Eigenschaftsänderungen von SiO2-Cristobalit durch Bestrahlung mit schnellen Neutronen und durch Einbau von Fremdatomen
Open Access
- 1 July 1960
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 15 (7) , 634-640
- https://doi.org/10.1515/zna-1960-0710
Abstract
By irradiation with 1.3 · 1019 fast neutrous per cm2 at about 50°C the α ⇄ β ·inversion of pure SiO2-Cristobalite is markedly displaced to lower temperatures. The lattice parameters increase. Repeated tempering up to 500°C does not change the irradiated state. Tempering at 1600°C gives full recovery and restores the inversion temperatures before irradiation. — An addition of TiO2 to pure SiO2-Cristobalite produces a Cristobalite with similar inversion temperatures as irradiated Cristobalite. The lattice parameters are also increased.Keywords
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