Untersuchungen in system Zirkonium-Sauerstoff teil 2 untersuchungen zur kinetik der reaktion zwischen Zirkonium und sauerstoff, sowie über die konstitution des systems Zirkonium-Sauerstoff☆
Untersuchungen in system Zirkonium-Sauerstoff teil 2 untersuchungen zur kinetik der reaktion zwischen Zirkonium und sauerstoff, sowie über die konstitution des systems Zirkonium-Sauerstoff☆
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锆-Sauerstoff 系统中的Untersuchungen
DOI：
10.1016/0022-3115(61)90075-7
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发表时间：
1961
影响因子：
3.1
通讯作者：
W. Dürrschnabel
中科院分区：
文献类型：
--
作者：
E. Gebhardt;H. Seghezzi;W. Dürrschnabel
通过金相研究和电阻率测量，确定了Zr- ZrO/sub //体系的组成。反应器级锆导线在1.5 × 10/sup -3/ mm汞压力和温度范围为1600 - 2030℃的条件下等温等压加载氧气。在这些条件下，在氧气加载的所有阶段，整个导线截面上都存在均匀的氧气浓度。根据目前的研究，相图在某些细节上与以前的图有所不同。这些偏差是指氧在α锆中的溶解度，α锆和β锆之间两相区域的圈定，以及Zr在ZrO/sub 2/中的溶解度。Zr在ZrO/sub - 2/中的溶解度极限形式表明存在一种稳定在1850℃以上的ZrO/sub - 2/高温形态，这种高温形态不能通过淬火而保留，因此没有进一步研究。了解氧化物的总发射率和电阻率对于调整试样的温度是很重要的。确定了这些量的近似值。(认证)
The constitution of the Zr- ZrO/sub 2// system was established by means of metallographic investigation and resistivity measurements. Wires of reactor grade zirconium were isothermally and isobarically loaded with oxygen at a pressure of 1.5 x 10/sup -3/ mm of mercury and at temperatures in the range l600- 2030 deg K. Under these conditions, a uniform oxygen concentration existed throughout the wire cross section at all stages of oxygen loading. According to the present investigation, the phase diagram differs in some particulars from earlier diagrams. These deviations refer to the solubility of oxygen in alpha zirconium, the delineation of the two phase region between alpha and BETA zirconium, and the solubility of Zr in ZrO/sub 2/. The form of the solubility limit of Zr in ZrO/sub 2/ suggests the existence of a high temperature form of ZrO/sub 2/ stable above 1850 deg K. This high temperature form could not be retained by quenching and was therefore not investigated further. A knowledge of the total emissivity and the resistivity of the oxide was of importance for adjusting the temperature of the specimens. Approximate values of these quantities were determined. (auth)