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Effect of In-situ Formed Pr0.833Al11.833O19 on Fracture Toughness of ZTA Ceramics
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Yuhong HONG, Mingmin BAI, Qibing CHANG, Xiuying LI, Kun LIU, Yongqing WANG
Journal of the Chinese Ceramic Society | 2021, 49(4) : 692 - 701
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Journal of the Chinese Ceramic Society | 2021, 49(4): 692-701
Effect of In-situ Formed Pr0.833Al11.833O19 on Fracture Toughness of ZTA Ceramics
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Yuhong HONG, Mingmin BAI, Qibing CHANG, Xiuying LI, Kun LIU, Yongqing WANG
Affiliations
  • School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, Jiangxi, China

    • HONG Yuhong (1992-), female, Doctoral candidate. E-mail:

About Author:

HONG Yuhong (1992-), female, Doctoral candidate. E-mail:

Published: 2021-04-20 doi: 10.14062/j.issn.0454-5648.20200820
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The fracture toughness of zirconia toughened alumina (ZTA, 15% ZrO2 in mass fraction) ceramics was improved via the addition of plate-like Pr0.833Al11.833O19 crystals prepared by in-situ solid-state reaction. The effects of Pr6O11 dopant content and sintering system on the microstructure and mechanical properties of ZTA ceramics were investigated. The results show that the plate-like Pr0.833Al11.833O19 crystals can be in-situ prepared at Pr6O11 doping content of >1.0% (mass fraction) and by heat preservation at 600℃ for 4 h, 800℃ for 1 h and 1 600℃ for 2 h, respectively. The ZTA ceramic with the plate-like crystals at an average aspect ratio of 11.76 uniformly distribute at Al2O3 grain boundary has the fracture toughness of 6.37 MPa·m1/2, which is increased by 88%, compared to the ZTA ceramic without the plate-like crystals.

composite  /  toughening  /  praseodymium hexaluminate plate-like crystal  /  alumina  /  zirconia  /  in-situ
洪毓鸿, 白明敏, 常启兵, 李秀英, 刘昆, 汪永清. 原位生成Pr0.833Al11.833O19板状晶对ZTA陶瓷韧性的影响. 硅酸盐学报, 2021 , 49 (4) : 692 -701 . DOI: 10.14062/j.issn.0454-5648.20200820
Yuhong HONG, Mingmin BAI, Qibing CHANG, Xiuying LI, Kun LIU, Yongqing WANG. Effect of In-situ Formed Pr0.833Al11.833O19 on Fracture Toughness of ZTA Ceramics[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (4) : 692 -701 . DOI: 10.14062/j.issn.0454-5648.20200820
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Year 2021 volume 49 Issue 4
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Article Info
doi: 10.14062/j.issn.0454-5648.20200820
  • Receive Date：2020-10-30
  • Online Date：2026-10-30
  • Published：2021-04-20
Article Data
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History
  • Received：2020-10-30
  • Revised：2020-11-29
Funding
Affiliations
    School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, Jiangxi, China

Corresponding:

WANG Yongqing (1966-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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