texture normal to the pressing direction for both equiaxed and textured microstructures. The crystallographic texture was attributed to the dominance of basal slip in deformation. A comparison of transmissivity in the 2 principal directions of a forged plate strongly suggested that a reduction of birefringence resulting from the crystallographic texture was partially responsible for the high transmissivity. The absorption coefficient at 4.5 μm was 0.15 mm‐1, ∼ that for sintered Al2O3and 5 times that fo
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