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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Calcium aluminoferrite ： ウィキペディア英語版 Calcium aluminoferrite Calcium aluminoferrite (Ca2(Al,Fe)2O5) is a dark brown crystalline phase commonly found in cements. In the cement industry it is termed ferrite. It also exists in nature as the rare mineral brownmillerite. ==Properties of the pure phase== In the absence of elements other than calcium, aluminium, iron and oxygen, calcium aluminoferrite forms a solid solution series of formula Ca2(AlxFe1-x)2O5 for all values of x in the range 0-0.7.〔H F W Taylor, ''Cement Chemistry'', Academic Press, 1990, ISBN 0-12-683900-X, pp 28-32〕 Compositions with x > 0.7 do not exist at ordinary pressures (see dicalcium aluminate). The crystal is orthorhombic, and is normally lath-like. Its density varies from 4026 kg⋅m−3 (x = 0) to 3614 kg⋅m−3 (x = 0.7). All compositions melt incongruently in the range 1400−1450 °C. They are ferromagnetic, progressively more so as iron content increases. These phases are easily prepared from the oxides. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Calcium aluminoferrite」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.