SBIR Phase I: Low Temperature Joining of Alumina Structural Ceramics

这个小企业创新研究（SBIR）一期项目将开发一种用于结构氧化铝的低温连接化合物。膏体将依靠氧化铝预陶瓷材料的低熔点来有效润湿连接面和氧化铝填料，从而形成具有与连接陶瓷相似特征的致密连接。该计划将研究三种不同的填充浆料制剂：a)溶解的处理浆料，b)悬浮的前体浆料，c)熔点较低的前体盐混合物浆料。这项技术将使从简单的几何氧化铝片生产复杂的氧化铝结构成为可能，这些氧化铝片以前已被致密化。这一领域的创新将使复杂结构陶瓷在生产中更具成本效益。浆料将分解成氧化铝，并在比烧结氧化铝所需的温度更低的温度下致密化。本项目所开发的技术将在结构陶瓷市场上得到广泛应用。低温连接技术需要增加结构的复杂性，可以经济地从这些材料生产。

This Small Business Innovation Research (SBIR) Phase I project will develop a low temperature joining compound for structural alumina. The paste will rely on the low melting point of alumina preceramic materials to effectively wet the joining surfaces and alumina filler, thus forming a dense joint with characteristics similar to the joined ceramics. The program will investigate three different filled paste preparations: a) a dissolved processor paste, b) a suspended precursor paste, and c) a precursor salt mix with a lowered melting point paste. This technology will make possible the production of complex alumina structures from simple geometric alumina pieces, which have been previously densified. Innovations in this area will make the realization of complicated structural ceramics more cost effective in production. The paste will decompose to alumina, and will be densified at temperatures lower than that needed to sinter alumina. The technology to be developed under this project will find wide application in the structural ceramics market. Low temperature joining technologies are needed to increase the complexity of structures that can be economically produced from these materials.