Influence of MgO on the phase equilibria in the Cu sub(x)O-FeO sub(y)-MgO-SiO sub(2) system in equilibrium with copper alloy - Part II: Results and discussion

Phase equilibria in the 'Cu sub(2)O'"Fe sub(2)O sub(3)'-MgO-SiO sub(2) system in equilibrium with copper alloy have been investigated at temperatures between 1075 and 1250[degrees]C. A high-temperature equilibration/quenching/electron probe micro-analysis technique has been used...

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Bibliographic Details
Published inInternational journal of materials research Vol. 106; no. 6; pp. 587 - 599
Main Authors Crivits, Tijl, Hayes, Peter C, Jak, Evgueni
Format Journal Article
LanguageEnglish
Published 01.01.2015
Subjects
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
COPPER OXIDE
CUPRITE
CUPROUS OXIDE
EQUILIBRIUM
Liquids
Liquidus
MAGNESIUM OXIDE
Olivine
Phase equilibria
PHASES
Pyroxenes
Quenching
QUENCHING MECHANISMS
SILICON DIOXIDE
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Summary:Phase equilibria in the 'Cu sub(2)O'"Fe sub(2)O sub(3)'-MgO-SiO sub(2) system in equilibrium with copper alloy have been investigated at temperatures between 1075 and 1250[degrees]C. A high-temperature equilibration/quenching/electron probe micro-analysis technique has been used to accurately determine the liquid and solid compositions. Results on phase equilibria in the pyroxene and olivine primary phase fields are reported, providing new data on the effect of MgO on the liquidus temperatures in these fields. It was found that increasing MgO concentrations increases the liquidus temperatures in the olivine and pyroxene primary phase fields. The cuprite-delafossite-tridymite-pyroxene eutectic temperature of the quaternary system was determined to be between 1075 and 1080 + or - 5[degrees]C.
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ISSN:1862-5282
DOI:10.3139/146.111234