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논문 상세정보

전기용융 분말로부터 합성된 $Al_2$TiO$_5$ Ceramics의 열충격 저항성

Thermal Shock Resistance of $Al_2$TiO$_5$ Ceramics Prepared from Electrofused Powders

Abstract

The thermal instability of Al2TiO5 Ceramics was contrlled by solid solution with MgO SiO2 and ZrO2 through electrofusion in an arc furnace. The thermal expansion properties of Al2TiO5 composites show the hysteresis due to the strong anisotropy of The crystal axes of these material. These phenomena are ex-plained by the opening and closing of microcracks. The difference in microcracking temperatures e.g 587.6(ATG2), 405.9(ATG3) and 519.7$^{\circ}C$(ATG4) is caused by the difference in grain size and stabilizer type. The thermal shock behaviour under cyclic conditions between 750-1400-75$0^{\circ}C$ show no change in mi-crostructure and phase assemblage for all three stabilized specimens. After the thermal loading test at 110$0^{\circ}C$ for 100hrs. ATG1 and ATG2 materials decomposes completely to its components corundum and ru-tile in both cases. However with approximatelly 20% retention of the Al2TiO5 Thus in order to prevent decomposition of the stabilized material in the critical temperature range 800-130$0^{\circ}C$ it must be traversed within a short period of time.

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이 논문을 인용한 문헌 (5)

  1. 2003. "" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 40(2): 109~112 
  2. 2003. "" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 40(3): 317~321 
  3. Park, Jae-Hyun ; Lee, Won-Jae ; Kim, Il-Soo 2010. "Al2TiO5-machinable Ceramics Made by Reactive Sintering of Al2O3 and TiO2" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 47(6): 498~502 
  4. Kim, Sang-Hun ; Kang, Eun-Tae ; Kim, Ung-Soo ; Hwang, Kwang-Taek ; Cho, Woo-Seok 2012. "Characteristics of the sintered body of the Al2TiO5 with addition of LAS (β-spodumene) and Fe2O3" 한국결정성장학회지 = Journal of the Korean crystal growth and crystal technology, 22(1): 57~63 
  5. Kim, Il Soo ; Park, Jeong Hyun ; Lee, Won Jae ; Lee, Kang Ho 2013. "Machinable SiC Ceramics with Addition of Al2TiO5" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 50(6): 372~377 

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