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Sintering of Chemically Synthesized Lead(II) Selenide Fine Powders
Author(s) -
Unuma Hidero,
Shigetsuka Naoki,
Masui Kanji,
Nagao Jiro,
Takahashi Minoru
Publication year - 1998
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.1151-2916.1998.tb02357.x
Subject(s) - sintering , volatilisation , materials science , relative density , lead selenide , atmospheric temperature range , metallurgy , chemical engineering , chemistry , nanotechnology , physics , organic chemistry , meteorology , engineering
PbSe fine powders were synthesized from a liquid‐phase reaction of lead‐ascorbic acid complex and sodium selenosulfate. The resultant powders were sintered up to nearly theoretical density by controlling the sintering atmosphere and by optimizing the sintering temperature and time. The highest sintered density, 99.7% relative to the theoretical density of 8.27 103 kg/m3, was attained when a powder compact was sintered at 998 K for 6 h under a flow of argon containing 3% H2 gas. Powder compacts could be sintered to higher than 98% when the sintering temperature was 1073 K or lower. When the sintering temperature or time exceeded the optimum range, considerable volatilization of the component occurred, resulting in a decrease in the sintered density. The use of a powder bed was found to be effective in suppressing the volatilization of the component.