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A general method towards transition metal monoboride nanopowders

Weixiao Cao, Ya'nan Wei, Xin Meng, Yuexia Ji and Songlin Ran


The borothermal reduction of metal oxides in molten salts is reported as a general method towards transition metal monoboride nanopowders. Crystallized CrB powders with average particle sizes of 40 – 50 nm were synthesized at a lowest temperature of 800 °C. The presence of molten salts greatly inhibited the formation of impurities and the grain growth of CrB particles. NbB and TaB powders were also successfully synthesized by the same method at 1 000 °C and 1 100 °C, respectively.

*Correspondence address, Dr. Songlin Ran, School of Materials Science and Engineering, Anhui University of Technology, 59 Hudong Road, Ma'anshan 243002, P. R. China, Tel.: +86 555 2311870, Fax: +86 555 2311570, E-mail:


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Received: 2016-11-25
Accepted: 2017-01-17
Published Online: 2017-03-31
Published in Print: 2017-04-13

© 2017, Carl Hanser Verlag, München