Phase Equilibria in the Bi2O3-CuO-Nb2O5 Ternary System

来源 :The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会) | 被引量 : 0次 | 上传用户：qidezhong

【摘要】

：

　　A complete subsolidus ternary phase diagram of the Bi2O3-CuO-Nb2O5(BCN)system was constructed.Careful firing control and phase analysis were applied to dete

【作者】

：

KarBanTan[1]MunPingChon[1]ChwinChiehKhaw[2]ZulkarnainZainal[1]YunHinTaufiq-Yap[1]

【机构】

：

Chemistry Department,Faculty of Science,Universiti Putra Malaysia,Serdang,Selangor,Malaysia

【出处】

：

The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)

【发表日期】

：

2014年期

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　　A complete subsolidus ternary phase diagram of the Bi2O3-CuO-Nb2O5(BCN)system was constructed.Careful firing control and phase analysis were applied to determine the phase assemblages and compatibilities over a wide range of temperatures,i.e.700℃-925℃.Phase-pure BCN pyrochlores were found to crystallise in cubic symmetry,space group Fd3m,No.227 with lattice constants in the range of 10.4855(5)< x < 10.5321(3).The mechanism of this limited subsolidus series could be represented by a general formula,Bi3.08-xCu1.84+2x/9Nb3.08+7x/9O14.16+6x/9(0 ≤ x ≤ 0.36)wherein the reduction of Bi content was compensated by a proportion amount of copper and niobium together with non-stoichiometry in oxygen.

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Phase Equilibria in the Bi2O3-CuO-Nb2O5 Ternary System

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