Microstructure and Properties of MoSi₂-RSiC Composites Prepared by PIP and MoSi₂-Si-Al Alloy Melting Infiltration Composite Process

Abstract:

The combination of phenolic resin (PF) impregnation-pyrolysis (PIP) and MoSi₂-Si-Al alloy activated melting infiltration (AAMI) combination process were used to prepare MoSi₂-RSiC composites, in which the RSiC works as a matrix. Influence of infiltrated temperatures on the composition, microstructure, mechanical and electrical properties of the composites were studied by XRD, SEM, mechanical test et. al.. The results showed that an almost fully dense MoSi₂-RSiC composite with 3-D interpenetrated network structure was obtained, the compositions of it were mainly SiC, MoSi₂ , Mo (Si,Al)₂, and small amount of residual Si. With the increase of infiltrated temperatures, the flexural strength of the composites increased first and then decreased, it reached 171.40MPa when infiltrated at 1800°C, which was 107.63% higher than that of RSiC matrix. The fracture properties of the composites exhibited a typical brittle rupture. The composites possessed a volume resistivity of 2.90×10^-3 Ω·cm when infiltrated temperature equaled to 1900°C, which was nearly four order of magnitude lower than that of RSiC.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 494-498
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.494
• Online since: March 2014
• Authors: Peng Zhao Gao*, Xiao Liang Zhang, Jing Xiong Liu, Shi Ting Huang, Wen Xie, Han Ning Xiao
• Keywords: 3-D Interpenetrated Network Structure, Electrical Properties, Mechanical Property, MoSi₂-RSiC

References

[1] K. Bundschuh, M. Schüze, C. Müller, et al., J. Eur. Ceram. Soc. 18 (1998) 2389-2391.

[2] N. Orlovskaja, H. Peterlik, W. Steinkellner, K. Kromp., J. Mater. Sci. 35 ( 2000) 699-705.

DOI: 10.1023/a:1004705300886

[3] Z.Z. Yi, Z.P. Xie, Y. Huang, J.T. Ma, Y.B. Cheng, Ceram Int. 28 ( 2002)369-76.

[4] C. Agraiotis, I. Mavroidis, A. Konstandopoulos, et al. Sol Energy Mater. Sol. Cells. 91 (2007) 474–88.

[5] W.M. Guo, H.N. Xiao, H.B. Lei, et al., J. Ceram. Process Res. 12 ( 2011) 682-687.

[6] A. Sonntag., Am. Cera. Soc. Bull. 76 (11) ( 1997)51-4.

[7] H.B. Lei, H.N. Xiao, W.M. Guo, W. Xie, J. Chin. Ceram. Soc. 38 ( 2010)1519-1522.

[8] J. Winzer, L. Weiler, J. Pouquet, Wear. 271 (2011) 2845-2851.

DOI: 10.1016/j.wear.2011.05.042

[9] T. Li, H.J. Li, X.H. Shi, Appl. Surf. Sci. 264 ( 2013) 88-93.

[10] S. Majumdar, Surf. Coat. Technol. 206 (2012) 3393-3398.

[11] K. Shobu, E. Tani, M. Akiyama, T. Watanabe, J. Am. Ceram. Soc. 79 (1996) 544-546.

[12] M. Esfehanian, J. Günster, F. Moztarzadeh, J. Heinrich, J. Eur. Ceram. Soc. 27 (2007) 1229-1235.

[13] P.Z. Gao, L. Wang, S.T. Huang, et al., Ceram. Int. 38 (2012) 5799-5805.

[14] A.K. Bhattacharya, J.G. Heinrich, J. Am. Cera. Soc. 89 (2006) 367-369.

[15] S.T. Huang, Preparation of MoSi2-RSiC composites by PIP-AAMI process and its properties study. Hunan University, (2013).

[16] X.L. Zhang, Z.H. Jin, Z.G. Zhang, Z.X. Wang, Acta. Mater. Compos. Sinica, 27 ( 2012) 104-108.

[17] A Arvanitis, S Diplas, P Tsakiropoulos, et al., Acta Mater, 49 ( 2001) 1063-1078.

[18] D.Q. Yi, H.Q. Liu, B. Wang. Metal Silicides. Metallurgical Industry, Beijing, (2012).