Strengthening mechanism of twin lamellas in transparent AlON ceramics

被引：31

作者：

Guo, Huilu ^{[1
,2
]}

Zhang, Jian ^{[1
]}

Mao, Xiaojian ^{[1
]}

Zhang, Fang ^{[3
]}

Sun, Feng ^{[4
]}

Chen, Feng ^{[1
]}

Wang, Jun ^{[1
]}

Tian, Run ^{[1
]}

Liu, Juan ^{[1
]}

Wang, Shiwei ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Natl Engn Res Ctr Nanotechnol, 28 East Jiang Chuan Rd, Shanghai, Peoples R China

[4] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn D, Shanghai 200240, Peoples R China

[5] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 09期

基金：

国家重点研发计划;

关键词：

AlON; Twin boundary; Transparent ceramics; Dislocations; Strengthening; COPPER; FILMS;

D O I：

10.1016/j.jeurceramsoc.2018.03.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Twin lamellas, were observed in transparent AlON ceramics in our previous work. In this work, the influence of the twin lamellas on mechanical strength was evaluated and its mechanism was investigated by SEM, EBSD, and HRTEM. Both the crystallographic direction and the space direction of a crack will deflect when it propagates across a twin lamella. The dynamic mechanism is that the dislocation propagation in front of the crack tips is blocked by the twin boundaries. Because the fraction of twin boundaries increases with grain size in transparent AlON ceramics, the strengthening effect becomes more notable for large-sized samples resulting in inverse Hall-Petch relation. It is a potentially useful way to advance the mechanical properties of transparent AION ceramics by controlling the content of twin lamellas.

引用

页码：3235 / 3239

页数：5

共 27 条

[1] Hot isostatic pressing of transparent AlON ceramics with Y2O3/La2O3 additives
Chen, Feng
Zhang, Fang
Wang, Jun
Zhang, Hailong
Tian, Run
Zhang, Zhao
Wang, Shiwei
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 650 : 753 - 757
[2] Microstructure evolution in HIPed AlON and its effect on optical property
Chen, Feng
Zhang, Fang
Wang, Jun
Zhang, Jian
Zhang, Hailong
Tian, Run
Zhang, Zhao
Wang, Shiwei
[J]. OPTICAL MATERIALS EXPRESS, 2015, 5 (08): : 1682 - 1688
[3] Preparation of γ-AlON Transparent Ceramics by Pressureless Sintering
Chen, Feng
Zhang, Fang
Wang, Jun
Tian, Run
Zhang, Jian
Sun, Yi
Zhang, Hailong
Zhang, Zhao
Wang, Shiwei
[J]. HIGH-PERFORMANCE CERAMICS VIII, 2014, 602-603 : 226 - 229
[4] Microstructure and optical properties of transparent aluminum oxynitride ceramics by hot isostatic pressing
Chen, Feng
Zhang, Fang
Wang, Jun
Zhang, Hailong
Tian, Run
Zhang, Jian
Zhang, Zhao
Sun, Feng
Wang, Shiwei
[J]. SCRIPTA MATERIALIA, 2014, 81 : 20 - 23
[5] Cleavage cracking across twin boundaries in free-standing silicon thin films
Chen, Jin
Lu, Weiyi
Qiao, Yu
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2008, 91 (04): : 663 - 666
[6] Corbin N. D., 1989, Journal of the European Ceramic Society, V5, P143, DOI 10.1016/0955-2219(89)90030-7
[7] THE DEFORMATION AND AGEING OF MILD STEEL .3. DISCUSSION OF RESULTS
HALL, EO
[J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1951, 64 (381): : 747 - 753
[8] Durable 3-5 μm transmitting infrared window materials
Harris, DC
[J]. INFRARED PHYSICS & TECHNOLOGY, 1998, 39 (04) : 185 - 201
[9] Hartnett T. M., 1977, US Patent, Patent No. 4481300
[10] Optical properties of ALON (aluminum oxynitride)
Hartnett, TM
Bernstein, SD
Maguire, EA
Tustison, RW
[J]. INFRARED PHYSICS & TECHNOLOGY, 1998, 39 (04) : 203 - 211

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