NSF-AFOSR Joint Workshop on Future Ultra-High Temperature Materials; Arlington, VA

美国国家科学基金会将于2004年1月13日至14日举办一次关于超高温材料(UHTM)的研讨会；UHTM的定义是使用温度超过1800摄氏度的材料。这包括过渡金属的碳化物和硼化物，如ZrB2、HFC和TaC。这些材料中强烈的共价键提供了非同寻常的强度、在氧化气氛中的稳定性和抗热震性的组合，但这也使它们难以加工。讲习班论坛将就以下问题进行互动深入的信息交流：目前超高热能机械用户未得到满足的需求、改进超高热电阻机的实验方法和新材料，以及涉及超高热电阻机职业的科学家和工程师的教育和培训问题。参与者将来自广泛的不同领域，包括来自美国和海外的政府、行业和大学研究实验室。研讨会的主要成果将通过密苏里大学罗拉分校(UMR)致力于超高温陶瓷的网页发布在一份报告中。报告定稿后，将在技术会议上提供，以摘要形式提交给《美国陶瓷学会公报》和《材料研究学会公报》等技术出版物，并通过向UHTM社区的同事发送信函进行宣传。%拟议研讨会的讨论将包括对实验方法的批判性评估，这些方法有可能导致更基本的理解，并确定性能更好的新材料。来自行业、政府和大学的联合投入将使UHTM研究社区的广泛基础能够设计和促进满足未得到满足的需求的计划，并为该领域的未来科学家和工程师的培训量身定制教育计划。

A Workshop will be held at NSF January 13-14, 2004 on ultra-high temperature materials (UHTMs); UHTMs are defined as materials that have use temperatures in excess of 1800C. This includes carbides and borides of transition metals such as ZrB2, HfC, and TaC. The strong covalent bonding in these materials provides unusual combinations of strength, stability in oxidizing atmospheres, and resistance to thermal shock, but this also makes them difficult to process. The Workshop forum will provide for interactive in-depth exchange of information on unmet needs of current users of UHTMs, experimental approaches and new materials for improved UHTMs, and issues related to education and training of scientists and engineers for careers that involve UHTMs. Participants will be from a broad cross section including government, industry, and university research laboratories from the U.S. and abroad. The major workshop outcomes are to be documented in a report disseminated through a web page devoted to ultra-high temperature ceramics at the University of Missouri-Rolla (UMR). When finalized, the report will be available at technical meetings, submitted for publication in synopsis form to technical publications such as the Bulletin of the American Ceramic Society and the Materials Research Society Bulletin, and promoted through a letter sent to colleagues in the UHTM community. %%%Discussions at the proposed workshop will include a critical evaluation of experimental approaches that have potential to lead to greater fundamental understanding, and to identify new materials with improved performance. The combined input from industry, government, and universities will allow a broad base of the UHTM research community to design and promote programs that satisfy unmet needs and to tailor education programs for training of future scientists and engineers in this field.***