Thermal Expansion of Copper and Nickel Sulfides and their Alloys
| Autor: | R. I. Gulyaeva, Evgeny N. Selivanov, O.V. Nechvoglod |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Radiation Nickel sulfide Materials science Sulfide Metallurgy chemistry.chemical_element Condensed Matter Physics Copper Thermal expansion law.invention chemistry.chemical_compound Nickel Copper sulfide chemistry law General Materials Science Dilatometer Crystallization |
| Zdroj: | Defect and Diffusion Forum. :55-59 |
| ISSN: | 1662-9507 |
| DOI: | 10.4028/www.scientific.net/ddf.334-335.55 |
| Popis: | Thermal expansion coefficients of metal sulfides and their alloys are important for technological processes calculations of sulfide processing materials, for example, the crystallization equipment of nickel and copper-nickel converter matte. The synthesized copper and nickel monosulfide, and nickel and copper-nickel matte have been used as the initial samples. Dilatometric analysis was carried out by dilatometer (Linseis L78 RITA). Differences in the values measured are accounted for by the synthesis samples facilities, the coexistence of several non-stoichiometric sulfide phases and interaction during heating. In the temperature 20-500°C range the coefficients of thermal expansion (α) for the sulfides of copper, nickel and their alloys are changed from 10.4 to 20.610-6 1/K. Changes in the value α are accounted for by phase transitions in sulfide samples at their heating. Considering the properties of the phase components are an additive it is shown the thermal expansion coefficient complex sulfide-metal alloys is possible to calculate. |
| Databáze: | OpenAIRE |
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