Communications of the American Ceramic Sociery Vol. 85. No. 11 Table Il. Calculation Results of the Surface Area and Total Surface Energy of B-Sic Whisker Model Surface area, Shy Total surface area,a n1=(7V6/30h,S10=(2V3/5)h,S1=(3V2/5he[29/30)V2+(65V6(U2)h 1=(3V2/4h (3/2)V6(Uda) SiC 111 10nm Fig. 5. High-resolution TEM image showing the zigzag side surface of the B-SiC whisker. References J. Petrovic. and S. R “ Growth of Whisker by the VLS Process, T. Christman and S. Suresh,"Microstructural Develop Aluminu 1111l Alloy-SiC Whisker Composite, Acta Metall, 36, 1691(1988 BL. Geng and C. K. Yao, "Development of Some Fundamental Research of SiCW/Al Composites in HIT, "J. Mater. Sci. Technol, 9, 431(1993)- F. Ye, T. C. Lei, and Y. Zhou, "Interface Structure and Mechanical AL,O-20 vol% SiCw Ceramic Matrix Composite, Mater. Sci. Eng. A, A281, 305 Z.Y. Ma, Y. X. Lu, M. Luo, and J Bi, "Effect of Solution Tempera Properties of SiCw/2024Al Composite, "J. Mater. Sci. TechnoL, 11, 29 SiCw/6061Al Composites by Squeeze Casting Method", p. 29 in MRS Intermational nm Meeting on Advanced Materials, Vol. 4(Tokyo, Japan). Materials Research Society R Nutt and J. M. Duva,"Failure Mechanism in Al-SiC Composites,"Scr. Fig 4. High-resolution TEM images of the B-SiC whisker in longitudinal Metall20,1055(1986) section(a) triangular whisker and(b) hexagonal whisker ). eL. Cao, L Gene C K. Yao, and T Q Lei, "Interface in Silicon Carbide Whisker terface Bonding Mechanism in a Squeeze Casting SiCw/Al Composite, " J. Mater. Sci. Left, 14, 606(1995). Ⅳv. Conclusions IoL Geng and C. K. Yao, "SiC-Al Interface Structure in Squeeze Cast Sicw/ Composite, Scr: Metall. Mater, 33, 949(1995) The side surface of the commercial TwS-100 B-SiC whiskers Q. Liu, K. Wu, L. Geng, and C. K. Yao, "Microdiffraction Study of B-Sic display a form of zigzag structure. For the hexagonal whisker, the ter in a SiCw/Al Composite, Mater. Sci. Eng. A, A130, 113(1990) ide surfaces are composed of (111) crystal planes. For the R. Nutt, "Microstructure and Growth Model for Rice-Hull-Derived SiC Whiskers,J.Am. Ceram Soc., 71 3]149(1988) triangular whisker, the side surfaces are composed of (1111 IS R Nutt, "Defects in Silicon Carbide Whiskers, "J. Am. Ceram. Soc., 67(61428 11101, and( 100) crystal plarIV. Conclusions The side surface of the commercial TWS-100
-SiC whiskers display a form of zigzag structure. For the hexagonal whisker, the side surfaces are composed of {111} crystal planes. For the triangular whisker, the side surfaces are composed of {111}, {110}, and {100} crystal planes. References 1 J. V. Milewski, F. D. Gac, J. J. Petrovic, and S. R. Skaggs, “Growth of beta-Silicon Carbide Whiskers by the VLS Process,” J. Mater. Sci., 20, 1160 (1985). 2 T. Christman and S. Suresh, “Microstructural Development in an Aluminum Alloy–SiC Whisker Composite,” Acta Metall., 36, 1691 (1988). 3 L. Geng and C. K. Yao, “Development of Some Fundamental Research of SiCw/Al Composites in HIT,” J. Mater. Sci. Technol., 9, 431 (1993). 4 F. Ye, T. C. Lei, and Y. Zhou, “Interface Structure and Mechanical Properties of Al2O3–20 vol% SiCw Ceramic Matrix Composite,” Mater. Sci. Eng. A, A281, 305 (2000). 5 Z. Y. Ma, Y. X. Lu, M. Luo, and J. Bi, “Effect of Solution Temperature on Tensile Properties of SiCw/2024Al Composite,” J. Mater. Sci. Technol., 11, 291 (1995). 6 L. Geng, W. Zhao, and C. K. Yao, “A Study of Fabrication Technique of SiCw/6061Al Composites by Squeeze Casting Method”; p. 29 in MRS International Meeting on Advanced Materials, Vol. 4 (Tokyo, Japan). Materials Research Society, Pittsburgh, PA, 1988. 7 S. R. Nutt and J. M. Duva, “Failure Mechanism in Al-SiC Composites,” Scr. Metall., 20, 1055 (1986). 8 L. Cao, L. Geng, C. K. Yao, and T. Q. Lei, “Interface in Silicon Carbide Whisker Reinforced Aluminum Composite,” Scr. Metall., 23, 227 (1989). 9 L. Geng and C. K. Yao, “SiC-Al Interface Bonding Mechanism in a Squeeze Casting SiCw/Al Composite,” J. Mater. Sci. Lett., 14, 606 (1995). 10L. Geng and C. K. Yao, “SiC-Al Interface Structure in Squeeze Cast SiCw/Al Composite,” Scr. Metall. Mater., 33, 949 (1995). 11Q. Liu, K. Wu, L. Geng, and C. K. Yao, “Microdiffraction Study of
-SiC Whisker in a SiCw/Al Composite,” Mater. Sci. Eng. A, A130, 113 (1990). 12S. R. Nutt, “Microstructure and Growth Model for Rice-Hull-Derived SiC Whiskers,” J. Am. Ceram. Soc., 71 [3] 149 (1988). 13S. R. Nutt, “Defects in Silicon Carbide Whiskers,” J. Am. Ceram. Soc., 67 [6] 428 (1984). Fig. 4. High-resolution TEM images of the
-SiC whisker in longitudinal section ((a) triangular whisker and (b) hexagonal whisker). Fig. 5. High-resolution TEM image showing the zigzag side surface of the
-SiC whisker. Table II. Calculation Results of the Surface Area and Total Surface Energy of
-SiC Whisker Model Surface area, Shkl Total surface area, t I S112
 lw 36(Ua/a2 )lw II S001  (76/30)lw, S110  (23/15)lw, S111
 (32/5)lw [(29/30)2 (6/5)]6(Ua/a2 )lw III S111
 (32/4)lw (3/2)6(Ua/a2 )lw 2866 Communications of the American Ceramic Society Vol. 85, No. 11