Microstructural evolution, mechanical and thermal properties of LaB6 embedded in Si-B-C-N prepared by spark plasma sintering

被引：10

作者：

Liang, Bin ^{[2
]}

Yang, Zhihua ^{[1
,2
]}

Miao, Yang ^{[2
]}

Li, Quan ^{[2
]}

Zhu, Qishuai ^{[2
]}

Liao, Xingqi ^{[2
]}

Jia, Dechang ^{[1
,2
]}

Zhou, Yu ^{[2
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Inst Adv Ceram, Sch Mat Sci & Engn, Harbin 150080, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Sintering; Microstructure; Mechanical properties; Thermal expansion; DENSIFICATION BEHAVIOR; SIBCN; PARAMETERS; MONOLITHS; CERAMICS;

D O I：

10.1016/j.ceramint.2016.12.016

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：

Si-B-C-N monoliths with 5 wt% LaB6 additives were prepared by spark plasma sintering at 1250-2000 degrees C and 50 MPa using a mechanically alloyed mixture of graphite, c-Si, h-BN and LaB6 powders as the starting materials. Microstructural evolution, mechanical and thermal properties of the as-prepared La/Si-B-C-N monoliths were investigated. The densification of the ceramics starts at 1160 degrees and ends at 1800 degrees C with the formation of La-containing compounds coupled with SiC and BN(C) phases. La-containing BN(C) grains develop into a lamellar structure at 1900 degrees C offering improved fracture toughness and decreased Vickers hardness, flexural strength and elastic modulus. The formation of lamellar BN(C) is also responsible for a high thermal expansion coefficient of 4.2x10(-6) /degrees C.

引用

页码：4814 / 4820

页数：7

共 26 条

[1] Significance of hot pressing parameters on the microstructure and densification behavior of zirconium diboride [J].

Asl, Mehdi Shahedi ;

Kakroudi, Mahdi Ghassemi ;

Rezvani, Mohammad ;

Golestani-Fard, Farhad .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2015, 50 :140-145

[2] Preparation of polymer-derived Si-B-C-N monoliths by spark plasma sintering technique [J].

Bechelany, Mirna Chaker ;

Salameh, Chrystelle ;

Viard, Antoine ;

Guichaoua, Lise ;

Rossignol, Fabrice ;

Chartier, Thierry ;

Bernard, Samuel ;

Miele, Philippe .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2015, 35 (05) :1361-1374

[3] FORMATION OF C-N THIN-FILMS BY ION-BEAM DEPOSITION [J].

BOYD, KJ ;

MARTON, D ;

TODOROV, SS ;

ALBAYATI, AH ;

KULIK, J ;

ZUHR, RA ;

RABALAIS, JW .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1995, 13 (04) :2110-2122

[4] Polymer-Derived Ceramics: 40 Years of Research and Innovation in Advanced Ceramics [J].

Colombo, Paolo ;

Mera, Gabriela ;

Riedel, Ralf ;

Soraru, Gian Domenico .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2010, 93 (07) :1805-1837

[5]

Crist B.V., 1999, Handbook of Monochromatic XPS Spectra, Volume 1 - The Elements and Native Oxides, V1, P1

[6] Hot-Pressing Kinetics and Densification Mechanisms of Boron Carbide [J].

Du, Xianwu ;

Zhang, Zhixiao ;

Wang, Yang ;

Wang, Jilin ;

Wang, Weimin ;

Wang, Hao ;

Fu, Zhengyi .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2015, 98 (05) :1400-1406

[7] DEPOSITION AND CHARACTERIZATION OF THIN BORON-CARBIDE COATINGS [J].

KUNZLI, H ;

GANTENBEIN, P ;

STEINER, R ;

OELHAFEN, P .

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 1993, 346 (1-3) :41-44

[8] Characterization and optical investigation of BCN film deposited by RF magnetron sputtering [J].

Lei, MK ;

Li, Q ;

Zhou, ZF ;

Bello, I ;

Lee, CS ;

Lee, ST .

THIN SOLID FILMS, 2001, 389 (1-2) :194-199

[9]

Li X. B., 2009, J EUR CERAM SOC, V29, P323

[10] Si-B-C-N monoliths with LaB6-induced well-developed BN(C) flakes [J].

Liang, Bin ;

Yang, Zhihua ;

Miao, Yang ;

Zhu, Qishuai ;

Liao, Xingqi ;

Li, Quan ;

Tian, Zhuo ;

Jia, Dechang ;

Zhou, Yu .

MATERIALS LETTERS, 2017, 187 :36-39

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