Initiation of metamorphosis of porosity during liquid-phase sintering in microgravity

Yubin He, Saiyin Ye, Jamil Naser, Anjilivelil K. Kuruvilla, James E. Smith, Alexander Ivanov, Yu K. Bratuchin, G. F. Putin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In microgravity liquid-phase sintering (LPS), the reduction of sedimentation-driven convection permits the study of pore formation and metamorphosis otherwise obscured by gravity. These motions result from interfacial energy differences, instabilities, and grain coarsening along the interface between phases. A theoretical model is presented to monitor the trends of shape changes of a pore in microgravity. LPS experiments were conducted on four suborbital sounding rockets, six experiments on five different Space Shuttle missions, and on a mission to the Mir Station where 67 samples were processed in the Russian Optizone furnace for various times. Results from these flight experiments were used to investigate pore metamorphosis and grain coarsening for various copper and silver based systems at different liquid volume fractions. Results for pore formation in the Fe ^ Cu system processed under argon are presented, along with an analysis of the microstructures in the region near the bubble.

Original languageEnglish
Pages (from-to)613-620
Number of pages8
JournalHigh Temperatures - High Pressures
Volume32
Issue number5
DOIs
Publication statusPublished - Jan 1 2000

Fingerprint

liquid phase sintering
Liquid phase sintering
Microgravity
microgravity
Porosity
Coarsening
porosity
Sounding rockets
Phase interfaces
Argon
Space Shuttle missions
Experiments
Space shuttles
Silver
Sedimentation
Interfacial energy
sounding rockets
interfacial energy
Copper
Volume fraction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

Cite this

Initiation of metamorphosis of porosity during liquid-phase sintering in microgravity. / He, Yubin; Ye, Saiyin; Naser, Jamil; Kuruvilla, Anjilivelil K.; Smith, James E.; Ivanov, Alexander; Bratuchin, Yu K.; Putin, G. F.

In: High Temperatures - High Pressures, Vol. 32, No. 5, 01.01.2000, p. 613-620.

Research output: Contribution to journalArticle

He, Y, Ye, S, Naser, J, Kuruvilla, AK, Smith, JE, Ivanov, A, Bratuchin, YK & Putin, GF 2000, 'Initiation of metamorphosis of porosity during liquid-phase sintering in microgravity', High Temperatures - High Pressures, vol. 32, no. 5, pp. 613-620. https://doi.org/10.1068/htrt200
He, Yubin ; Ye, Saiyin ; Naser, Jamil ; Kuruvilla, Anjilivelil K. ; Smith, James E. ; Ivanov, Alexander ; Bratuchin, Yu K. ; Putin, G. F. / Initiation of metamorphosis of porosity during liquid-phase sintering in microgravity. In: High Temperatures - High Pressures. 2000 ; Vol. 32, No. 5. pp. 613-620.
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