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Effect of PrAlO3 on Mechanical Properties of Zirconia Toughened Alumina Bioceramics After Hydrothermal Aging
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Weixin LI1, Mingmin BAI2, Mingyu BAI3
Journal of the Chinese Ceramic Society | 2023, 51(3) : 721 - 729
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Journal of the Chinese Ceramic Society | 2023, 51(3): 721-729
• Research Articles •
Effect of PrAlO3 on Mechanical Properties of Zirconia Toughened Alumina Bioceramics After Hydrothermal Aging
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Weixin LI1, Mingmin BAI2, Mingyu BAI3
Affiliations
  • 1.Jingdezhen University, Jingdezhen 333400, Jiangxi, China
  • 2.School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China
  • 3.Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030000, China

    • LI Weixin (1980-), male, Ph.D., Associate Professor. E-mail:

About Author:

LI Weixin (1980-), male, Ph.D., Associate Professor. E-mail:

Published: 2023-03-20 doi: 10.14062/j.issn.0454-5648.20220840
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The temperature difference between the growth temperature of plate crystal and the sintering temperature of zirconia toughened alumina (ZTA) is the key to the toughening effect of Pr0.833Al11.833O19 plate crystal on ZTA. In this paper, PrAlO3 precursor was prepared by combustion method, and high active PrAlO3 was formed by pre sintering at 900 ℃. It made the difference between the growth temperature of plate crystal and the sintering temperature of ZTA reach 100 ℃, then the plate crystal with high aspect ratio was obtained, which played a synergistic role in toughening. At the same time, the hydrothermal aging process of ZrO2 is slowed down by the solid dissolution of Pr ions into ZrO2, the microcracks induced by phase transformation are reduced, and the fracture strength and Vickers hardness of ZTA are improved. The results show that, compared with ZTA, the fracture toughness of ZTA reinforced and toughened by Pr0.833Al11.833O19 plate crystal in simulated human environment (hydrothermal aging) increases from 7.13 MPa·m1/2 to 8.97 MPa·m1/2, the fracture strength increases from 654.78 MPa to 687.59 MPa, and the Vickers hardness increases from 18.95 GPa to 19.39 GPa.

zirconia toughened alumina bioceramics  /  praseodymium aluminate  /  praseodymium hexaaluminate plate crystal  /  resistance to hydrothermal aging
李伟信, 白明敏, 白明宇. PrAlO3对氧化锆增韧氧化铝生物陶瓷水热老化后力学性能的影响. 硅酸盐学报, 2023 , 51 (3) : 721 -729 . DOI: 10.14062/j.issn.0454-5648.20220840
Weixin LI, Mingmin BAI, Mingyu BAI. Effect of PrAlO3 on Mechanical Properties of Zirconia Toughened Alumina Bioceramics After Hydrothermal Aging[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (3) : 721 -729 . DOI: 10.14062/j.issn.0454-5648.20220840
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Year 2023 volume 51 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20220840
  • Receive Date：2022-10-07
  • Online Date：2026-10-20
  • Published：2023-03-20
Article Data
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History
  • Received：2022-10-07
  • Revised：2022-11-04
Funding
Affiliations
    1.Jingdezhen University, Jingdezhen 333400, Jiangxi, China
    2.School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China
    3.Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030000, China
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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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