Forming of miniature components from powders by combining field-activated sintering and micro-forming

Y. Qin, J. Zhao, K. Huang, M. Zulkipli, H. Hijji, Y. Yang, M. Wu, D. Yin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Micro-FAST is a process concept which scales down conventional FAST to the micro-scale process (dealing with miniature an micro-sized components) and it combines the sintering process with a micro-forming process to enable shaping components under coupled multi-fields actions and hence, to achieve high-density, near-net-shaped components with high efficiency. The main techniques developed for overcoming the barriers for the applications of FAST at the miniature/micro-scales include: (i). Directly pressing/forming loose powders in the die without using binders; (ii). Combining heating and shaping to enable complex shapes/features; and (iii). Dedicatedly controlling fusion bonding and material’s plastic flow to enable high-quality forming. Forming from powders without using binders significantly shortened the process cycle, which also led to high-purity of the parts formed; Combining forming and sintering has led to high-density components produced as well as achieving complex-shaped components; Large current density (e.g., >100~400 KA/cm-2) enables very high heating rates and using small volumes of materials results in high cooling rates, leading to much shorter forming/sintering cycles which enables consolidation of micro/nanocomposites into bulk-sized components while also preserving their micro/nanostructures.
LanguageEnglish
Pages1212-1217
Number of pages6
JournalProcedia Engineering
Volume207
Early online date15 Nov 2017
DOIs
Publication statusE-pub ahead of print - 15 Nov 2017
Event12th International Conference on the Technology of Plasticity - Cambridge, United Kingdom
Duration: 17 Sep 201722 Sep 2017

Fingerprint

Sintering
Powders
Binders
Heating rate
Plastic flow
Consolidation
Nanostructures
Nanocomposites
Current density
Fusion reactions
Cooling
Heating

Keywords

  • powder sintering
  • field activatd sintering technology
  • micro forming
  • micro-FAST

Cite this

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title = "Forming of miniature components from powders by combining field-activated sintering and micro-forming",
abstract = "Micro-FAST is a process concept which scales down conventional FAST to the micro-scale process (dealing with miniature an micro-sized components) and it combines the sintering process with a micro-forming process to enable shaping components under coupled multi-fields actions and hence, to achieve high-density, near-net-shaped components with high efficiency. The main techniques developed for overcoming the barriers for the applications of FAST at the miniature/micro-scales include: (i). Directly pressing/forming loose powders in the die without using binders; (ii). Combining heating and shaping to enable complex shapes/features; and (iii). Dedicatedly controlling fusion bonding and material’s plastic flow to enable high-quality forming. Forming from powders without using binders significantly shortened the process cycle, which also led to high-purity of the parts formed; Combining forming and sintering has led to high-density components produced as well as achieving complex-shaped components; Large current density (e.g., >100~400 KA/cm-2) enables very high heating rates and using small volumes of materials results in high cooling rates, leading to much shorter forming/sintering cycles which enables consolidation of micro/nanocomposites into bulk-sized components while also preserving their micro/nanostructures.",
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Forming of miniature components from powders by combining field-activated sintering and micro-forming. / Qin, Y.; Zhao, J.; Huang, K.; Zulkipli, M.; Hijji, H.; Yang, Y.; Wu, M.; Yin, D.

In: Procedia Engineering, Vol. 207, 15.11.2017, p. 1212-1217.

Research output: Contribution to journalArticle

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AU - Qin, Y.

AU - Zhao, J.

AU - Huang, K.

AU - Zulkipli, M.

AU - Hijji, H.

AU - Yang, Y.

AU - Wu, M.

AU - Yin, D.

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