Research in the Area of Preparing Materials Based on Fuzed Quartz HCBS. Part 9. Effect of Alkali Additions on Material Cristobalitization and Thermal Expansion After Nonisothermal Heating1


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The effect of alkali-containing additive of water soluble lump silicate on the degree of cristobalitization and thermal expansion of specimens based on fuzed quartz HCBS is studied. The additive content (for Na20) is varied within the limits of 0.1 – 2.0% or from 0.025 to 0.50%. In specimens given prior nonisothermal heating to 1500°C the cristobalite content is from 32 – 34% (specimens without additive) to 88 and 96% (specimens with 1 and 2% additive). Specimen maximum thermal expansion corresponding to transition of low-temperature into high-temperature cristobalite occurs within a limited range of 150 – 300°C.

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Yu. Pivinskii

OOO NVF Kerambet-Ogneupor

编辑信件的主要联系方式.
Email: pivinskiy@mail.ru
俄罗斯联邦, St. Petersburg

P. Dyakin

FGBOU VPO St. Petersburg State Technological University (Technical University)

Email: pivinskiy@mail.ru
俄罗斯联邦, St. Petersburg

A. Kolobov

OAO Dinur

Email: pivinskiy@mail.ru
俄罗斯联邦, Pervoural’sk, Sverdlovsk Region

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