PHASE-DIAGRAM OF BI UP TO 140 KBARS
PHASE-DIAGRAM OF BI UP TO 140 KBARS
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DOI：
10.1016/0022-3697(75)90199-7
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发表时间：
1975-01-01
影响因子：
4
通讯作者：
HOMAN, CG
中科院分区：
文献类型：
--
作者：
HOMAN, CG
在30~300°K至140kbar压力范围内，用电阻技术研究了铋的相图。利用原始的Bridgman相标记法，观察到了I-II、II-III、I-III、III-IV和V-VI相变。在这个区域观察到了两个新的阶段，分别命名为VIII和IX。I-II-III在29.5kbar-160K附近，IV-V-在55kbar和240K之间，V-VI-在72kbar和255°K之间，VI--IX在135kbar和250°K之间的三个点，以前的测量结果被调整到1970年的Drickamer压力表，并与现在的结果进行了比较。提出了压力为140kbar时的相图。在I-II-III，IV-V-VIII和V-VI-VIII三点附近，利用Bridgman测量的I-II，IV-V和V-VI相变的体积变化，计算了相变的体积变化和相变潜热。利用Bridgman的体积数据计算了与III-IV相变相关的潜热，其值小于2卡/−。
The phase diagram of Bi has been studied by resistometric techniques in the temperature range of 30 to 300°K up to pressures of 140 kbars. Using the original Bridgman phase notation, the phase transitions I–II, II–III, I–III, III–IV and V–VI were observed. Two new phases, designated VIII and IX were observed in this region. The triple points occurring between I–II–III near 29.5 kbars and 160°K, between IV–V–VIII near 55 kbars and 240°K, between V–VI–VIII near 72 kbars and 255°K and between VI–VIII–IX near 135 kbars and 250°K. Earlier measurements were adjusted to the 1970 Drickamer pressure scale and compared to the present results. A phase diagram is proposed for pressures to 140 kbars. Calculations of the volume changes and latent heats of transformation are made near the triple points I–II–III, IV–V–VIII and V–VI–VIII using the measured volume changes of Bridgman for the I–II, IV–V and V–VI transitions. The latent heat associated with the III–IV transition was calculated using the volume data of Bridgman to be less than − 2 cal/mol.