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Flexural strength properties of MoSi2 based composites
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 Title & Authors
Flexural strength properties of MoSi2 based composites
Lee, Sang-Pill; Lee, Hyun-Uk; Lee, Jin-Kyung; Bae, Dong-Su;
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The flexural strength of based composites reinforced with Nb sheets has been investigated, based on the detailed examination of their microstructure and fractured surface. Both sintered density and porosity of Nb/ composites were also examined. Nb/ composites were fabricated by different conditions such as temperature, applied pressure and its holding time, using a hot-press device. The volume fraction of Nb sheet in this composite system was fixed as 10%. The characterization of Nb/ composites were investigated by means of optical microscopy, scanning electron microscope and three point bending test. Nb/ composites represented a dense morphology at the interfacial region, accompanying the creation of two types of reaction layer by the chemical reaction of Nb and . Nb/ composites possessed an excellent density at the fabricating temperature of , corresponded to about 95% of theoretical density. The flexural strength of Nb/ romposites were greatly affected by the pressure holding time at the same fabricating temperature, owing to the large suppression of porosity in the microstructure. Especially, Nb/ composites represented a good flexural strength of about 310 MPa at the fabricating condition of , 30MPa and 60min, accompanying the pseudo-ductile fracture behavior by the deformation of Nb sheet and the interfacial delamination.
Fabricating condition;Sintered density;Flexural strength;Microstructure;
 Cited by
이상필, 이문희, 이진경 (2008), "$Al_{2}O_{3}$$Y_{2}O_{3}$입자를 함유한 액상소결 SiC 재료의 특성", 한국해양공학회지, 제22권 제4호, pp 59-64.

윤한기, 이상필 (2002), "고온 선박 엔진용 $MoSi_{2}$ 금속간화합물의 경도와 방전가공 특성", 한국해양공학회지, 제16권, 제6호, pp. 60-64.

Bose, S. (1992). "Engineering Aspect of Creep Denformation of Molybdenum Disilicide", Mater, Sci. and Eng., A155, pp 217-225.

Chou, T.C. and Nieh, T.G. (1993). "Pesting of the High-temperature MoSi2 Intermetallic, J. Metal., Vol 45, pp 15-21.

Courtright, E.L. (1999). "A Comparison of $MoSi_{2}$ Materix Composites with Other Silicon-base Composite Systems", Mater. Sci. and Eng. A261, pp 53-63.

Lee, S.P., Sasaki, G. and Fukunaga, H. (1998). "Effect of Fabrcating Conditions on Impact Properties of $Nb/MoSi_{2}$ Laminate Composites", J. Japan. Inst. Met., Vol 63, pp 351-357.

Lee, S.P. and Fukunaga, H. (2000). "Interfacial Reaction Layer of $Nb/MoSi_{2}$ Laminate Composites and Its Effect of Fracture Characteristics", Scrip. Mater., Vol 43, pp 795-799. crossref(new window)

Lee, S.P., Yoshida, M. and Fukunaga, H. (2000). "Interfacial Modification and Impact Properties of $Nb/MoSi_{2}$ Laminate Composites by the Addition of $ZrO_{2}$, $NbMoSi_{2}$, and SiC Particles" Metall. Mater. Trans., Vol. 31, pp 2075-2081. crossref(new window)

Meschter, P.J. and Schwartz, D.S. (1989). "Silicide-matrix Materials for High Temperature Applications", J. Metal., Vol 41, pp 52-55.

Petrovic, J.J. and Vasudenvan, A.K. (1999). "Key Developments in High Temperature Structural Silicides", Mater. Sci. and Eng., A261, pp 1-5.

Shah, D.M., Berezik, D., Anton, D.L. and Hecht, R. (1992). "Appraisal of Other Silicides as Structural Materials", Mater. Sci. and Eng., A155, pp 45-37.

Xiao, L., Kim, Y.S., Abbaschian, R. and Hecht, R.J. (1991). "Processing and Mechanical Properties of Niobium-reinforced $MoSi_{2}$ Composites", Mater. Sci. and Eng., A144, pp 277-285.

Yang, J.M., Jeng, S.M., Yang, C.J. and Anton, D.L. (1990). "Chemical Compatibility of High Temperature Interme-tallic Compounds with Various Potential Reinforcements", Mater. Res. Soc. Sympo., Vol 194, pp 385-392. crossref(new window)