of prior heat treating ranging from 1000 to 2800ยฐC. Those determined were lattice parameters, crystallite sizes, X-ray anisotropy, electrical resistivity, bulk density, helium density, pore spectrum and neutron irradiation stability at 715ยฐC. A correlation between these properties and the dimensiona
The effect of small deviations from isotropy on the irradiation induced dimensional changes of pyrolytic carbons
โ Scribed by J.L Kaae
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 130 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
Chemical vapor deposition of carbon from propylene on a nickel substrate at 800ยฐC was studied using a microbalance and a scanning electron microscope. On samples reduced with hydrogen the deposition rate was found to be significantly less than on those not so treated. The difference is attributed to oxygen chemisorbed on the nickel.
๐ SIMILAR VOLUMES
Comparative study of the magnetic susceptibility, resistivity, magnetoresistance, Hall coefficient and ESR signal has been carried out for pyrolytic carbon heattreated from 1800ยฐC to 3000ยฐC in argon or chlorine atmosphere. It has been found that chlorine intensifies the change of the electronic prop
The effects of room temperature irradiation on the dynamic elastic modulus, E', and the internal friction, Q-l, of graphite have been investigated over a range of reactor radiation doses (-lOI to 10'" nvt-> 50 keV). Well-ordered graphite formed by stress-annealing pyrolytic carbon at high temperatur
The small angle scattering from a number of graphites which had been neutron irradiated at 1050ยฐC to doses up to 5 X 10" n.cm-\* (Dido Nickel Equivalent) has been studied. Irradiation results in a decrease in the number of pores and regions of disorder whose radius of gyration is -100 A and an incre
Measurement have been made of the dimensional changes induced by fast neutrons in natural graphite, annealed pyrolytic carbon, catalytically graphitised carbon, and turbostratic carbon, for irradiation temperatures below 1300ยฐC. Plots of the rate of change of the crystallite dimensions vs. temperatu