Preparation of mullite-TiB2-CNTs hybrid composite through spark plasma sintering

被引：175

作者：

Orooji, Yasin ^{[1
]}

Ghasali, Ehsan ^{[1
,2
]}

Moradi, Mostafa ^{[3
]}

Derakhshandeh, Mohammad Reza ^{[2
]}

Alizadeh, Masoud ^{[2
]}

Asl, Mehdi Shahedi ^{[4
]}

Ebadzadeh, Touradj ^{[2
]}

机构：

[1] Nanjing Forestry Univ, Coll Mat Sci & Engn, 159 Longpan Rd, Nanjing 210037, Jiangsu, Peoples R China

[2] Mat & Energy Res Ctr, Ceram Dept, Alborz, Iran

[3] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

[4] Univ Mohaghegh Ardabili, Dept Mech Engn, Ardebil, Iran

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 13期

关键词：

Mullite; Titanium diboride; Composite; Hybrid; Spark plasma sintering; MECHANICAL-PROPERTIES; CARBON NANOTUBE; MULLITE; MICROSTRUCTURE; TEMPERATURE; MICROWAVE; FABRICATION; PARAMETERS; STRENGTH; REMOVAL;

D O I：

10.1016/j.ceramint.2019.05.154

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：

A near fully dense mullite-TiB2-CNTs hybrid composite was prepared successfully trough spark plasma sintering. 1 wt%CNT and 10 wt%TiB2 were mixed with nano-sized mullite powders using a high energy mixer mill. Spark plasma sintering was carried out at 1350 degrees C under the primary and final pressure of 10 MPa and 30 MPa, respectively. XRD results showed mullite and TiB2 as dominant crystalline phases accompanied by tiny peaks of alumina. The microstructure of prepared composites demonstrated uniform distribution of TiB2 reinforcements in mullite matrix without any pores and porosities as a result of near fully densified spark plasma sintered composite. The fracture surface of composite revealed a proper bonding of TiB2 with mullite matrix and also areas with CNTs tunneling and superficies as a result of pulling-out phenomenon. The flexural strength of 531 +/- 28 MPa, Vickers harness of 18.31 +/- 0.3 GPa, and fracture toughness of 5.46 +/- 0.12 MPa m(-1/2) were achieved for prepared composites as the measured mechanical properties.

引用

页码：16288 / 16296

页数：9

共 55 条

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