書誌事項
- タイトル別名
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- Thermal Stabilities of SrO2FeO8Fe2O3(SrW) and SrOFeO7Fe2O3(SrX) Hexa-Ferrites.
- SrO 2 FeO 8 Fe2O3 SrW SrO FeO 7 Fe2O3 S
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説明
Equilibrium experiments were performed to determine thermally stable ranges of SrO⋅2FeO⋅8Fe2O3(SrW) and SrO⋅FeO⋅7Fe2O3(SrX) compounds under various oxygen partial pressures. The existence of SrO⋅eO⋅7Fe2O3(SrX) compound was first verified in the present work.<BR>Upper limits of the stability ranges for SrW and SrX compounds determined by XRD were found to be expressed as follows:<BR>1) SrW compound<BR>SrW=Magnetite+Liq.+O2<BR>RTlnPo2=-227×103+128.5T (cal/mol O2)<BR>2) SrX compound<BR>SrX=SrW+Liq.+O2<BR>RTlnPo2=-214.5×103+122.5T (cal/mol O2), <BR>where Po2 is the oxygen partial pressure in atm unit, T is temperature in °C unit, and R is 1.9872 cal/(mol⋅K).<BR>Ferrous contents of SrW and SrX compounds increased with increasing temperature and with decreasing oxygen partial pressure. No significant changes in saturation magnetization were observed with variation of ferrous contents of SrW and SrX compounds.
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 39 (10), 922-928, 1992
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390282681281446912
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- NII論文ID
- 130000818012
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 3795405
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
