Spark plasma sintering of silver nanopowder

H. B. Ng; C. Shearwood; T. J. White; L. G. Yu; K. A. Khor

doi:10.1117/12.759383

Spark plasma sintering of silver nanopowder

H. B. Ng, C. Shearwood, T. J. White, L. G. Yu, K. A. Khor

Department of Mechanical Engineering

Nanyang Technological University

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

2 Citations (SciVal)

Abstract

The spark plasma sintering behaviour of silver nanopowder prepared by the electro-explosion method was investigated. Consolidation was carried out from 50°C to 800°C for 5 mins at 34 MPa with differential scanning calorimetry indicating a sintering onset temperature as low as 160°C and an activation energy of 86±1 kJ/mol. Near full density resulted from treatment at 300°C, and at higher temperatures a normal Hall-Petch relation is obeyed. The enhancement of Vicker's hardness to 1000MPa for materials sintered at 300°C is three times greater than for silver annealed in a conventional way. While polysynthetic twinning contributes to superior hardness, the primary cause is the sub-micron grain size.

Original language	English
Title of host publication	BioMEMS and Nanotechnology III
Place of Publication	U. S. A.
Publisher	SPIE
ISBN (Print)	9780819469700
DOIs	https://doi.org/10.1117/12.759383
Publication status	Published - 27 Dec 2007
Event	BioMEMS and Nanotechnology III - Canberra, ACT, Australia Duration: 5 Dec 2007 → 7 Dec 2007

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	6799
ISSN (Print)	1605-7422

Conference

Conference	BioMEMS and Nanotechnology III
Country/Territory	Australia
City	Canberra, ACT
Period	5/12/07 → 7/12/07

Keywords

Grain growth
Hardness
Nanocrystalline materials
Nanopowder
Silver
Sintering
Twinning

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Biomaterials
Radiology Nuclear Medicine and imaging

Access to Document

10.1117/12.759383

Cite this

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title = "Spark plasma sintering of silver nanopowder",

abstract = "The spark plasma sintering behaviour of silver nanopowder prepared by the electro-explosion method was investigated. Consolidation was carried out from 50°C to 800°C for 5 mins at 34 MPa with differential scanning calorimetry indicating a sintering onset temperature as low as 160°C and an activation energy of 86±1 kJ/mol. Near full density resulted from treatment at 300°C, and at higher temperatures a normal Hall-Petch relation is obeyed. The enhancement of Vicker's hardness to 1000MPa for materials sintered at 300°C is three times greater than for silver annealed in a conventional way. While polysynthetic twinning contributes to superior hardness, the primary cause is the sub-micron grain size.",

keywords = "Grain growth, Hardness, Nanocrystalline materials, Nanopowder, Silver, Sintering, Twinning",

author = "Ng, {H. B.} and C. Shearwood and White, {T. J.} and Yu, {L. G.} and Khor, {K. A.}",

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TY - GEN

T1 - Spark plasma sintering of silver nanopowder

AU - Ng, H. B.

AU - Shearwood, C.

AU - White, T. J.

AU - Yu, L. G.

AU - Khor, K. A.

PY - 2007/12/27

Y1 - 2007/12/27

N2 - The spark plasma sintering behaviour of silver nanopowder prepared by the electro-explosion method was investigated. Consolidation was carried out from 50°C to 800°C for 5 mins at 34 MPa with differential scanning calorimetry indicating a sintering onset temperature as low as 160°C and an activation energy of 86±1 kJ/mol. Near full density resulted from treatment at 300°C, and at higher temperatures a normal Hall-Petch relation is obeyed. The enhancement of Vicker's hardness to 1000MPa for materials sintered at 300°C is three times greater than for silver annealed in a conventional way. While polysynthetic twinning contributes to superior hardness, the primary cause is the sub-micron grain size.

AB - The spark plasma sintering behaviour of silver nanopowder prepared by the electro-explosion method was investigated. Consolidation was carried out from 50°C to 800°C for 5 mins at 34 MPa with differential scanning calorimetry indicating a sintering onset temperature as low as 160°C and an activation energy of 86±1 kJ/mol. Near full density resulted from treatment at 300°C, and at higher temperatures a normal Hall-Petch relation is obeyed. The enhancement of Vicker's hardness to 1000MPa for materials sintered at 300°C is three times greater than for silver annealed in a conventional way. While polysynthetic twinning contributes to superior hardness, the primary cause is the sub-micron grain size.

KW - Grain growth

KW - Hardness

KW - Nanocrystalline materials

KW - Nanopowder

KW - Silver

KW - Sintering

KW - Twinning

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SN - 9780819469700

T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - BioMEMS and Nanotechnology III

PB - SPIE

CY - U. S. A.

T2 - BioMEMS and Nanotechnology III

Y2 - 5 December 2007 through 7 December 2007

ER -

Spark plasma sintering of silver nanopowder

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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