%0 Journal Article
%T Synthesis of boron carbide nano particles using polyvinyl alcohol and boric acid
%A Amir Fathi
%A Naser Ehsani
%A Mehdi Rashidzadeh
%A Hamidreza Baharvandi
%J Ceramics-Silik¨˘ty
%D 2012
%I Academy of Sciences of the Czech Republic
%X In this study boron carbide nano particles were synthesized using polyvinyl alcohol and boric acid. First, initial samples with molar ratio of PVA : H3BO3 = 2.7:2.2 were prepared. Next, samples were pyrolyzed at 600, 700 and 800ˇăC followed by heat treatment at 1400, 1500 and 1600ˇăC. FTIR analysis was implemented before and after pyrolysis in order to study the reaction pathway. XRD technique was used to study the composition of produced specimens of boron carbide. Moreover, SEM and PSA analysis were also carried out to study the particle size and morphology of synthesized boron carbide. Finally, according to implemented tests and analyses, carbon-free boron carbide nano particles with an average size of 81 nm and mainly spherical morphology were successfully produced via this method.
%K Nano particle
%K Boron carbide
%K Polyvinyl alcohol
%K Boric acid
%K Heat treatment
%U http://www.ceramics-silikaty.cz/2012/pdf/2012_01_32.pdf