| Reference Type | Journal (article/letter/editorial) |
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| Title | Sintering and crystal growth of magnesia in the presence of lime and forsterite |
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| Journal | Mineralogical Magazine |
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| Authors | Spencer, D. R. F. | Author |
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| Coleman, D. S. | Author |
| Year | 1970 (September) | Volume | 37 |
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| Issue | 291 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_37/37-291-839.pdf+ |
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| DOI | doi:10.1180/minmag.1970.037.291.09Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6389 | Long-form Identifier | mindat:1:5:6389:4 |
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| GUID | 0 |
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| Full Reference | Spencer, D. R. F., Coleman, D. S. (1970) Sintering and crystal growth of magnesia in the presence of lime and forsterite. Mineralogical Magazine, 37 (291) 839-851 doi:10.1180/minmag.1970.037.291.09 |
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| Plain Text | Spencer, D. R. F., Coleman, D. S. (1970) Sintering and crystal growth of magnesia in the presence of lime and forsterite. Mineralogical Magazine, 37 (291) 839-851 doi:10.1180/minmag.1970.037.291.09 |
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| In | (1970, September) Mineralogical Magazine Vol. 37 (291) Mineralogical Society |
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| Abstract/Notes | SummaryThe densification of pure magnesia was examined along with mixtures containing 0·5 and 1·0 mol % of calcium oxide and forsterite. The sintering behaviour at temperatures between 1400 and 1800 °C was studied and measurements made of changes in shrinkage, porosity, bulk density, and grain size for sintering times of up to 8 h at sintering temperature. It was found that both the 0·5 and 1·0 mol % additions enhanced the sintering of pure magnesia in the temperature range 1500–1700 °C Increased grain growth was found for mixtures containing forsterite but little change occurred for mixtures containing lime. Examination of the grain growth data showed that the mixtures obeyed a relationship: Time at temperature × Constant = (grain size)n, where n = 2 for the grain growth of pure magnesia and mixtures containing lime, but n = 3 for mixtures of magnesia with additions of a silicate such as forsterite. A value of 78 kcal/mole was obtained for the grain growth of pure magnesia, which agrees with other researches.The extent of the solubility of lime in periclase for each lime-magnesia mixture at each temperature was also examined using electron probe analysis and related to the sintering behaviour observed for these mixtures. |
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