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J. Korean Ceram. Soc. > Volume 34(9); 1997 > Article
Journal of the Korean Ceramic Society 1997;34(9): 921.
$NbC_x-C_{1-x}/Y_2O_3$ 박막코팅을 이용한 $Al_2O_3/Ti$ 계면특성향상 -(2) 계면특성평가
위스콘신 대학교 재료공학과 연구원(현재 삼성전관 근무)
Enhanced $Al_2O_3/Ti$ Interfacial Properties Using $NbC_x-C_{1-x}/Y_2O_3$ Interlayers-(2) Determination of the Interfacial Properties
Two NbCx-C1-x/Y2O3/Ti sputter-coated Al2O3 substrates (L 5.5 cm$times$W 0.5 cm) were diffusion bonded together using hot press method at 95$0^{circ}C$ for 3 hours under 1 MPa of applied pressure. 4 points bending tests were used to evaluate the mechanical performance of these precracked laminate beams. Two types of mechanical responses were observed: crack penetration through the interface for x=0.75, 1 and crack deflection into an interface for x=0.25, 0.5. The Al2O3/NbCx-C1-x/Y2O3/Ti system suggested here has been proves to be effective for the thermokinetical stability and tailorability of the interfaces of Al2O3/Ti composites at 95$0^{circ}C$.
Key words: $Al_2O_3/Ti$ composites, 4 point bending test, Interfacial strength, Thermokinetical stability, Tailorability of the interface
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