论文标题
$ zr_ {2} alc $最大阶段陶瓷与氧气贫困，静态液体铅孔eutectic的兼容性
Compatibility of $Zr_{2}AlC$ MAX phase-based ceramics with oxygen-poor, static liquid lead-bismuth eutectic
论文作者
论文摘要
这项工作调查了$ zr_ {2} alc $最大阶段陶瓷与液体lbe的兼容性，并提出了一种解释观察到的局部$ zr_ {2} alc $/lbe相互作用的机制。这些陶瓷暴露于氧气（$ c_ {o} \ le2.2 \ cdot10^{ - 10} $ mass％），在500°C下静态液体lbe 1000 h。一个新的$ zr_ {2}（al，bi，pb）c $最大相位固体解决方案在受LBE影响的$ zr_ {2} alc $ grains中形成位于原位。平面外排序在新的实心解决方案中是有利的，在这种新的固定解决方案中，$ \ textit {a} $ - 晶体结构中具有高和低bi/pb内容的层，与第一原则计算一致。通过反应性热按压来合成大量$ zr_ {2}（al，bi，pb）c $，以研究中子衍射的固体溶液的晶体结构。
This work investigates the compatibility of $Zr_{2}AlC$ MAX phase-based ceramics with liquid LBE, and proposes a mechanism to explain the observed local $Zr_{2}AlC$/LBE interaction. The ceramics were exposed to oxygen-poor ($C_{O}\le2.2 \cdot10^{-10}$ mass%), static liquid LBE at 500°C for 1000 h. A new $Zr_{2}(Al,Bi,Pb)C$ MAX phase solid solution formed in-situ in the LBE-affected $Zr_{2}AlC$ grains. Out-of-plane ordering was favorable in the new solid solution, whereby $\textit{A}$-layers with high and low-Bi/Pb contents alternated in the crystal structure, in agreement with first-principles calculations. Bulk $Zr_{2}(Al,Bi,Pb)C$ was synthesized by reactive hot pressing to study the crystal structure of the solid solution by neutron diffraction.
