Process parameter optimization of pulsed electric current sintering of recycled WC-8Co powder

Mehmet Erkin Cura; Juha Lagerbom; Riina Ritasalo; Jesse Syrén; Juho Lotta; Outi Söderberg; Tapio Ritvonen; Erja Turunen; Simo-Pekka Hannula

doi:10.3176/eng.2009.4.02

Process parameter optimization of pulsed electric current sintering of recycled WC-8Co powder

Mehmet Erkin Cura, Juha Lagerbom, Riina Ritasalo, Jesse Syrén, Juho Lotta, Outi Söderberg, Tapio Ritvonen, Erja Turunen, Simo-Pekka Hannula

Helsinki University of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

The WC-8Co powder, crushed and milled from recycled hard metals, was compacted with the pulsed electric current sintering method. The smallest particles were of the size about 0.4 ìm and agglomerates 1-7 ìm. Effect of the sintering temperature and heating rate were studied. Hard metal was sintered to a density of 98.3% at 1613 K within 3.5 min under 16 MPa pressure. Density and hardness were highest for the slowest heating regime, 98.1% and HV1 1981 kg/mm2, respectively. Heating speed 100 K/min was used for fabrication of fully densed samples, sintered under pressure of 100 MPa, at 1593 K in 3 min.

Original language	English
Pages (from-to)	255-265
Journal	Estonian Journal of Engineering
Volume	15
Issue number	4
DOIs	https://doi.org/10.3176/eng.2009.4.02
Publication status	Published - 2009
MoE publication type	A1 Journal article-refereed
Event	18th International Baltic Conference on Engineering Materials and Tribology, BALTMATTRIB 2009 - Tallinn, Estonia Duration: 22 Oct 2009 → 23 Oct 2009

Keywords

pulsed electric current sintering
WC-Co
microstructure
density
hardness

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10.3176/eng.2009.4.02

https://publications.vtt.fi/julkaisut/muut/2009/eng-2009-4-255-265.pdf

Cite this

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title = "Process parameter optimization of pulsed electric current sintering of recycled WC-8Co powder",

abstract = "The WC-8Co powder, crushed and milled from recycled hard metals, was compacted with the pulsed electric current sintering method. The smallest particles were of the size about 0.4 {\`i}m and agglomerates 1-7 {\`i}m. Effect of the sintering temperature and heating rate were studied. Hard metal was sintered to a density of 98.3% at 1613 K within 3.5 min under 16 MPa pressure. Density and hardness were highest for the slowest heating regime, 98.1% and HV1 1981 kg/mm2, respectively. Heating speed 100 K/min was used for fabrication of fully densed samples, sintered under pressure of 100 MPa, at 1593 K in 3 min.",

keywords = "pulsed electric current sintering, WC-Co, microstructure, density, hardness",

author = "Cura, {Mehmet Erkin} and Juha Lagerbom and Riina Ritasalo and Jesse Syr{\'e}n and Juho Lotta and Outi S{\"o}derberg and Tapio Ritvonen and Erja Turunen and Simo-Pekka Hannula",

year = "2009",

doi = "10.3176/eng.2009.4.02",

language = "English",

volume = "15",

pages = "255--265",

journal = "Estonian Journal of Engineering",

issn = "1736-6038",

publisher = "Estonian Academy of Sciences",

number = "4",

note = "18th International Baltic Conference on Engineering Materials and Tribology, BALTMATTRIB 2009, BALTMATTRIB 2009 ; Conference date: 22-10-2009 Through 23-10-2009",

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TY - JOUR

T1 - Process parameter optimization of pulsed electric current sintering of recycled WC-8Co powder

AU - Cura, Mehmet Erkin

AU - Lagerbom, Juha

AU - Ritasalo, Riina

AU - Syrén, Jesse

AU - Lotta, Juho

AU - Söderberg, Outi

AU - Ritvonen, Tapio

AU - Turunen, Erja

AU - Hannula, Simo-Pekka

PY - 2009

Y1 - 2009

N2 - The WC-8Co powder, crushed and milled from recycled hard metals, was compacted with the pulsed electric current sintering method. The smallest particles were of the size about 0.4 ìm and agglomerates 1-7 ìm. Effect of the sintering temperature and heating rate were studied. Hard metal was sintered to a density of 98.3% at 1613 K within 3.5 min under 16 MPa pressure. Density and hardness were highest for the slowest heating regime, 98.1% and HV1 1981 kg/mm2, respectively. Heating speed 100 K/min was used for fabrication of fully densed samples, sintered under pressure of 100 MPa, at 1593 K in 3 min.

AB - The WC-8Co powder, crushed and milled from recycled hard metals, was compacted with the pulsed electric current sintering method. The smallest particles were of the size about 0.4 ìm and agglomerates 1-7 ìm. Effect of the sintering temperature and heating rate were studied. Hard metal was sintered to a density of 98.3% at 1613 K within 3.5 min under 16 MPa pressure. Density and hardness were highest for the slowest heating regime, 98.1% and HV1 1981 kg/mm2, respectively. Heating speed 100 K/min was used for fabrication of fully densed samples, sintered under pressure of 100 MPa, at 1593 K in 3 min.

KW - pulsed electric current sintering

KW - WC-Co

KW - microstructure

KW - density

KW - hardness

U2 - 10.3176/eng.2009.4.02

DO - 10.3176/eng.2009.4.02

M3 - Article

SN - 1736-6038

VL - 15

SP - 255

EP - 265

JO - Estonian Journal of Engineering

JF - Estonian Journal of Engineering

IS - 4

T2 - 18th International Baltic Conference on Engineering Materials and Tribology, BALTMATTRIB 2009

Y2 - 22 October 2009 through 23 October 2009

ER -

Process parameter optimization of pulsed electric current sintering of recycled WC-8Co powder

Abstract

Keywords

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