Crack-healing behavior of hot-pressed TZ3Y20A-SiC ceramics

Xiu Ping Zhang; Jia Hu Ouyang; Zhan Guo Liu; Yu Jin Wang; Yu Zhou

doi:10.1016/j.ceramint.2013.11.117

Crack-healing behavior of hot-pressed TZ3Y20A-SiC ceramics

Xiu Ping Zhang
, Jia Hu Ouyang^*
, Zhan Guo Liu
, Yu Jin Wang
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

4 Scopus citations

Abstract

Crack healing behavior of hot-pressed TZ3Y20A-SiC ceramics has been investigated by high-temperature oxidation. Semi-elliptical surface cracks with a length of 100 μm have been set on the tensile side of each specimen using a Vickers hardness indenter. Based on flexural strength and observations of crack appearance, the effect of crack healing is finally judged. Cracks on ZrO ₂(Y₂O₃)-Al₂O₃ (TZ3Y20A) ceramics cannot be healed by heat treatment. However, for TZ3Y20A-SiC ceramics, complete crack-healing has been realized by heat treatment at 800 C, 1000 C and 1100 C for 30 h, 10 h and 5 h, respectively. The crack-healing mechanism is attributed to the formation of SiO₂ caused by high temperature oxidation during heat treatment.

Original language	English
Pages (from-to)	6611-6615
Number of pages	5
Journal	Ceramics International
Volume	40
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2013.11.117
State	Published - Jun 2014
Externally published	Yes

Keywords

Crack-healing
D. SiC
High temperature oxidation
TZ3Y20A ceramics

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10.1016/j.ceramint.2013.11.117

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title = "Crack-healing behavior of hot-pressed TZ3Y20A-SiC ceramics",

abstract = "Crack healing behavior of hot-pressed TZ3Y20A-SiC ceramics has been investigated by high-temperature oxidation. Semi-elliptical surface cracks with a length of 100 μm have been set on the tensile side of each specimen using a Vickers hardness indenter. Based on flexural strength and observations of crack appearance, the effect of crack healing is finally judged. Cracks on ZrO 2(Y2O3)-Al2O3 (TZ3Y20A) ceramics cannot be healed by heat treatment. However, for TZ3Y20A-SiC ceramics, complete crack-healing has been realized by heat treatment at 800 C, 1000 C and 1100 C for 30 h, 10 h and 5 h, respectively. The crack-healing mechanism is attributed to the formation of SiO2 caused by high temperature oxidation during heat treatment.",

keywords = "Crack-healing, D. SiC, High temperature oxidation, TZ3Y20A ceramics",

author = "Zhang, \{Xiu Ping\} and Ouyang, \{Jia Hu\} and Liu, \{Zhan Guo\} and Wang, \{Yu Jin\} and Yu Zhou",

year = "2014",

month = jun,

doi = "10.1016/j.ceramint.2013.11.117",

language = "英语",

volume = "40",

pages = "6611--6615",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "5",

}

TY - JOUR

T1 - Crack-healing behavior of hot-pressed TZ3Y20A-SiC ceramics

AU - Zhang, Xiu Ping

AU - Ouyang, Jia Hu

AU - Liu, Zhan Guo

AU - Wang, Yu Jin

AU - Zhou, Yu

PY - 2014/6

Y1 - 2014/6

N2 - Crack healing behavior of hot-pressed TZ3Y20A-SiC ceramics has been investigated by high-temperature oxidation. Semi-elliptical surface cracks with a length of 100 μm have been set on the tensile side of each specimen using a Vickers hardness indenter. Based on flexural strength and observations of crack appearance, the effect of crack healing is finally judged. Cracks on ZrO 2(Y2O3)-Al2O3 (TZ3Y20A) ceramics cannot be healed by heat treatment. However, for TZ3Y20A-SiC ceramics, complete crack-healing has been realized by heat treatment at 800 C, 1000 C and 1100 C for 30 h, 10 h and 5 h, respectively. The crack-healing mechanism is attributed to the formation of SiO2 caused by high temperature oxidation during heat treatment.

AB - Crack healing behavior of hot-pressed TZ3Y20A-SiC ceramics has been investigated by high-temperature oxidation. Semi-elliptical surface cracks with a length of 100 μm have been set on the tensile side of each specimen using a Vickers hardness indenter. Based on flexural strength and observations of crack appearance, the effect of crack healing is finally judged. Cracks on ZrO 2(Y2O3)-Al2O3 (TZ3Y20A) ceramics cannot be healed by heat treatment. However, for TZ3Y20A-SiC ceramics, complete crack-healing has been realized by heat treatment at 800 C, 1000 C and 1100 C for 30 h, 10 h and 5 h, respectively. The crack-healing mechanism is attributed to the formation of SiO2 caused by high temperature oxidation during heat treatment.

KW - Crack-healing

KW - D. SiC

KW - High temperature oxidation

KW - TZ3Y20A ceramics

UR - https://www.scopus.com/pages/publications/84894565979

U2 - 10.1016/j.ceramint.2013.11.117

DO - 10.1016/j.ceramint.2013.11.117

M3 - 文章

AN - SCOPUS:84894565979

SN - 0272-8842

VL - 40

SP - 6611

EP - 6615

JO - Ceramics International

JF - Ceramics International

IS - 5

ER -

Crack-healing behavior of hot-pressed TZ3Y20A-SiC ceramics

Abstract

Keywords

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