The diffusion of oxygen into SiO 2 encapsulated polycrystalline CdSe films and the diffusion of indium into polycrystalline CdSe films have been investigated over the temperature range 350 C to 500 C using SIMS. The oxygen profiles in the SiO 2 indicated that both isotopic oxygen exchange and the...
Oxygen-diffusion kinetics in densified, amorphous SiO_ {2} The dynamics of intrinsic defect creation and annealing have been studied in dry, amorphous SiO2 subjected to a hydrostatic pressure of 5 GPa at 600?deC. The compaction produced does not in itself result in the creation of significant ...
Oxygen diffusion and consumption in active aerobic granules of heterogeneous structure The interior structure of aerobic granules is highly heterogeneous, hence, affecting the transport and reaction processes in the granules. The granule stru... ZC Chiu,MY Chen,DJ Lee,... - 《Applied Microbiology &...
Marple, and C.R. Masson, “Diffusion and Electrochemical Transport of Oxygen in PbO-SiO 2 Melts,” Can. Met. Quart. , 20 (1981), pp. 215–223.Caley W F,Marple B R,Masson C R.Diffusion and electrochemical transport of oxygenin PbO-SiO2melts[].Canadian Metallurgical Quarterly.1981...
However, the oxide ion migration in the palmierite-like structure is due to a continuous 2D diffusion pathway produced by a random distribution of intrinsic oxygen vacancies and available oxygen sites [31]. The structure of BWNO shows hybrid trimer stacks formed by the distribution of cation ...
In Part 1 of the present paper the internal friction of XNa2O⋅(1-X)B2O3⋅2SiO2 glasses was measured and the cause for the high-temperature peak was explained on the basis of the theory on the structure of alkali borosilicate glass proposed by Dell et al. In the present paper diffus...
Oxygen self-diffusion measurements determined below and above the glass transition temperature in a cordierite glass are reported. The diffusion experiments were performed by the solid-gas isotope exchange method using O as a tracer in H-HO and Ar/Oatmospheres. The O diffusion profiles were establis...
The oxygen diffusion is confined very close to the crucible wall and the melt/gas interface. A thin layer of a sharp gradient of the oxygen concentration is formed next to these boundaries. The oxygen flux at the boundaries can be approximately estimated, given the thickness of the boundary ...
Diffusion Reaction of Oxygen in HfO2/SiO2/Si Stacks We study the oxidation mechanism of silicon in the presence of a thin HfO2 layer. We performed a set of annealing in 18O2 atmosphere on HfO2/SiO2/Si stacks... S.,Ferrari,M.,... - 《Journal of Physical Chemistry B》 被引量: 33发表...
The self-diffusion coefficients calculated from these profiles agree with those reported for tracer diffusion in ν-SiO2, and the diffusion coefficient calculated from the scale growth is consistent with reported O2 permeation data. An important parameter that describes the double-oxidation behavior is ...