Improvement in Mechanical Properties of Ceramics by Introducing Metal Colloids/Precipitates - A Novel Concept

通过引入金属胶体/沉淀物来改善陶瓷的机械性能 - 一个新概念

• 批准号: 9224589
• 负责人: Jagannadham Kasichainula
• 金额: $ 5万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9224589&HistoricalAwards=false
• 关键词: Improvement; Mechanical; Properties; Ceramics; Introducing

The novel concept offered in this proposal was to introduce metal colloids/precipitates in the ceramics, and to enhance the toughness and ductility properties of the ceramics. Precipitate sizes and their number density are to be optimized in the synthesis and processing part of this proposed work. Detailed material characterization and modeling of toughness and ductility are to be used to correlate microstructures with the mechanical properties of the ceramics. This proposal intends to investigate the cases of metal colloids/precipitates in MgO or Al2O3 ceramics. Metals can be transition metals such as Ni. %%% This project investigates metal colloids/precipitates in MgO or Al2O3 ceramics. It offers the metal colloids/precipitates as infinite sources of dislocations, which contribute to the improvements in toughness as well as to ductility. If provides great potentials in expanding the possible applications of ceramics as structural elements. Potential benefits to the industrial usage of ceramics can be very substantial.

本文提出的新概念是在陶瓷中引入金属胶体/沉淀物，以提高陶瓷的韧性和延展性。在本工作的合成和加工部分，对沉淀粒度及其数目密度进行优化。详细的材料表征和韧性和延展性建模将用于将微观结构与陶瓷的机械性能联系起来。本文旨在研究MgO或Al2O3陶瓷中金属胶体/沉淀的情况。金属可以是过渡金属，如Ni。该项目研究MgO或Al2O3陶瓷中的金属胶体/沉淀物。它提供了金属胶体/沉淀作为位错的无限来源，这有助于提高韧性和延展性。它为扩大陶瓷作为结构元件的可能应用提供了巨大的潜力。陶瓷工业应用的潜在效益是非常可观的。