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.

为协助举办由联合工程基金会主办的2001年10月7日至12日在西班牙塞维利亚举行的“高温应用的结构陶瓷和陶瓷复合材料”会议而提供的资金。会议将包括五个连续的会议，分别是高温机械性能建模、氮化硅变形的新思维、碳化硅材料的新发展、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既及时又不是最近会议主题的领域。建模会议将侧重于新的基于微观结构的变形模型。关于氮化硅的会议将尝试将最近关于内耗的工作与最近开发的非传统变形模型的工作联系起来。关于环境影响的会议将汇集专家们，他们对解决最近发现的非氧化物陶瓷在高温、高速、含水环境中易降解的问题感兴趣。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采用，这是一个研究了30多年的领域。关于碳化硅基材料的新发展的会议将有一个很大的组成部分，涉及所谓的新的“生态陶瓷”和生物形态陶瓷--具有微结构的碳化硅，其微结构由天然材料制成或受其启发。关于氧化物陶瓷的会议大致分为超塑性行为和定向凝固共晶的变形。尽管超塑性本身作为一个话题已经存在了相当长的一段时间，但它一直拒绝完全解释。在过去的三十年里，我们一直致力于陶瓷的研究，特别是用于涡轮叶片、热交换器和柴油发动机部件等高温结构应用的研究。改进了制备工艺和新的材料，了解了性能与微结构的关系，并提出了初步模型，所有这些都使人们更好地了解了陶瓷在现代技术中的基本原理和潜在应用。断裂、蠕变、裂纹缓慢扩展和滞弹性是高温下的重要力学性能。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上一届联合工程基金会陶瓷塑性变形会议以来，也已经过去了六年。这次会议联合了多名研究人员，此后再也没有过类似的会议。