Spark plasma sintering assisted diamond formation from carbon nanotubes at very low pressure

被引：24

作者：

Shen, J ^{[1
]}

Zhang, FM

Sun, JF

Sun, YQ

McCartney, DG

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

[3] Univ Nottingham, Sch Mech Mat & Mfg Engn, Nottingham NG7 2RD, England

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 09期

关键词：

D O I：

10.1088/0957-4484/17/9/018

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thermal stability of multi-walled carbon nanotubes (MWCNTs) was assessed under various spark plasma sintering (SPS) conditions. Our experimental results show that the MWCNTs transform into micrometre-sized diamonds at 1500 degrees C and only 80 MPa during SPS. The resulting diamonds are single or agglomerated crystalline particles, with diameters up to 100 mu m, and are sheathed with an amorphous carbon layer and a residue of a few CNT layers. The SPS-assisted transition from MWCNTs to diamond was investigated, and a model for CNT breakage is proposed to describe the initial diamond growth. Taking into account the rapid and simple operating features of SPS, we believe that this process exhibits great potential for diamond synthesis on a large scale.

引用

页码：2187 / 2191

页数：5

共 20 条

[1] OPENING CARBON NANOTUBES WITH OXYGEN AND IMPLICATIONS FOR FILLING [J].

AJAYAN, PM ;

EBBESEN, TW ;

ICHIHASHI, T ;

IIJIMA, S ;

TANIGAKI, K ;

HIURA, H .

NATURE, 1993, 362 (6420) :522-525

[2] ALIGNED CARBON NANOTUBE ARRAYS FORMED BY CUTTING A POLYMER RESIN-NANOTUBE COMPOSITE [J].

AJAYAN, PM ;

STEPHAN, O ;

COLLIEX, C ;

TRAUTH, D .

SCIENCE, 1994, 265 (5176) :1212-1214

[3] Carbon onions as nanoscopic pressure cells for diamond formation [J].

Banhart, F ;

Ajayan, PM .

NATURE, 1996, 382 (6590) :433-435

[4]

GAO L, 2001, CARBON, V39, P287

[5] Conversion of nickel coated carbon nanotubes to diamond under high pressure and high temperature [J].

Han, WQ ;

Fan, SS ;

Li, QQ ;

Zhang, CL .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1998, 37 (9AB) :L1085-L1086

[6] Preparation of diamond films by hot filament chemical vapor deposition and nucleation by carbon nanotubes [J].

Hou, YQ ;

Zhuang, DM ;

Zhang, G ;

Wu, MS ;

Liu, JJ .

APPLIED SURFACE SCIENCE, 2002, 185 (3-4) :303-308

[7] Processing and properties of carbon nanotubes-nano-SiC ceramic [J].

Ma, RZ ;

Wu, J ;

Wei, BQ ;

Liang, J ;

Wu, DH .

JOURNAL OF MATERIALS SCIENCE, 1998, 33 (21) :5243-5246

[8] Nanocrystalline diamond from carbon nanotubes [J].

Sun, LT ;

Gong, JL ;

Zhu, ZY ;

Zhu, DZ ;

He, SX ;

Wang, ZX ;

Chen, Y ;

Hu, G .

APPLIED PHYSICS LETTERS, 2004, 84 (15) :2901-2903

[9] Diamond nanorods from carbon nanotubes [J].

Sun, LT ;

Gong, JL ;

Zhu, DZ ;

Zhu, ZY ;

He, SX .

ADVANCED MATERIALS, 2004, 16 (20) :1849-+

[10] Cubic and hexagonal structures of diamond nanocrystals formed upon pulsed laser induced liquid-solid interfacial reaction [J].

Wang, JB ;

Zhang, CY ;

Zhong, XL ;

Yang, GW .

CHEMICAL PHYSICS LETTERS, 2002, 361 (1-2) :86-90

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