Carbothermal Reduction Synthesis of Zirconium Diboride Powders Assisted by Microwave

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ZrB2 powder has been prepared through carbothermal reduction boronization of zirconia/boron carbide/carbon mixtures heating assisted by microwave. The powder characteristics were investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), nitrogen absorption (BET model) and scanning electron microscope (SEM). The experiments indicated that excessive B4C is necessary and the carbothermic reaction reacts severely at a higher temperature and complete at 1600oC. The crystallite size has ranged from 50-100 nm, according to the calculated surface area. Highest purity of ZrB2 powder, which was synthesized at 1600oC, is 99.67 wt%. The surface area of ZrB2 powder synthesis at 1600oC is 18.33 m2/g. Vibration of temperature should affect the purity of ZrB2, as the sub reaction acted.

Info:

Periodical:

Advanced Materials Research (Volumes 105-106)

Edited by:

Wei Pan and Jianghong Gong

Pages:

203-206

DOI:

10.4028/www.scientific.net/AMR.105-106.203

Citation:

H. L. Wang et al., "Carbothermal Reduction Synthesis of Zirconium Diboride Powders Assisted by Microwave", Advanced Materials Research, Vols. 105-106, pp. 203-206, 2010

Online since:

April 2010

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Price:

$35.00

[1] Q. Qu, J.C. Han, W.B. Han, X.H. Zhang, C.Q. Hong: Mater. Chem. Phys. Vol. 110 (2008), p.216.

[2] F. Monteverde, A. Bellosi, L. Scatteia: Mater. Sci. Eng. A Vol. 485 (2008), p.415.

[3] S.C. Zhang, G. E. Hilmas, and W. G. Fahrenholtz: J. Am. Ceram. Soc. Vol. 91(2008), p.26.

[4] Y.J. Yan, H. Zhang, Z.R. Huang, et al.: J. Am. Ceram. Soc. Vol. 91 (2008), p.1372.

[5] H.L. Wang, C.A. Wang, X.F. Yao, D.N. Fang: J. Am. Ceram. Soc. Vol. 90(2007), p. (1992).

[6] C.A. Wang H.L. Wang, L. Yu, Y. Huang: Mater. Sci. Forum Vol. 561-565 (2007), p.523.

[7] L.Y. Chen, Y.L. Gu, Z.H. Yang: Scripta Mate. Vol. 50(2004), p.959.

[8] A. K. Khanra, L. C. Pathak, S. K. Mishra: Adv. Appl. Ceram. Vol. 104(2005), p.282.

[9] S. Zhu, W.G. Fahrenholtz, G. E. Hilmas, et al.: Compos. Part A-APPL S Vol. 39 (2008), p.449.

[10] D.L. Ye and J.H. Hu: Handbook of Thermodynamic Data of Inorganics (Metallurgical Industry Publications, China, 2002, 2nd edition).

[11] H. Zhao, Y. He, Z.Z. Jin: J. Am. Ceram. Soc. Vol. 78(1999), p.2534.

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