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논문 상세정보

Y-TZP/Ce-TZP 구조세라믹스의 제조 및 특성연구

Fabrication and Characteristics of Y-TZP/Ce-TZP Structural Ceramics

Abstract

Y-TZP/Ce-TZP ceramics having relative sintered densities of>95% average grain sizes of 0.36$\mu\textrm{m}$ microhar-dness of 1150 kg/mm2 fracture strength of 390-830 MPa and toughness of 6.4-10.2 MPa$.$mm1/2 were prepared by conventional sintering of 3 mol% Y2O3-ZrO2 and 12 mol% CeO2-ZrO2 powders at 1400 and 1500$^{\circ}C$ The average grain sizes of Y-TZP/Ce-TZP ceramics were mainly governed by those of Ce-TZP. White increasing Ce-TZP content toughness increased while microhardness and fracture strength decreased. With comparing microhardness and toughness fracture strength was more sensitive on not only grain size but also other factors such as microstructural and compositional variations. The densification of Y-TZP/Ce-TZP cermaics was not greatly affected by composition and soaking time at temperature over 1400$^{\circ}C$ With increasing CE-TZP content the stability of t-ZrO2 decreased under thermal aging in air whereas increased in hydrothermal atmosphere and aqueous solution.

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이 논문을 인용한 문헌 (3)

  1. 1999. "Microstructure and Mechanical Properties of $Al_2$O$_3$/t-ZrO$_2$ Particulate Composites" 요업학회지 = Journal of the Korean Ceramic Society, 36(7): 734~741 
  2. Yang, Tae-Yeong ; Lee, Yun-Bok ; Kim, Yeong-U ; O, Gi-Dong ; Park, Hong-Chae 2000. "Preparation and Characteristics of $Al_2O_3/TZP$ Composites Using Liquid Infiltration Technique" 한국재료학회지 = Korean journal of materials research, 10(5): 321~327 
  3. Kim, Min-Ju ; Lee, Yun-Bok ; Kim, Yeong-U ; Jeon, Byeong-Se ; Park, Hong-Chae 2000. "Fabrication of Y-TZP/Ce-TZP Multilayer Composites Using Slip Casting(II)" 한국재료학회지 = Korean journal of materials research, 10(10): 677~683 

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