Phase relations of michenerite and merenskyite in the Pd-Bi-Te system
Phase relations of michenerite and merenskyite in the Pd-Bi-Te system
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Pd-Bi-Te 体系中云云石和镁仑石的相关系
DOI：
10.2113/gsecongeo.71.7.1461
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发表时间：
1976
期刊：
影响因子：
5.8
通讯作者：
W. Maclean
中科院分区：
文献类型：
--
作者：
E. L. Hoffman;W. Maclean
michenerite和merenskyite的稳定场在450℃以上已经确定，michenerite通过Bi和Te取代Pd（低于0.99）Bi（低于0.79）Te（低于1.22）到Pd（低于0.95）Bi（低于1.11）Te（低于0.94）形成一个广泛而狭窄的固溶体场；钯的原子率在31.5%到33.2%之间。富bi端在489°+或- 3°C时不均匀熔化，富te端在501°+或- 3°C时熔化为富bi的kotulskite和液体。汞辉石形成的固溶体场比微米辉石更广泛，从PdTe 2到Pd（低于1.05）Te（低于1.34）Bi（低于0.61）不等。取代主要是Bi代替Te，其次是Bi和Te代替Pd。沸石与碲、碲辉钼矿结合时，其化学计量公式为Pd(Te,Bi) 2，与辉钼矿和辉钼矿结合时，其化学计量公式为富Pd。在575°+或- 10°C至710°+或- 10°C的范围内，钙钛矿与钙钛矿之间存在完全的固溶体。随着温度的升高，钙钛矿向PdTe 2退回，PdTe 2在740°+或- 3°C时熔化。
The stability fields of michenerite and merenskyite have been defined above about 450 degrees C. Michenerite forms an extensive but narrow solid-solution field by substitution between Bi and Te from Pd (sub 0.99) Bi (sub 0.79) Te (sub 1.22) to Pd (sub 0.95) Bi (sub 1.11) Te (sub 0.94) ; Pd ranges from 31.5 to 33.2 atomic percent. The Bi-rich end of michenerite melts incongruently at 489 degrees + or - 3 degrees C, and the Te-rich end melts at 501 degrees + or - 3 degrees C to Bi-rich kotulskite and liquid.Merenskyite forms a more extensive solid-solution field than michenerite and varies from PdTe 2 to Pd (sub 1.05) Te (sub 1.34) Bi (sub 0.61) . Substitution is mainly of Bi for Te and subordinately of Bi and Te for Pd. Merenskyite has the stoichiometric formula of Pd(Te,Bi) 2 when associated with Te and tellurobismuthite but becomes Pd-rich when associated with wehrlite and michenerite. A complete solid solution exists between merenskyite and kotulskite from 575 degrees + or - 10 degrees to 710 degrees + or - 10 degrees C. With rising temperature merenskyite retreats toward PdTe 2 , which melts at 740 degrees + or - 3 degrees C.