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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제3호
- 발행연도
- 2021.1
- 수록면
- 296 - 300 (5page)
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초록· 키워드
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To improve the toughness of Al2O3 ceramic, xLa2O3/10Nb2O5-(90?x)Al2O3 (x = 2.5-15.0 vol.%) composite ceramics weresynthesized via microwave-sintering. The influences of sintering temperature (Ts) and La2O3 content on phase composition andmechanical property of xLa2O3/10Nb2O5-(90?x)Al2O3 composite ceramics were studied. It is shown in the results that the Tsof La2O3/Nb2O5 doped Al2O3 ceramic was 150 oC lower than that of Al2O3 ceramic. With the increase of x, La0.33NbO3, LaNbO4and LaAl11O18 were formed successively. LaNbO4, columnar-Al2O3 grains and LaAl11O18 with plate-like shape were generatedin-situ during the sintering period. Compared to Al2O3 ceramic, the fracture toughness of xLa2O3/10Nb2O5-(90?x)Al2O3ceramics were at least 70% higher when 5.0 ≤ x ≤ 12.5. 7.5La2O3/10Nb2O5-82.5Al2O3 ceramic exhibited superior mechanicalproperty: Hv = 12.0 GPa, KIC = 6.2 MPa·m1/2 (1,500 oC, 30 min).
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참고문헌 (30)
참고문헌 신청
Qingbo Tian / 2016 / Effect of characteristics of submicrometer powder on the sintering behaviors of Al2O3 ceramic / Journal of Ceramic Processing Research 17(7):676~680
R. Danzer / 2008 / Adv. Eng. Mater 10(4):275~298
윤진국 / 2016 / Mechanochemical synthesis and rapid sintering of nanocrystalline AlCr2-2Al2O3 composite and its mechanical properties / Journal of Ceramic Processing Research 17(8):876~880
W. Acchar / 2005 / Mater. Sci. Eng. A 406(1-2):74~77
Z. B. Yin / 2013 / Mater. Sci. Eng. A 577:9~15
R. Danzer / 2008 / Adv. Eng. Mater 10(4):275~298
윤진국 / 2016 / Mechanochemical synthesis and rapid sintering of nanocrystalline AlCr2-2Al2O3 composite and its mechanical properties / Journal of Ceramic Processing Research 17(8):876~880
W. Acchar / 2005 / Mater. Sci. Eng. A 406(1-2):74~77
Z. B. Yin / 2013 / Mater. Sci. Eng. A 577:9~15
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