Title: | Reactive sintering of $MnZn$ ferrites |
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Authors: | ID Kosmač, Tomaž (Author) ID Drofenik, Mihael (Author) |
Files: | Acta_Chimica_Slovenica_2001_Kosmac,_Drofenik_Reactive_sintering_of_MnZn_ferrites.pdf (441,54 KB) MD5: C60A0520179D69DE7F057999A3479F06
http://acta-arhiv.chem-soc.si/48/48-1-101.pdf
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Language: | English |
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Work type: | Scientific work |
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Typology: | 1.01 - Original Scientific Article |
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Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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Abstract: | Reaction-formed $MnZn$ ferrite was prepared and the decrease in shrinkage after sintering due to the volume expansion accompanying iron oxidation was studied.
Green compacts consisting of the milled raw oxides $Fe_2O_3$, $Mn_3O_4$, $ZnO$ and metallic iron powder were sintered at 1350 °C in air. During the first hold at 800 °C, $Fe$ was oxidized to $\alpha-Fe_2O_3$ and $Zn$ ferrite was formed. Above 1300 °C the reaction bonding was completed and $MnZn$ ferrite, exhibiting a relatively low shrinkage, was formed. The chemical reactions involved during reaction bonding were associated with a volume expansion and porosity formation, compensating for the shrinkage on sintering. Intensive milling decreases the porosity after sintering but induces the oxidation of iron, and partially removes the shrinkage compensation caused by the presence of metallic iron. |
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Keywords: | reaction-forming, $MnZn$ ferrite, inorganic technology, ferrite ceramics, reaction bonded ceramics, sintering, iron oxides, iron |
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Publication status: | Published |
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Publication version: | Version of Record |
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Year of publishing: | 2001 |
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Number of pages: | str. 101-114 |
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Numbering: | Letn. 48, št. 1 |
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PID: | 20.500.12556/DKUM-58173  |
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ISSN: | 1318-0207 |
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UDC: | 66.046.44:666.593 |
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ISSN on article: | 1318-0207 |
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COBISS.SI-ID: | 23500037  |
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NUK URN: | URN:SI:UM:DK:ZCYW9T54 |
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Publication date in DKUM: | 25.08.2017 |
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Views: | 1182 |
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Downloads: | 112 |
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Metadata: |  |
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Categories: | Misc.
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