Effect of large thicknesses on the characteristics of laminated ZrO-Zr2CN/Si3N4 ceramics by reactive hot pressing

Liangjun Li; Laifei Cheng; Shangwu Fan; Yupeng Xie; Jimei Xue; Litong Zhang

doi:10.1016/j.jallcom.2015.10.012

Effect of large thicknesses on the characteristics of laminated ZrO-Zr₂CN/Si₃N₄ ceramics by reactive hot pressing

Liangjun Li, Laifei Cheng, Shangwu Fan, Yupeng Xie, Jimei Xue, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

16 Scopus citations

Abstract

Tape casting and reactive hot pressing are employed to fabricate laminated ZrO-Zr₂CN/Si₃N₄ ceramics with various large thicknesses of Si₃N₄ layers, and the effects of thicknesses of the Si₃N₄ layers on the characteristics of the laminated ceramics were investigated. With increasing the thicknesses of Si₃N₄ layers, the flexural strength and Young's modulus of the laminated ceramics increased while the fracture toughness decreased, and the contents of ZrO and ZrO₂ at the surfaces of Zr particles after organic removal process which were the key factor of the morphologies of ZrO-Zr₂CN layers and interfaces. With the increase of residual compressive stresses in Si₃N₄ layers, work of fracture and left tail in flexural stress-displacement curves increased. The laminar structure with large thickness obtained well strengthening effect and high damage tolerance.

Original language	English
Pages (from-to)	654-662
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	656
DOIs	https://doi.org/10.1016/j.jallcom.2015.10.012
State	Published - 25 Jan 2016

Keywords

Interfaces
Laminated ceramics
Large thickness
Reactive hot pressing
Residual stress

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10.1016/j.jallcom.2015.10.012

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title = "Effect of large thicknesses on the characteristics of laminated ZrO-Zr2CN/Si3N4 ceramics by reactive hot pressing",

abstract = "Tape casting and reactive hot pressing are employed to fabricate laminated ZrO-Zr2CN/Si3N4 ceramics with various large thicknesses of Si3N4 layers, and the effects of thicknesses of the Si3N4 layers on the characteristics of the laminated ceramics were investigated. With increasing the thicknesses of Si3N4 layers, the flexural strength and Young's modulus of the laminated ceramics increased while the fracture toughness decreased, and the contents of ZrO and ZrO2 at the surfaces of Zr particles after organic removal process which were the key factor of the morphologies of ZrO-Zr2CN layers and interfaces. With the increase of residual compressive stresses in Si3N4 layers, work of fracture and left tail in flexural stress-displacement curves increased. The laminar structure with large thickness obtained well strengthening effect and high damage tolerance.",

keywords = "Interfaces, Laminated ceramics, Large thickness, Reactive hot pressing, Residual stress",

author = "Liangjun Li and Laifei Cheng and Shangwu Fan and Yupeng Xie and Jimei Xue and Litong Zhang",

year = "2016",

month = jan,

day = "25",

doi = "10.1016/j.jallcom.2015.10.012",

language = "英语",

volume = "656",

pages = "654--662",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effect of large thicknesses on the characteristics of laminated ZrO-Zr2CN/Si3N4 ceramics by reactive hot pressing

AU - Li, Liangjun

AU - Cheng, Laifei

AU - Fan, Shangwu

AU - Xie, Yupeng

AU - Xue, Jimei

AU - Zhang, Litong

PY - 2016/1/25

Y1 - 2016/1/25

N2 - Tape casting and reactive hot pressing are employed to fabricate laminated ZrO-Zr2CN/Si3N4 ceramics with various large thicknesses of Si3N4 layers, and the effects of thicknesses of the Si3N4 layers on the characteristics of the laminated ceramics were investigated. With increasing the thicknesses of Si3N4 layers, the flexural strength and Young's modulus of the laminated ceramics increased while the fracture toughness decreased, and the contents of ZrO and ZrO2 at the surfaces of Zr particles after organic removal process which were the key factor of the morphologies of ZrO-Zr2CN layers and interfaces. With the increase of residual compressive stresses in Si3N4 layers, work of fracture and left tail in flexural stress-displacement curves increased. The laminar structure with large thickness obtained well strengthening effect and high damage tolerance.

AB - Tape casting and reactive hot pressing are employed to fabricate laminated ZrO-Zr2CN/Si3N4 ceramics with various large thicknesses of Si3N4 layers, and the effects of thicknesses of the Si3N4 layers on the characteristics of the laminated ceramics were investigated. With increasing the thicknesses of Si3N4 layers, the flexural strength and Young's modulus of the laminated ceramics increased while the fracture toughness decreased, and the contents of ZrO and ZrO2 at the surfaces of Zr particles after organic removal process which were the key factor of the morphologies of ZrO-Zr2CN layers and interfaces. With the increase of residual compressive stresses in Si3N4 layers, work of fracture and left tail in flexural stress-displacement curves increased. The laminar structure with large thickness obtained well strengthening effect and high damage tolerance.

KW - Interfaces

KW - Laminated ceramics

KW - Large thickness

KW - Reactive hot pressing

KW - Residual stress

UR - http://www.scopus.com/inward/record.url?scp=84944088482&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2015.10.012

DO - 10.1016/j.jallcom.2015.10.012

M3 - 文章

AN - SCOPUS:84944088482

SN - 0925-8388

VL - 656

SP - 654

EP - 662

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effect of large thicknesses on the characteristics of laminated ZrO-Zr₂CN/Si₃N₄ ceramics by reactive hot pressing

Abstract

Keywords

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