Strengthening mechanism and electrochemical characterization of ZrO2 nanoparticles in Nickel-Aluminum alloy for Molten Carbonate Fuel Cells

Title
Strengthening mechanism and electrochemical characterization of ZrO2 nanoparticles in Nickel-Aluminum alloy for Molten Carbonate Fuel Cells
Authors
남석우윤성필한종희그라지아 아카르도Domenico FrattiniAngelo Moreno
Keywords
Anode; Creep; Nanoparticle; MCFC; Zirconia
Issue Date
2017-12
Publisher
Journal of industrial and engineering chemistry
Citation
VOL 56-291
Abstract
In this work the positive effect of zirconia nanoparticles in Nickel– Aluminum anodes is investigated. Results showed that, as the zirconia content increases, bending strength and creep resistance are improved. Mechanical strength increases from 5.94 to 11.38 kgf cm− 2 and creep is reduced up to 3.31%. Morphology and microstructural analysis revealed that nanoparticles adhere strongly on the surface of larger metal particles and microstructure is strengthened at grain level. The diffusion of Aluminum atoms into different vacancies reduces dislocations movement. A part these mechanisms, charge and mass transfer resistance are lower and the internal resistance after 500 h at 650 °C is 0.24 mΩ cm2.
URI
http://pubs.kist.re.kr/handle/201004/66325
ISSN
1226-086X
Appears in Collections:
KIST Publication > Article
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