Effect of Sintering Aids on the Microstructure and Oxidation Behavior of Hot-Pressed Zirconium Silicate Ceramic

Shifeng Huang; Qinggang Li; Zhi Wang; Xin Cheng; Haiming Wen

doi:10.1016/j.ceramint.2016.09.152

Effect of Sintering Aids on the Microstructure and Oxidation Behavior of Hot-Pressed Zirconium Silicate Ceramic

Shifeng Huang
, Qinggang Li
, Zhi Wang
, Xin Cheng
, Haiming Wen

Materials Science and Engineering

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

Abstract

Zirconium silicate (ZrSiO ₄ ) ceramic was sintered via hot pressing at 1350 °C under an applied pressure of 30 MPa for 60 min using Y ₂ O ₃ or nano-ZrO ₂ as sintering aids. The microstructure, phase composition, and mechanical properties of ZrSiO ₄ were characterized by scanning electron microscopy, X-ray diffraction and three-point bending tests, respectively. The ZrSiO ₄ ceramic with added nano-ZrO ₂ exhibited the highest flexural strength, hardness, fracture toughness, and relative density (132 MPa, 8.15 GPa, 3.34 MPam ^1/2 , and 99.3%, respectively). The effects of oxidation temperature and exposure time on the oxidation behavior of the sintered ZrSiO ₄ were investigated. The oxidation test results showed that the nano-ZrO ₂ sintering aid could effectively improve the oxidation resistance of ZrSiO ₄ . The excellent oxidation resistance of ZrSiO ₄ with added nano-ZrO ₂ is attributed to the fact that nano-ZrO ₂ can restrain the decomposition of ZrSiO ₄ and improve the stability of ZrSiO ₄ .

Original language	American English
Journal	Ceramics International
Volume	43
DOIs	https://doi.org/10.1016/j.ceramint.2016.09.152
State	Published - Jan 1 2017

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Materials Science and Engineering

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@article{da32c34b9d2a4be2b385798542bd70e5,

title = "Effect of Sintering Aids on the Microstructure and Oxidation Behavior of Hot-Pressed Zirconium Silicate Ceramic",

abstract = " Zirconium silicate (ZrSiO 4 ) ceramic was sintered via hot pressing at 1350 °C under an applied pressure of 30 MPa for 60 min using Y 2 O 3 or nano-ZrO 2 as sintering aids. The microstructure, phase composition, and mechanical properties of ZrSiO 4 were characterized by scanning electron microscopy, X-ray diffraction and three-point bending tests, respectively. The ZrSiO 4 ceramic with added nano-ZrO 2 exhibited the highest flexural strength, hardness, fracture toughness, and relative density (132 MPa, 8.15 GPa, 3.34 MPam 1/2 , and 99.3\%, respectively). The effects of oxidation temperature and exposure time on the oxidation behavior of the sintered ZrSiO 4 were investigated. The oxidation test results showed that the nano-ZrO 2 sintering aid could effectively improve the oxidation resistance of ZrSiO 4 . The excellent oxidation resistance of ZrSiO 4 with added nano-ZrO 2 is attributed to the fact that nano-ZrO 2 can restrain the decomposition of ZrSiO 4 and improve the stability of ZrSiO 4 .",

author = "Shifeng Huang and Qinggang Li and Zhi Wang and Xin Cheng and Haiming Wen",

year = "2017",

month = jan,

day = "1",

doi = "10.1016/j.ceramint.2016.09.152",

language = "American English",

volume = "43",

journal = "Ceramics International",

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TY - JOUR

T1 - Effect of Sintering Aids on the Microstructure and Oxidation Behavior of Hot-Pressed Zirconium Silicate Ceramic

AU - Huang, Shifeng

AU - Li, Qinggang

AU - Wang, Zhi

AU - Cheng, Xin

AU - Wen, Haiming

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Zirconium silicate (ZrSiO 4 ) ceramic was sintered via hot pressing at 1350 °C under an applied pressure of 30 MPa for 60 min using Y 2 O 3 or nano-ZrO 2 as sintering aids. The microstructure, phase composition, and mechanical properties of ZrSiO 4 were characterized by scanning electron microscopy, X-ray diffraction and three-point bending tests, respectively. The ZrSiO 4 ceramic with added nano-ZrO 2 exhibited the highest flexural strength, hardness, fracture toughness, and relative density (132 MPa, 8.15 GPa, 3.34 MPam 1/2 , and 99.3%, respectively). The effects of oxidation temperature and exposure time on the oxidation behavior of the sintered ZrSiO 4 were investigated. The oxidation test results showed that the nano-ZrO 2 sintering aid could effectively improve the oxidation resistance of ZrSiO 4 . The excellent oxidation resistance of ZrSiO 4 with added nano-ZrO 2 is attributed to the fact that nano-ZrO 2 can restrain the decomposition of ZrSiO 4 and improve the stability of ZrSiO 4 .

AB - Zirconium silicate (ZrSiO 4 ) ceramic was sintered via hot pressing at 1350 °C under an applied pressure of 30 MPa for 60 min using Y 2 O 3 or nano-ZrO 2 as sintering aids. The microstructure, phase composition, and mechanical properties of ZrSiO 4 were characterized by scanning electron microscopy, X-ray diffraction and three-point bending tests, respectively. The ZrSiO 4 ceramic with added nano-ZrO 2 exhibited the highest flexural strength, hardness, fracture toughness, and relative density (132 MPa, 8.15 GPa, 3.34 MPam 1/2 , and 99.3%, respectively). The effects of oxidation temperature and exposure time on the oxidation behavior of the sintered ZrSiO 4 were investigated. The oxidation test results showed that the nano-ZrO 2 sintering aid could effectively improve the oxidation resistance of ZrSiO 4 . The excellent oxidation resistance of ZrSiO 4 with added nano-ZrO 2 is attributed to the fact that nano-ZrO 2 can restrain the decomposition of ZrSiO 4 and improve the stability of ZrSiO 4 .

UR - https://scholarsmine.mst.edu/matsci_eng_facwork/2045

UR - https://doi.org/10.1016/j.ceramint.2016.09.152

U2 - 10.1016/j.ceramint.2016.09.152

DO - 10.1016/j.ceramint.2016.09.152

M3 - Article

VL - 43

JO - Ceramics International

JF - Ceramics International

ER -

Effect of Sintering Aids on the Microstructure and Oxidation Behavior of Hot-Pressed Zirconium Silicate Ceramic

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