Microstructure evolution of YSZ/Al2O3 supersaturated solid solution

Yongdong Yu; Yongting Zheng; Xudong Liu; Yuchen Yuan; Wanjun Yu; Xiaodong He

doi:10.1016/j.apsusc.2021.149260

Microstructure evolution of YSZ/Al₂O₃ supersaturated solid solution

Yongdong Yu
, Yongting Zheng^*
, Xudong Liu
, Yuchen Yuan
, Wanjun Yu
, Xiaodong He

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The YSZ/Al₂O₃ supersaturated solid solution micro-powders (YAP) were successfully obtained by combustion synthesis assisted rapid water cooling. They were composed of metastable t-Zr_xAl_yY_mO_z phase and metastable γ-Al₂O₃ phase with nano-scale microstructures. There was almost no change in the composition of YAP at the temperature ≤1200 K. The α-Al₂O₃ phase appeared in YAP after heat-treatment at 1300 K, and the average grain size of the solid solution was about 10 nm and 50 nm in YAP-1300 and YAP-1500, respectively. Because the submicro-grains on the surface of YAP-1700 by in-situ nanoprecipitation, the interfaces between YAP disappeared, making intracrystalline-intercrystalline nanocomposite ceramics yet achieved from YAP. Therefore, this method has a guiding role in the preparation of ceramics with high-density nanoprecipitation from YAP.

Original language	English
Article number	149260
Journal	Applied Surface Science
Volume	549
DOIs	https://doi.org/10.1016/j.apsusc.2021.149260
State	Published - 30 May 2021

Keywords

Nanoceramics
Nanoprecipitation
Supersaturated solid solution
YSZ/AlO

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10.1016/j.apsusc.2021.149260

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@article{8feada99ac8844abb95b4704ffbe9e30,

title = "Microstructure evolution of YSZ/Al2O3 supersaturated solid solution",

abstract = "The YSZ/Al2O3 supersaturated solid solution micro-powders (YAP) were successfully obtained by combustion synthesis assisted rapid water cooling. They were composed of metastable t-ZrxAlyYmOz phase and metastable γ-Al2O3 phase with nano-scale microstructures. There was almost no change in the composition of YAP at the temperature ≤1200 K. The α-Al2O3 phase appeared in YAP after heat-treatment at 1300 K, and the average grain size of the solid solution was about 10 nm and 50 nm in YAP-1300 and YAP-1500, respectively. Because the submicro-grains on the surface of YAP-1700 by in-situ nanoprecipitation, the interfaces between YAP disappeared, making intracrystalline-intercrystalline nanocomposite ceramics yet achieved from YAP. Therefore, this method has a guiding role in the preparation of ceramics with high-density nanoprecipitation from YAP.",

keywords = "Nanoceramics, Nanoprecipitation, Supersaturated solid solution, YSZ/AlO",

author = "Yongdong Yu and Yongting Zheng and Xudong Liu and Yuchen Yuan and Wanjun Yu and Xiaodong He",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = may,

day = "30",

doi = "10.1016/j.apsusc.2021.149260",

language = "英语",

volume = "549",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Microstructure evolution of YSZ/Al2O3 supersaturated solid solution

AU - Yu, Yongdong

AU - Zheng, Yongting

AU - Liu, Xudong

AU - Yuan, Yuchen

AU - Yu, Wanjun

AU - He, Xiaodong

PY - 2021/5/30

Y1 - 2021/5/30

N2 - The YSZ/Al2O3 supersaturated solid solution micro-powders (YAP) were successfully obtained by combustion synthesis assisted rapid water cooling. They were composed of metastable t-ZrxAlyYmOz phase and metastable γ-Al2O3 phase with nano-scale microstructures. There was almost no change in the composition of YAP at the temperature ≤1200 K. The α-Al2O3 phase appeared in YAP after heat-treatment at 1300 K, and the average grain size of the solid solution was about 10 nm and 50 nm in YAP-1300 and YAP-1500, respectively. Because the submicro-grains on the surface of YAP-1700 by in-situ nanoprecipitation, the interfaces between YAP disappeared, making intracrystalline-intercrystalline nanocomposite ceramics yet achieved from YAP. Therefore, this method has a guiding role in the preparation of ceramics with high-density nanoprecipitation from YAP.

AB - The YSZ/Al2O3 supersaturated solid solution micro-powders (YAP) were successfully obtained by combustion synthesis assisted rapid water cooling. They were composed of metastable t-ZrxAlyYmOz phase and metastable γ-Al2O3 phase with nano-scale microstructures. There was almost no change in the composition of YAP at the temperature ≤1200 K. The α-Al2O3 phase appeared in YAP after heat-treatment at 1300 K, and the average grain size of the solid solution was about 10 nm and 50 nm in YAP-1300 and YAP-1500, respectively. Because the submicro-grains on the surface of YAP-1700 by in-situ nanoprecipitation, the interfaces between YAP disappeared, making intracrystalline-intercrystalline nanocomposite ceramics yet achieved from YAP. Therefore, this method has a guiding role in the preparation of ceramics with high-density nanoprecipitation from YAP.

KW - Nanoceramics

KW - Nanoprecipitation

KW - Supersaturated solid solution

KW - YSZ/AlO

UR - https://www.scopus.com/pages/publications/85101249859

U2 - 10.1016/j.apsusc.2021.149260

DO - 10.1016/j.apsusc.2021.149260

M3 - 文章

AN - SCOPUS:85101249859

SN - 0169-4332

VL - 549

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 149260

ER -

Microstructure evolution of YSZ/Al₂O₃ supersaturated solid solution

Abstract

Keywords

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