Effects of ZrC content on the microstructure and mechanical property of ZrC/ZTA composites consolidated by hot pressing
Effects of ZrC content on the microstructure and mechanical property of ZrC/ZTA composites consolidated by hot pressing
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ZrC含量对热压固结ZrC/ZTA复合材料显微组织和力学性能的影响
DOI：
10.1016/j.jallcom.2020.158402
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发表时间：
2021-04
影响因子：
6.2
通讯作者：
Xie Erqing
中科院分区：
文献类型：
--
作者：
Li Shufen;Zhu Yabin;Chai Jianlong;Liu Yiwen;Niu Lijuan;Gao Xing;Jin Peng;Shen Tielong;Cui Minghuan;Wang Zhiguang;Xie Erqing
In the present work, effects of ZrC addition (10, 15, 20, 25 vol%) on microstructure and mechanical properties of ZTA 20 mol% (Zirconia-20 mol% Toughened Alumina) ceramic composites were investigated. Samples were prepared by Hot Pressing Sintering (HP) at 1600 ℃ and 30 MPa for a soaking time of 2 h. Microstructures were characterized by XRD, Raman, SEM and TEM. XRD and Raman spectra results revealed that only ZrC, α-Al2O3and ZrO2were detected for all composites, indicating that these ceramic composites had excellent chemical compatibilities. SEM images showed refined microstructure was obtained, and the fracture surfaces exhibited a mixed process of transgranular and intergranular fracture. According to the TEM observations, some nano-sized ZrC particles dispersed inside Al2O3grains and formed an intra/inter-type nanostructure. The relative densities and Vickers hardness were inversely proportional to ZrC content, which gradually decreased from 98.24% to 94.89%, from 1 847-1691 HV1, respectively. Flexural strength and fracture toughness were tested by three-point bending method and single-edge notched beam method, respectively. The fracture toughness increased at first and then decreased with ZrC content increased from 0 to 25 vol%. The maximum value was 11.23 MPa m1/2with 20 vol% ZrC addition, with an enhancement of 51% compared to the undoped ZTA mixture. The flexural strength, with a maximum of 1121 MPa without ZrC addition and decreased to 645 MPa with ZrC-10(vol%) addition, then increased monotonously to 1084 MPa as the ZrC content increased from 10 to 25 vol%.
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DOI：
10.1088/1757-899x/116/1/012002
发表时间：
2016-02
期刊：
IOP Conference Series: Materials Science and Engineering
影响因子：
--
作者：
M. Grigoriev;N. Kotelnikov;S. Buyakova;S. Kulkov
通讯作者：
M. Grigoriev;N. Kotelnikov;S. Buyakova;S. Kulkov
DOI：
10.1007/978-3-662-04350-9_4
发表时间：
2001
期刊：
--
影响因子：
--
作者：
M. Bengisu
通讯作者：
M. Bengisu
影响因子：
4.6
作者：
Bartolomé JF;Smirnov A;Kurland HD;Grabow J;Müller FA
通讯作者：
Müller FA
影响因子：
5.5
作者：
Choi, SM;Awaji, H
通讯作者：
Awaji, H
DOI：
10.1016/j.jeurceramsoc.2004.09.025
发表时间：
2005-10-01
影响因子：
5.7
作者：
Magnani, G;Brillante, A
通讯作者：
Brillante, A