SBIR Phase I: Low Temperature Joining of Alumina Structural Ceramics

这个小型企业创新研究(SBIR)第一阶段项目将开发一种用于结构氧化铝的低温连接化合物。该浆料将依靠氧化铝陶瓷材料的低熔点，有效地润湿连接表面和氧化铝填料，从而形成与连接陶瓷相似的致密连接。该计划将研究三种不同的填充糊剂制剂：a)溶解的加工糊剂，b)悬浮前体糊剂，以及c)前体盐与较低熔点糊剂的混合物。这项技术将使从简单的几何氧化铝块生产复杂的氧化铝结构成为可能，这些氧化铝块之前已经致密。这一领域的创新将使复杂结构陶瓷的实现在生产中更具成本效益。这种浆料会分解成氧化铝，并在低于氧化铝烧结所需的温度下致密。该项目所开发的技术将在结构陶瓷市场得到广泛应用。需要低温连接技术来增加结构的复杂性，这些结构可以从这些材料经济地生产出来。

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.