三元共晶成分Al2O3/YAG/ZrO2粉体及陶瓷的制备与组织性能

Jiahu Ouyang; Tiangang Yu; Yonghui Ma; Zhigang Wang; Abdelkhalek Henniche; Zhanguo Liu; Yujin Wang; Yu Zhou

三元共晶成分Al₂O₃/YAG/ZrO₂粉体及陶瓷的制备与组织性能

Translated title of the contribution: Preparation, Microstructure and Properties of Ternary Al₂O₃/YAG/ZrO₂ Ceramics Hot Pressed with Eutectic Composition Powders

Jiahu Ouyang^*
, Tiangang Yu
, Yonghui Ma
, Zhigang Wang
, Abdelkhalek Henniche
, Zhanguo Liu
, Yujin Wang
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

Abstract

Al₂O₃/YAG/ZrO₂ powders with eutectic composition have been synthesized by the chemical co-precipitation in alcohol-water aqueous solution and calcination method, and were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The precursors were calcined at temperatures of 600~1350 ^oC in air, and the phase transition process was then revealed with increasing the calcination temperature. Al₂O₃/YAG/ZrO₂ powders calcined at 1300 ^oC for 1 h consist of α-Al₂O₃, YAG and c-ZrO₂ phases. Al₂O₃/YAG/ZrO₂ ceramics with eutectic composition were hot-pressed at 1550 ^oC with the above-mentioned powders. The Al₂O₃/YAG/ZrO₂ ceramic sintered at 1550 ^oC contains an intragranular microstructure, and exhibits a relative density of 98.8%, a room-temperature flexural strength of 420 MPa, a fracture toughness of 3.69 MPa·m^1/2 and a high-temperature (1000 ^oC) flexural strength of 464 MPa. The formation mechanism of an intragranular microstructure in the Al₂O₃/YAG/ZrO₂ ceramic has been proposed.

Translated title of the contribution	Preparation, Microstructure and Properties of Ternary Al₂O₃/YAG/ZrO₂ Ceramics Hot Pressed with Eutectic Composition Powders
Original language	Chinese (Traditional)
Pages (from-to)	288-293
Number of pages	6
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	47
State	Published - 1 Jul 2018

Cite this

@article{5cb23681b1754c52b70aa9ef13781e22,

title = "三元共晶成分Al2O3/YAG/ZrO2粉体及陶瓷的制备与组织性能",

abstract = "Al2O3/YAG/ZrO2 powders with eutectic composition have been synthesized by the chemical co-precipitation in alcohol-water aqueous solution and calcination method, and were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The precursors were calcined at temperatures of 600\textasciitilde{}1350 oC in air, and the phase transition process was then revealed with increasing the calcination temperature. Al2O3/YAG/ZrO2 powders calcined at 1300 oC for 1 h consist of α-Al2O3, YAG and c-ZrO2 phases. Al2O3/YAG/ZrO2 ceramics with eutectic composition were hot-pressed at 1550 oC with the above-mentioned powders. The Al2O3/YAG/ZrO2 ceramic sintered at 1550 oC contains an intragranular microstructure, and exhibits a relative density of 98.8\%, a room-temperature flexural strength of 420 MPa, a fracture toughness of 3.69 MPa·m1/2 and a high-temperature (1000 oC) flexural strength of 464 MPa. The formation mechanism of an intragranular microstructure in the Al2O3/YAG/ZrO2 ceramic has been proposed.",

keywords = "AlO/ZrO/YAG ceramic, Intragranular microstructure, Mechanical properties, Phase transition",

author = "Jiahu Ouyang and Tiangang Yu and Yonghui Ma and Zhigang Wang and Abdelkhalek Henniche and Zhanguo Liu and Yujin Wang and Yu Zhou",

year = "2018",

month = jul,

day = "1",

language = "繁体中文",

volume = "47",

pages = "288--293",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

}

TY - JOUR

T1 - 三元共晶成分Al2O3/YAG/ZrO2粉体及陶瓷的制备与组织性能

AU - Ouyang, Jiahu

AU - Yu, Tiangang

AU - Ma, Yonghui

AU - Wang, Zhigang

AU - Henniche, Abdelkhalek

AU - Liu, Zhanguo

AU - Wang, Yujin

AU - Zhou, Yu

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Al2O3/YAG/ZrO2 powders with eutectic composition have been synthesized by the chemical co-precipitation in alcohol-water aqueous solution and calcination method, and were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The precursors were calcined at temperatures of 600~1350 oC in air, and the phase transition process was then revealed with increasing the calcination temperature. Al2O3/YAG/ZrO2 powders calcined at 1300 oC for 1 h consist of α-Al2O3, YAG and c-ZrO2 phases. Al2O3/YAG/ZrO2 ceramics with eutectic composition were hot-pressed at 1550 oC with the above-mentioned powders. The Al2O3/YAG/ZrO2 ceramic sintered at 1550 oC contains an intragranular microstructure, and exhibits a relative density of 98.8%, a room-temperature flexural strength of 420 MPa, a fracture toughness of 3.69 MPa·m1/2 and a high-temperature (1000 oC) flexural strength of 464 MPa. The formation mechanism of an intragranular microstructure in the Al2O3/YAG/ZrO2 ceramic has been proposed.

AB - Al2O3/YAG/ZrO2 powders with eutectic composition have been synthesized by the chemical co-precipitation in alcohol-water aqueous solution and calcination method, and were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The precursors were calcined at temperatures of 600~1350 oC in air, and the phase transition process was then revealed with increasing the calcination temperature. Al2O3/YAG/ZrO2 powders calcined at 1300 oC for 1 h consist of α-Al2O3, YAG and c-ZrO2 phases. Al2O3/YAG/ZrO2 ceramics with eutectic composition were hot-pressed at 1550 oC with the above-mentioned powders. The Al2O3/YAG/ZrO2 ceramic sintered at 1550 oC contains an intragranular microstructure, and exhibits a relative density of 98.8%, a room-temperature flexural strength of 420 MPa, a fracture toughness of 3.69 MPa·m1/2 and a high-temperature (1000 oC) flexural strength of 464 MPa. The formation mechanism of an intragranular microstructure in the Al2O3/YAG/ZrO2 ceramic has been proposed.

KW - AlO/ZrO/YAG ceramic

KW - Intragranular microstructure

KW - Mechanical properties

KW - Phase transition

UR - https://www.scopus.com/pages/publications/85064035595

M3 - 文章

AN - SCOPUS:85064035595

SN - 1002-185X

VL - 47

SP - 288

EP - 293

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

ER -

三元共晶成分Al₂O₃/YAG/ZrO₂粉体及陶瓷的制备与组织性能

Abstract

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