Can Nanotubes Help Thermal Conductivity of Zirconia, Thin Films?
Question:
Carbon nanotubes enhance the thermal conductivity of polymers (http://www.nanotechnews.com/nano/1019182953/index_html) but get ceramics less heat conductive(http://www.rice.edu/projects/reno/rn/19990121/sidebar.html) amazing eh? Olivier – Hide quoted text — Show quoted text -> I was reading about how thin film and microtubular zirconia > (yttrium-stabilized) are being investigated for creation of lower > temperature solid oxide fuel cells. > I had also read about how carbon nanotubes had been put into epoxy and > even solar photoelectric films to increase their thermal and > electrical conductivities, to improve their performance. > Would similarly loading nanotubes into thin film zirconia be possible > and useful, to more efficiently heat the solid oxide electrodes to > efficient reaction temperature? I’m told that for solid oxide fuel > cells, the temperatures are quite high, and thus the need for > improving performance vs temperature. > Stabilized zirconia has a truely awful thermal conductivity. That is > why it is plasma blasted onto internally-cooled turbine blades. There > are powerplants in use whose turbine operating temps exceed the > melting points of their superalloy blades. Thermodynamics proposes, > kinetics disposes. > Nanotubes would short out the solid electrolyte, yes?
Response:
I was reading about how thin film and microtubular zirconia (yttrium-stabilized) are being investigated for creation of lower temperature solid oxide fuel cells. I had also read about how carbon nanotubes had been put into epoxy and even solar photoelectric films to increase their thermal and electrical conductivities, to improve their performance. Would similarly loading nanotubes into thin film zirconia be possible and useful, to more efficiently heat the solid oxide electrodes to efficient reaction temperature? I’m told that for solid oxide fuel cells, the temperatures are quite high, and thus the need for improving performance vs temperature.
Response:
> I was reading about how thin film and microtubular zirconia > (yttrium-stabilized) are being investigated for creation of lower > temperature solid oxide fuel cells. > I had also read about how carbon nanotubes had been put into epoxy and > even solar photoelectric films to increase their thermal and > electrical conductivities, to improve their performance. > Would similarly loading nanotubes into thin film zirconia be possible > and useful, to more efficiently heat the solid oxide electrodes to > efficient reaction temperature? I’m told that for solid oxide fuel > cells, the temperatures are quite high, and thus the need for > improving performance vs temperature.
See the article in last week’s Science magazine. http://www.sciencemag.org — Many thanks, Don Lancaster Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 Please visit my GURU’s LAIR web site at http://www.tinaja.com
Response:
> I was reading about how thin film and microtubular zirconia > (yttrium-stabilized) are being investigated for creation of lower > temperature solid oxide fuel cells. > I had also read about how carbon nanotubes had been put into epoxy and > even solar photoelectric films to increase their thermal and > electrical conductivities, to improve their performance. > Would similarly loading nanotubes into thin film zirconia be possible > and useful, to more efficiently heat the solid oxide electrodes to > efficient reaction temperature? I’m told that for solid oxide fuel > cells, the temperatures are quite high, and thus the need for > improving performance vs temperature.
Stabilized zirconia has a truely awful thermal conductivity. That is why it is plasma blasted onto internally-cooled turbine blades. There are powerplants in use whose turbine operating temps exceed the melting points of their superalloy blades. Thermodynamics proposes, kinetics disposes. Nanotubes would short out the solid electrolyte, yes? — Uncle Al http://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals) "Quis custodiet ipsos custodes?" The Net!
Response:
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