THERMOCHEMICAL INVESTIGATIONS IN THE SYSTEM V/NB/O .2. CHEMICAL-TRANSPORT IN THE REGION V2O5/NB2O5/VO2/NBO2

被引：6

作者：

FECHTER, S ^{[1
]}

KRUGER, S ^{[1
]}

OPPERMANN, H ^{[1
]}

机构：

[1] TECH UNIV DRESDEN,INST ANORGAN CHEM,MOMMSENSTR 13,O-8027 DRESDEN,GERMANY

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 1993年 / 619卷 / 02期

关键词：

VANADIUM NIOBIUM OXIDE; CHEMICAL TRANSPORT; PHASE DIAGRAMS;

D O I：

10.1002/zaac.19936190231

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Transport experiments were used to support the phase relationships of the V2O5/Nb2O5/VO2/NbO2 system, which were established by annealing experiments of powder mixtures. The phase relations were studied in the NbO2-rich region of the system by means of X-ray and ESMA methods. The NbO2-rich section is characterized by the following two phase and three phase regions: Two phase region: V3Nb9O29/rutile mixed crystal V1-xNbxO2 Two phase region: BI-mixed crystal/VxNb1-xO2 Three phase region: V3Nb9O29/solubility limit LG1 (V1-xNbxO2)/BI-mixed crystal Three phase region: solubility limit LG1 (V1-xNbxO2)/BI-mixed crystal/solubility limit LG2 (VxNb1-xO2). The composition of the solubility limits LG1 and LG2 was ascertained by means of ESMA-investigation: LG1: 57.5 +/- 5 mol% NbO2/43.5 +/- 5 mol% VO2 LG2: 22.5 +/- 5 mol% NbO2/78.5 +/- 5 mol% VO2.

引用

页码：424 / 432

页数：9

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