United Engineering Foundation Conference, "Structural Ceramics and Ceramic Composites for High Temperature Applications," Seville, Spain; October 7-12, 2001

联合工程基金会会议，“高温应用的结构陶瓷和陶瓷复合材料”，西班牙塞维利亚；

• 批准号: 0100739
• 负责人: Charles Freiman
• 金额: $ 0.5万
• 依托单位: United Engineering Trustees, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0100739&HistoricalAwards=false
• 关键词: United; Engineering; Foundation; Conference; Structural

Funding is granted to assist in holding a conference on "Structural Ceramics and Ceramic Composites for High Temperature Applications" in Seville, Spain, October 7-12, 2001, sponsored by the United Engineering Foundation. The conference will encompass five sequential sessions on Modeling of High Temperature Mechanical Properties, New Thinking about Silicon Nitride Deformation, New Developments in SiC-based Materials, New Developments in Oxide Materials, and Environmental Effects on Non-Oxide Structural Ceramics. Each of these sessions attempts to address areas that are both timely and that have not been the subject of recent conferences. The modeling session will focus on new microstructure-based models for deformation The session on silicon nitride will attempt to link recent work on internal friction to that of the recently developed non-traditional deformation models. The session on Environmental Effects will bring together experts interested in solving the recently recognized susceptibility of non-oxide ceramics to degradation in high-temperature, high-velocity, water-containing environments. This problem effectively blocks widespread adoption of nitrides and carbides in high-temperature engines, an area of research for more than 30 years. The session on new developments in SiC-based materials will have a large component on the new so-called "Eco-ceramics" and biomorphic ceramics--silicon carbides with microstructures either fabricated from or inspired by natural materials. The session on oxide ceramics is roughly equally divided between superplastic behavior and the deformation of directionally solidified eutectics. Although superplasticity has been around for quite some time as a topic in and of itself, it has resisted complete explanation. %%%Over the past thirty years outstanding efforts and resources have been devoted to research in ceramics, particularly for high-temperature structural applications such as turbine blades, heat exchangers, and diesel engine components. Improved fabrication procedures and novel materials have resulted, understanding of the properties-microstructure relationships has been achieved, and tentative models have been proposed, all leading to a better knowledge of the fundamentals and potential applications of ceramics in modern technology. Fracture, creep, slow-crack growth, and anelasticity are important mechanical properties at high-temperatures. These properties are strongly sensitive to environment (atmosphere, temperature, etc.) so understanding their interaction with the environment is particularly appropriate. Furthermore, it has also been six years since the previous United Engineering Foundation Conference on Plastic Deformation of Ceramics, held in Snowbird, Utah, in August of 1994. This conference united a number of researchers, and there has not been a similar conference since then.

该基金将于2001年10月7日至12日在西班牙塞维利亚召开“高温应用结构陶瓷和陶瓷复合材料”会议，由联合工程基金会赞助。会议将包括五个连续的会议，分别是高温力学性能建模，氮化硅变形的新思路，sic基材料的新发展，氧化物材料的新发展，以及非氧化物结构陶瓷的环境影响。每一届会议都试图讨论一些既及时又不是最近各次会议的主题的领域。建模部分将集中于新的基于微观结构的变形模型。关于氮化硅的部分将尝试将最近的内摩擦工作与最近开发的非传统变形模型联系起来。关于环境影响的会议将汇集有兴趣解决最近认识到的非氧化物陶瓷在高温，高速，含水环境中降解的易感性的专家。这个问题有效地阻碍了氮化物和碳化物在高温发动机中的广泛应用，这是一个研究了30多年的领域。关于碳化硅基材料新发展的会议将有很大一部分是关于新的所谓的“生态陶瓷”和生物形态陶瓷——由天然材料制成或受自然材料启发的微结构碳化硅。关于氧化物陶瓷的部分大致分为超塑性行为和定向凝固共晶的变形。虽然超塑性本身作为一个话题已经存在了很长一段时间，但它一直没有得到完整的解释。在过去的三十年里，陶瓷的研究投入了大量的精力和资源，特别是在涡轮叶片、热交换器和柴油发动机部件等高温结构应用方面。改进的制造工艺和新型材料已经产生，对性能-微观结构关系的理解已经实现，并提出了初步的模型，所有这些都导致了对陶瓷在现代技术中的基础和潜在应用的更好的了解。断裂、蠕变、慢裂纹扩展和非弹性是高温下重要的力学性能。这些特性对环境（大气、温度等）非常敏感，因此了解它们与环境的相互作用是特别合适的。此外，自1994年8月在犹他州雪鸟举行的陶瓷塑性变形联合工程基金会会议以来，也已经过去了六年。这次会议联合了许多研究人员，从那时起就没有再举行过类似的会议。