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Joining of Porous Alumina with a CaO – Al 2 O 3 – SiO 2 Glass‐Ceramic
Author(s) -
Zhu Weiwei,
Chen Jichun,
Jiang Chunhai,
Hao Chuanyong,
Zhang Jinsong
Publication year - 2013
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/jace.12310
Subject(s) - crystallization , materials science , thermal shock , substrate (aquarium) , chemical engineering , composite material , oceanography , engineering , geology
A CaO – Al 2 O 3 – SiO 2 ( CAS )‐based glass interlayer was developed for joining of porous alumina membrane tubes with dense alumina in this work. The results indicated that the interfacial microstructure of the joint was highly sensitive to the quench rate from the joining temperature, which rendered crystallization of CaTiSiO 5 at a fast quench rate but CaAl 2 Si 2 O 8 at a slow quench rate due to the interfacial reaction between the CAS glass interlayer and the substrate. An extra crystallization treatment during quench, i.e., dwelling at 800°C–900°C for 2 h, produced a multiphase interlayer consisting of LiAlSi 2 O 6 , CaTiSiO 5 , and CaAl 2 Si 2 O 8 . All joints were evaluated by the thermal shock test. The results showed that the LiAlSi 2 O 6 ‐containing joint interlayer had much lower thermal shock resistance than those without LiAlSi 2 O 6 .