Synthesis and thermal properties of Ca3-xLaxCo4O9 ceramics - 文章详情页

作者：

Zhang, YF (Zhang, YF.) (学者：张跃飞) | Zhang, JX (Zhang, JX.) | Lu, QM (Lu, QM.) | Zhang, QY (Zhang, QY.)

收录：

EI Scopus SCIE

摘要：

Preparation　of　homogeneous　Ca3-xLaxCo4O9　(x　=　0　similar　to　0.4)　single-phase　ceramic　powders　was　described　using　a　tartrate　complex　method.　The　results　show　Ca3Co(4)O(9)　phase　can　be　obtained　by　calcining　the　dry　gel　at　750　degrees　C　for　5　h.　The　Ca3-xLaxCo4O9　ceramics　have　been　prepared　by　spark　plasma　sintering　at　800　degrees　C　for　5　min.　Spark　plasma　sintering　process　is　effective　in　synthesis　of　Ca3-xLaxCo4O9　compact　ceramics.　The　thermal　conductivity　of　Ca3-xLaxCo4O9　bulks　was　investigated　from　room　temperature　to　700　degrees　C.　The　results　show　that　Ca2.7La0.3Co4O9　has　lowest　thermal　conductivity　due　to　the　increasing　of　phonon　scattering　by　La　substitution.

关键词：

Ca3-xLaxCo4O9 sol-gel thermal conductivity

作者机构：

[ 1 ] Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist, Beijing 100022, Peoples R China
[ 2 ] Hebei Normal Univ, Coll Chem, Shijiazhuang 050016, Peoples R China

通讯作者信息：

[Zhang, JX]Beijing Univ Technol, Key Lab Adv Funct Mat, Educ Minist, Beijing 100022, Peoples R China

电子邮件地址：

Zjiuxing@bjpu.edu.cn

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