Investigation of plastic deformation mechanisms and microstructural characteristics of transition metal carbonitrides, Zr(C,N) and Ti(C,N) hard coatings

过渡金属碳氮化物、Zr(C,N)和Ti(C,N)硬质涂层的塑性变形机制和微观结构特征研究

• 批准号: 496845180
• 负责人: Dr.-Ing. Idriss El Azhari
• 金额: --
• 依托单位: Lehrstuhl für Experimentelle Methodik der Werkstoffwissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/496845180?language=en
• 关键词: Investigation; plastic; deformation; mechanisms; microstructural

Transition metal carbides, nitrides and carbonitrides of the periodic table groups 4, 5 and 6 possess a unique combination of ceramic and metal-like properties which permits the use in a wide range of cutting-edge technological applications. Ti(C,N) is one of the most used thin coatings. Recently, Zr(C,N) has received an increasing focus and attention due to its promising properties that would even outplay the Ti(C,N). Nevertheless, literature about their corresponding mechanical properties and deformation mechanisms are very scarce. Regarding plasticity, corresponding data and information are not available for these carbonitrides. The present proposal is an in-depth investigation plan of mechanical properties and plastic deformation of Ti(C,N) and Zr(C,N). Plasticity of single crystals will be investigated by micro-pillar compression and high-resolution microscopy characterization to understand fundamentally which are the plastic deformation mechanisms occurring. Afterwards, the investigation is scaled up to study the impact of the polycrystalline microstructure features and how they could be tailored to enhance the toughness of the related polycrystalline CVD hard coating.

元素周期表第 4、5 和 6 族的过渡金属碳化物、氮化物和碳氮化物具有陶瓷和类金属特性的独特组合，可用于广泛的尖端技术应用。 Ti(C,N) 是最常用的薄涂层之一。近年来，Zr(C,N)因其具有甚至超越Ti(C,N)的良好性能而受到越来越多的关注和关注。然而，有关其相应的力学性能和变形机制的文献却很少。关于可塑性，这些碳氮化物没有相应的数据和信息。本提案是对Ti(C,N)和Zr(C,N)的机械性能和塑性变形的深入研究计划。将通过微柱压缩和高分辨率显微镜表征来研究单晶的塑性，以从根本上了解发生的塑性变形机制。随后，研究规模扩大，以研究多晶微观结构特征的影响以及如何调整它们以增强相关多晶 CVD 硬质涂层的韧性。