Reichmann Thomas L, Ipser Herbert
Department of Inorganic Chemistry (Materials Chemistry), University of Vienna, 1090 Wien, Austria.
J Alloys Compd. 2014 Dec 25;617:292-301. doi: 10.1016/j.jallcom.2014.07.211.
The complete Cd-Gd equilibrium phase diagram was investigated by a combination of powder-XRD, SEM and DTA. All previously reported phases, i.e., CdGd, CdGd, CdGd, CdGd, CdGd, and CdGd, could be confirmed. In addition, a new intermetallic compound with a stoichiometric composition corresponding to "CdGd" was found to exist. It was obtained that "CdGd" decomposes peritectically at 465 °C. Homogeneity ranges of all intermetallic compounds were determined at distinct temperatures. In addition, the maximum solubilities of Cd in the low- and high-temperature modifications of Gd were determined precisely as 4.6 and 22.6 at.%, respectively. All invariant reaction temperatures (with the exception of the formation of CdGd) as well as liquidus temperatures were determined, most probably, CdGd is formed in a peritectoid reaction from CdGd and CdGd at a temperature below 700 °C.
通过粉末X射线衍射（powder-XRD）、扫描电子显微镜（SEM）和差示热分析（DTA）相结合的方法，研究了完整的镉-钆平衡相图。所有先前报道的相，即CdGd、CdGd、CdGd、CdGd、CdGd和CdGd，均可得到证实。此外，还发现存在一种化学计量组成对应于“CdGd”的新型金属间化合物。结果表明，“CdGd”在465℃发生包晶分解。测定了所有金属间化合物在不同温度下的均匀范围。此外，精确测定了镉在钆的低温和高温变体中的最大溶解度分别为4.6和22.6原子百分比。确定了所有不变反应温度（CdGd形成除外）以及液相线温度，很可能，CdGd是在低于700℃的温度下由CdGd和CdGd通过包析反应形成的。
