Grains refinement mechanism of (Ti,Ta)3SiC2/Al2O3 composite ceramics

被引：5

作者：

Ji, Jun ^{[1
]}

Zhang, Zhenyu ^{[1
]}

Zhang, Liu ^{[2
]}

Ma, Deli ^{[1
]}

Pan, Baocai ^{[1
]}

Li, Qinggang ^{[1
]}

Sun, Mengyong ^{[3
]}

Li, Dechun ^{[4
]}

Shi, Guopu ^{[1
]}

Wang, Zhi ^{[1
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China

[2] Yancheng Inst Technol, Sch Mat Sci & Engineerin, Yancheng 224051, Peoples R China

[3] China North Ind Grp, Inst 52, Yantai 264003, Peoples R China

[4] Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2022年 / 48卷 / 18期

基金：

中国国家自然科学基金;

关键词：

(Ti; Ta)(3)SiC2/Al2O3 composite ceramics; Grains refinement; Wulff theorem; First-principle calculations; Surface energy; TI3SIC2; MICROSTRUCTURE; 1ST-PRINCIPLES; SI; TI(3)AC(2); EVOLUTION; AL;

D O I：

10.1016/j.ceramint.2022.05.363

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：

(Ti,Ta)(3)SiC2/Al2O3 composite ceramics were prepared by hot-pressing sintering using TaC as Ta source. X-ray diffraction analysis showed that the maximum of solid solubility of Ta in Ti3SiC2 were determined to be from 7.5 to 10 at%. With the increase of TaC contents, the grain size of Ti3SiC2 reduced obviously. Combined Wulff theorem and first-principle calculations, the probable mechanism of this refinement phenomenon was revealed. When Ta atoms substitute Ti in surface atomic layers, the surface energy of (001) plane increased significantly compared to those of (100) plane, which restricted the growth of (001) facets. As it is the largest exposed surface, the lower growth rate of (001) facets lead to the grains refinement. The results will provide theoretical guidance for surface modification and morphological transformation of Ti3SiC2-based ceramics.

引用

页码：26689 / 26695

页数：7

共 37 条

[1] Effects of surface stability on the morphological transformation of metals and metal oxides as investigated by first-principles calculations [J].

Andres, Juan ;

Gracia, Lourdes ;

Gouveia, Amanda Fernandes ;

Ferrer, Mateus Meneghetti ;

Longo, Elson .

NANOTECHNOLOGY, 2015, 26 (40)

[2] Microstructures and mechanical properties of Ti3SiC2/TiC-Al2O3 composites synthesized by reactive hot pressing [J].

Cai, Yanzhi ;

Yin, Hongfeng ;

Pan, Liqing ;

Chen, Panjun ;

Sun, Gaolei .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 571 :137-143

[3] Fabrication of nanocrystalline Sc2O3-Y2O3 solid solution ceramics by spark plasma sintering [J].

Du, Panpan ;

Huo, Di ;

Xi, Haiqin ;

Kang, Yan ;

Sun, Xudong ;

Xiao, Dayu .

CERAMICS INTERNATIONAL, 2017, 43 (13) :9854-9859

[4] Synthesis and mechanical properties of Ti3GeC2 and Ti3(SixGe1-x)C2 (x=0.5, 0.75) solid solutions [J].

Ganguly, A ;

Zhen, T ;

Barsoum, MW .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 376 (1-2) :287-295

[5] Microstructure and wear behavior of spark plasma sintered Ti3SiC2 and Ti3SiC2-TiC composites [J].

Ghosh, Nidul C. ;

Harimkar, Sandip P. .

CERAMICS INTERNATIONAL, 2013, 39 (04) :4597-4607

[6] Interfacial reactions and mechanical properties of SiC fiber reinforced Ti3SiC2 and Ti3(SiAl)C2 composites [J].

He, Guangqi ;

Xu, Jingjun ;

Zhang, Zerong ;

Qian, Yuhai ;

Zuo, Jun ;

Li, Meishuan ;

Liu, Changsheng .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 827

[7] Machinability of Ti3SiC2 with layered structure synthesized by hot pressing mixture of TiCx and Si powder [J].

Hwang, SungSic ;

Lee, Sang Chul ;

Han, JaeHo ;

Lee, Dongyun ;

Park, Sang-Whan .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2012, 32 (12) :3493-3500

[8] The relationship between hardness and abrasive wear resistance of electrodeposited nanocrystalline Ni-P coatings [J].

Jeong, DH ;

Erb, U ;

Aust, KT ;

Palumbo, G .

SCRIPTA MATERIALIA, 2003, 48 (08) :1067-1072

[9] Synthesis and strengthening mechanism for (Ti,Nb)3SiC2/Al2O3 ceramics: A combined experimental and first-principles investigation [J].

Ji, Jun ;

Yang, Hailing ;

Zhang, Zhenyu ;

Chen, Yingying ;

Chen, Sique ;

Li, Qinggang ;

Sun, Mengyong ;

Li, Dechun ;

Shi, Guopu ;

Wang, Zhi .

CERAMICS INTERNATIONAL, 2022, 48 (15) :21258-21267

[10] Interface properties of Ti3SiC2/Al2O3 ceramics: Combined experiments and first-principles calculations [J].

Ji, Jun ;

Zhang, Liu ;

Yu, Jinman ;

Lee, William E. ;

Middleburgh, Simon C. ;

Li, Dechun ;

Wang, Xuye ;

Li, Qinggang ;

Wang, Zhi ;

Shi, Guopu ;

Chen, Fei .

CERAMICS INTERNATIONAL, 2021, 47 (05) :6409-6417

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