SBIR Phase I: Ceramic Cutting Tool for Titanium-Alloy Machining

这个小企业创新研究（SBIR）第一期项目将开发一种用于加工钛合金的新型陶瓷刀具材料。在防止当前碳化钨工具中的碳溶解到钛中的新涂层方面，只取得了有限的成功。第一阶段将开发一种基于钇铝石榴石（YAG）的新型陶瓷复合刀具，其机械性能与氧化铝相似，与钛的化学相容性更强。本研究将对钛基增强YAG复合材料进行初始热力学相相容性分析，进行YAG基复合材料加工实验，表征陶瓷-钛界面发生的反应，并评估关键力学性能。钛合金广泛应用于航空航天工业，是最难加工的工件之一。它们的高反应性限制了最先进陶瓷工具的使用。一种新型的yag基陶瓷复合刀具可以通过提高加工速度和缩短生产时间来降低钛合金产品的成本。

9860390 This Small Business Innovation Research (SBIR) Phase I project will develop a new ceramic cutting tool material for machining titanium alloys. Only limited success has been achieved by new coatings to prevent dissolution of carbon from current tungsten carbide tools into titanium. Phase I will develop a new class of ceramic-composite cutting tools based on yttrium-aluminum garnet (YAG), whose mechanical properties are similar to those of alumina and which are more compatible chemically with titanium. The research will make an initial thermodynamic phase compatibility analysis of reinforced YAG composites with titanium, experiment with YAG-based composite processing, characterize reactions occurring at the ceramic-titanium interface, and evaluate key mechanical properties. Titanium alloys, widely used in the aerospace industry, are one of the most difficult workpieces to machine. Their high reactivity limits the use of state-of-the-art ceramic tools. A new YAG-based, ceramic-composite cutting tool could reduce the costs of titanium alloy products by increasing machining rates and reducing production time.