Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders

N. L. Canfield, J. V. Crum, J. Matyas, A. Bandyopadhyay, K. S. Weil, L. R. Pederson, J. S. Hardy

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

2 Citations (Scopus)

Abstract

The potential for highly selective, nongalvanic permeation of hydrogen through dense mixed conducting composites at elevated temperatures makes them attractive as hydrogen separation membranes. The glycine-nitrate combustion synthesis technique has been used to co-synthesize a cation-doped barium cerate protonic conducting phase together with a metallic nickel electronic conducting phase (15-35 vol% Ni). Co-synthesis of these phases results in an intimately mixed powder with particle sizes on the order of 10 nm. DTA/TGA of all as-synthesized compositions determined that a calcination temperature of 1000°C was required for full reaction of the cerate components. DTA/TGA and sintering shrinkage dilatometry were performed on calcined powders to determine that a sintering temperature of 1250°C would be adequate for achieving >90% relative density in all compositions. Bars of the material containing 25 vol% Ni were reduced at three different points in the heat treatment process (e.g., before, during, or after sintering). It was determined that there was less porosity in the sample reduced during sintering than any other. It was also seen on SEM that the primary grain size, regardless of when reduction occurred compared to sintering of the material, is less than 5 μm.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages1415-1420
Number of pages6
Volume539-543
EditionPART 2
Publication statusPublished - 2007
Externally publishedYes
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver
Duration: 4 Jul 20068 Jul 2006

Publication series

NameMaterials Science Forum
NumberPART 2
Volume539-543
ISSN (Print)02555476

Other

Other5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
CityVancouver
Period4/7/068/7/06

Fingerprint

Powders
Hydrogen
Sintering
Membranes
Composite materials
Differential thermal analysis
Combustion synthesis
Barium
Nickel
Chemical analysis
Permeation
Nitrates
Calcination
Glycine
Temperature
Cations
Amino acids
Porosity
Positive ions
Particle size

Keywords

  • Hydrogen separation
  • Mixed conducting composite

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Canfield, N. L., Crum, J. V., Matyas, J., Bandyopadhyay, A., Weil, K. S., Pederson, L. R., & Hardy, J. S. (2007). Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders. In Materials Science Forum (PART 2 ed., Vol. 539-543, pp. 1415-1420). (Materials Science Forum; Vol. 539-543, No. PART 2).

Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders. / Canfield, N. L.; Crum, J. V.; Matyas, J.; Bandyopadhyay, A.; Weil, K. S.; Pederson, L. R.; Hardy, J. S.

Materials Science Forum. Vol. 539-543 PART 2. ed. 2007. p. 1415-1420 (Materials Science Forum; Vol. 539-543, No. PART 2).

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

Canfield, NL, Crum, JV, Matyas, J, Bandyopadhyay, A, Weil, KS, Pederson, LR & Hardy, JS 2007, Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders. in Materials Science Forum. PART 2 edn, vol. 539-543, Materials Science Forum, no. PART 2, vol. 539-543, pp. 1415-1420, 5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006, Vancouver, 4/7/06.
Canfield NL, Crum JV, Matyas J, Bandyopadhyay A, Weil KS, Pederson LR et al. Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders. In Materials Science Forum. PART 2 ed. Vol. 539-543. 2007. p. 1415-1420. (Materials Science Forum; PART 2).
Canfield, N. L. ; Crum, J. V. ; Matyas, J. ; Bandyopadhyay, A. ; Weil, K. S. ; Pederson, L. R. ; Hardy, J. S. / Sintering of mixed-conducting composites for hydrogen membranes from nanoscale co-synthesized powders. Materials Science Forum. Vol. 539-543 PART 2. ed. 2007. pp. 1415-1420 (Materials Science Forum; PART 2).
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