| 翻訳と辞書 |
| 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.
|
|