Synthesis of B-C-N nanocrystalline particle by mechanical alloying and spark plasma sintering

• Published in: Journal of materials science Vol. 41; no. 24; pp. 8352 - 8355
• Main Authors: Luo, Xiaoguang, Zhang, Jiuxing, Guo, Xiaoju, Zhang, Guanglei, He, Julong, Yu, Dongli, Liu, Zhongyuan, Tian, Yongjun
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01.12.2006; Springer Nature B.V
• Subjects: Boron nitride; Cross-disciplinary physics: materials science; rheology; Diffraction; Eels; Energy dissipation; Energy transmission; Exact sciences and technology; Grain size; Graphite; Heating rate; Materials science; Mechanical alloying; Nanocrystalline materials; Nanocrystals; Nanoscale materials and structures: fabrication and characterization; Physics; Plasma sintering; Precursors; Spark plasma sintering; Synthesis; Transmission electron microscopy; X-ray diffraction; Plasma; Crystallization; XRD; Amorphous state; Experimental study; Mechanical alloying; Boron Carbonitrides; Fabrication; Nanoparticles; Electron energy loss spectra; Spark discharge; Transmission electron microscopy; Sintering; Nanocrystal
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-006-1078-4

B–C–N nanocrystalline particles have been synthesized by Spark plasma sintering (SPS) from the amorphous BC2N (a-BC2N) precursor, which were prepared by the mechanical alloying (MA) method from a mixture of graphite and hexagonal boron nitride (h-BN). The syntheses have been performed in the temperature range from 1200 to 1900 °C at the heating rate of about 300 °C min−1 with loads of 30 MPa. The obtained product has been checked by X-ray diffraction (XRD), transmission electron microscopy (TEM), and electron energy loss spectrum (EELS). It has been found that the B–C–N nanocrystalline particles can be synthesized at the temperature of 1600 °C with the grain size less than 50 nm, and at the temperature of 1900 °C, the a-BC2N is decomposed into graphite and h-BN.