Mechanical properties of YM3B phases: The effect of 4d shell population on the elastic properties of YM3B thin films ( M = Zr, Mo, Rh, and Ag)

YM3B 相的机械性能：4d 壳层布居对 YM3B 薄膜弹性性能的影响（M = Zr、Mo、Rh 和 Ag）

• 批准号: 19534468
• 负责人: Professor Jochen M. Schneider, Ph.D.
• 金额: --
• 依托单位: Lehrstuhl für Werkstoffchemie (MCh)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/19534468?language=en
• 关键词: Mechanical; properties; YM3B; phases; effect

RM3B phases, where R is a rare earth element and M designates a transition metal, can be described as nanolaminates with M - R layers stacked on M - B layers. While the transport properties of RRh3B phases have been reported in literature, many basic materials science questions with respect to the synthesis-structureproperty relationship of RM3B compounds remain unanswered. One such experimentally unexplored question is the dependence of the elastic and plastic properties on the 4d shell population of M elements in RM3B phases. The YM3B system was selected because of the fascinating elastic properties which can be expected based on our recently published ab initio calculations [Music et a/., Phys. Rev. B 71, 052104 (2005)]. Our strategy is, once suitable growth conditions for these materials are identified and optimized, to correlate the mechanical properties measured by nanoindentation with the information gained through structure, chemistry, and bonding characterization for four valence electron configurations. Through correlation with our already published ab initio data we expect to contribute towards a better basic understanding of these materials.

RM3B相，其中R是稀土元素，M是过渡金属，可以描述为纳米层状结构，M-R层堆积在M-B层上。虽然RRh3B相的输运性质已经在文献中得到了报道，但关于RM3B化合物的合成-结构-性质关系的许多基本材料科学问题仍然没有得到回答。RM3B相中M元素的4d壳层布居对弹性和塑性性能的依赖关系是一个未被实验探索的问题。YM3B系统之所以被选中，是因为我们最近发表的从头计算[Music et a/.，Phys]具有令人着迷的弹性性质。修订本B 71,052104(2005年)]。我们的策略是，一旦确定和优化了这些材料的合适生长条件，就将通过纳米压痕测量的机械性能与通过结构、化学和四价电子组态的成键表征获得的信息相关联。通过与我们已经发表的从头算数据的关联，我们希望有助于更好地基本理解这些材料。