标题:Low-temperature solid state synthesis and in situ phase transformation to prepare nearly pure cBN
作者:Lian, Gang; Zhang, Xiao; Tan, Miao; Zhang, Shunjie; Cui, Deliang; Wang, Qilong
作者机构:[Lian, Gang; Tan, Miao; Cui, Deliang] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.; [Lian, Gang; Zhang, Xiao; Zhang, Shu 更多
通讯作者:Cui, D
通讯作者地址:[Cui, DL]Shandong Univ, State Key Lab Crystal Mat, Shanda Nanlu 27, Jinan 250100, Peoples R China.
来源:DALTON TRANSACTIONS
出版年:2011
卷:40
期:26
页码:6961-6967
DOI:10.1039/c0dt01823f
摘要:Cubic boron nitride (cBN) is synthesized by a low-temperature solid state synthesis and in situ phase transformation route with NH4BF4, B, NaBH4 and KBH4 as the boron sources and NaN3 as the nitrogen source. Furthermore, two new strategies are developed, i.e., applying pressure on the reactants during the reaction process and introducing the structural induction effect. These results reveal that the relative contents of cBN are greatly increased by applying these new strategies. Finally, almost pure cBN (similar to 90%) crystals are obtained by reacting NH4BF4 and NaN3 at 250 degrees C and 450 MPa for 24 h, with NaF as the structural induction material. The heterogeneous nucleation mechanism can commendably illuminate the structure induction effect of NaF with face center cubic structure. In addition, the induction effect results in the cBN nanocrystals presenting obvious oriented growth of {111} planes.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:1
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959437649&doi=10.1039%2fc0dt01823f&partnerID=40&md5=137c855d9c469f488843223d84c0d5f6
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