Research output: Contribution to journal › Article › peer-review
Hydrogen transport mechanism through Ni-NiO system investigation. / Gabis, I. E.; Kompaniets, T. N.; Kurakin, V. A.; Kurdyumov, A. A.; Piven', V. A.
In: Fiziko-Khimicheskaya Mekhanika Materialov, Vol. 27, No. 4, 01.07.1991, p. 18-22.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Hydrogen transport mechanism through Ni-NiO system investigation
AU - Gabis, I. E.
AU - Kompaniets, T. N.
AU - Kurakin, V. A.
AU - Kurdyumov, A. A.
AU - Piven', V. A.
PY - 1991/7/1
Y1 - 1991/7/1
N2 - A new version of the concentration wave method is helpful is estimating the mechanism of hydrogen transfer through a NiO film. A mathematical model which adequately describes the process is offered. Arguments are advanced in favour of association-dissociation processes on inner NiO-Ni surfaces rather than on free NiO surfaces and in support of hydrogen movement as molecules along the oxide with a high porosity. The hydrogen diffusion coefficients between 643-783 K are determined in Ni and NiO (D1 and D2, respectively) and given by equations D1=4×10-3 exp (-4200÷T) and D2=200 exp (-17000÷T) cm2÷s. The D1 values are shown to be in close agreement with the data of measurements on nonoxidized Ni.
AB - A new version of the concentration wave method is helpful is estimating the mechanism of hydrogen transfer through a NiO film. A mathematical model which adequately describes the process is offered. Arguments are advanced in favour of association-dissociation processes on inner NiO-Ni surfaces rather than on free NiO surfaces and in support of hydrogen movement as molecules along the oxide with a high porosity. The hydrogen diffusion coefficients between 643-783 K are determined in Ni and NiO (D1 and D2, respectively) and given by equations D1=4×10-3 exp (-4200÷T) and D2=200 exp (-17000÷T) cm2÷s. The D1 values are shown to be in close agreement with the data of measurements on nonoxidized Ni.
UR - http://www.scopus.com/inward/record.url?scp=0026193723&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0026193723
VL - 27
SP - 18
EP - 22
JO - ФИЗИКО-ХИМИЧЕСКАЯ МЕХАНИКА МАТЕРИАЛОВ
JF - ФИЗИКО-ХИМИЧЕСКАЯ МЕХАНИКА МАТЕРИАЛОВ
SN - 0430-6252
IS - 4
ER -
ID: 49082719