Acquisition of Elemental Analysis Equipment for Engineering Materials

9622213德国 该奖项支持购买两台用于分析工程材料中氧/氮和碳/硫含量的仪器。 这四种元素的存在会对工程材料的微观结构、机械性能、热性能和电子行为产生深远的影响，特别是当它们作为粉末使用时。 当处理粉末金属和陶瓷时，加工、烧结和烧结后的性能通常由原材料的表面化学控制。 已知诸如碳、氮、硫和氧的元素集中在颗粒表面。 因此，检测它们的存在并量化每种存在量的能力对于理解材料的最终性质至关重要。 该设备将为粉末加工的许多领域提供有价值的信息，包括：（1）烧结气氛对高性能合金机械性能的影响;（2）颗粒材料加工的粘合剂选择;（3）粉末化学对材料热行为的影响;（4）氧化物生长;和（5）基础微观结构研究。 该分析设备的收购将为这一先进的微观结构分析设施增加一个重要方面。 现在，显微组织和机械性能数据可以直接与合金化学相关联。 一旦数据库已经建立了这些信息，它将有可能设计具有非常具体的微观结构和性能的合金，而不必进入一个详细的实验矩阵;也就是说，可以开发一个专家系统，提供合金化学和加工参数，将产生一个材料与所需的性能在第一次实验。 目前，这样的制度并不存在。 ***

9622213 German This award supports the acquisition of two instruments which analyze oxygen/nitrogen and carbon/sulfur content in engineering materials. The presence of these four elements can have far-reaching effects on the microstructure, mechanical properties, thermal properties, and electronic behavior of engineering materials, especially when they are used as powders. When dealing with powdered metals and ceramics, the processing, sintering, and post-sintering properties are often controlled by the surface chemistry of the starting material. Elements such as carbon, nitrogen, sulfur, and oxygen are known to concentrate on particle surfaces. Thus, the ability to detect their presence and quantify the amount of each that is present is crucial to understanding the final properties of the material. This equipment will provide envaluable information on many areas of powder processing including: (1) The effect of sintering atmosphere on the mechanical properties of high performance alloys; (2) Binder selection for the processing of particulate materials; (3) The effect of powder chemistry on the thermal behavior of materials; (4) Oxide growth; and (5) Fundamental microstructural studies. %%% The acquisition of this analytical equipment will add an important facet to this advanced microstructural analysis facility. Now, the microstructural and mechanical property data can be directly linked with the alloy chemistry. Once a database has been established with this information, it will be possible to design alloys with very specific microstructures and properties without having to enter into a detailed experimental matrix; that is, an expert system can be developed that provides the alloy chemistry and processing parameters that will yield a material with the desired properties on the first experiment. Currently, such a system does not exist. ***