Influence of processing parameters on the induction sintering of copper powder metal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Induction sintering is not new in the powder metal (PM) industry. However, this method has hardly been used for sintering powders admixed with lubricants. In this study induction heating was used to sinter two variants of copper powder admixed with Acrawax, one with uniform particle size of 25µm and the other with a bimodal distribution of 20 urn and 60 urn particle sizes. Two heating rates and two dwell times were used to investigate the effects of processing parameters on the microstructure and mechanical properties of these two types of powders. The results show that induction sintering is a potential sintering method for powder metal parts, however, optimal processing parameters/ conditions such as temperature, heating rate, sintering time, have to be determined to ensure the parts are sintered properly. Induction sintering for 6 min at a rate of 100°C/min developed a microstructure that had fewer pore density by -50% less than conventionally sintered parts. The corresponding microhardness was as high as -17% higher than that of conventionally sintered parts. On the other hand, rapid heating cause poor sinterability, and unequal-sized powder promote coarsening and hot spots.

Original languageEnglish (US)
Title of host publicationAdvances in Powder Metallurgy and Particulate Materials - 2018
Subtitle of host publicationProceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
PublisherMetal Powder Industries Federation
Pages316-327
Number of pages12
ISBN (Electronic)9781943694181
StatePublished - Jan 1 2018
Event2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018 - San Antonio, United States
Duration: Jun 17 2018Jun 20 2018

Publication series

NameAdvances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
Volume2018-June

Conference

Conference2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
CountryUnited States
CitySan Antonio
Period6/17/186/20/18

Fingerprint

Copper powder
metal powder
Powder metals
induction
sintering
Sintering
copper
Processing
Powders
Heating rate
heating
Particle size
induction heating
microstructure
Microstructure
Induction heating
dwell
Coarsening
lubricants
Microhardness

All Science Journal Classification (ASJC) codes

  • Metals and Alloys
  • Materials Chemistry
  • Surfaces and Interfaces

Cite this

Waryoba, D. R. (2018). Influence of processing parameters on the induction sintering of copper powder metal. In Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018 (pp. 316-327). (Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018; Vol. 2018-June). Metal Powder Industries Federation.
Waryoba, Daudi Rigenda. / Influence of processing parameters on the induction sintering of copper powder metal. Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018. Metal Powder Industries Federation, 2018. pp. 316-327 (Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018).
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abstract = "Induction sintering is not new in the powder metal (PM) industry. However, this method has hardly been used for sintering powders admixed with lubricants. In this study induction heating was used to sinter two variants of copper powder admixed with Acrawax, one with uniform particle size of 25µm and the other with a bimodal distribution of 20 urn and 60 urn particle sizes. Two heating rates and two dwell times were used to investigate the effects of processing parameters on the microstructure and mechanical properties of these two types of powders. The results show that induction sintering is a potential sintering method for powder metal parts, however, optimal processing parameters/ conditions such as temperature, heating rate, sintering time, have to be determined to ensure the parts are sintered properly. Induction sintering for 6 min at a rate of 100°C/min developed a microstructure that had fewer pore density by -50{\%} less than conventionally sintered parts. The corresponding microhardness was as high as -17{\%} higher than that of conventionally sintered parts. On the other hand, rapid heating cause poor sinterability, and unequal-sized powder promote coarsening and hot spots.",
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Waryoba, DR 2018, Influence of processing parameters on the induction sintering of copper powder metal. in Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018. Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018, vol. 2018-June, Metal Powder Industries Federation, pp. 316-327, 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018, San Antonio, United States, 6/17/18.

Influence of processing parameters on the induction sintering of copper powder metal. / Waryoba, Daudi Rigenda.

Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018. Metal Powder Industries Federation, 2018. p. 316-327 (Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018; Vol. 2018-June).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Waryoba DR. Influence of processing parameters on the induction sintering of copper powder metal. In Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018. Metal Powder Industries Federation. 2018. p. 316-327. (Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018).