High Pressure Synthesis of Hard and Superhard Materials

小行星9314020 这项工作涉及在高压（1吉帕斯卡至大于70吉帕斯卡）下合成的共价键合的硬/超硬材料的化学，但可以淬火到环境条件。 这些实验将使用金刚石砧室技术以及最近开发的高压下固体合成和表征方法进行。 在极端压力和/或温度下的合成将与硬质材料的形成和性能的详细原位观察相结合。 要解决的问题是金刚石和类金刚石材料的合成从新的聚碳炔网络骨架聚合物和新的硬质材料的合成中的碳-氮和硼-氧系统。 目标将是寻找新的硬质材料，潜在的性能上级或补充现有的，并获得有关晶体结构，化学成分和硬度之间的关系，这将有助于新的硬质材料的设计新的信息。 ***

9314020 Badding This work is concerned with the chemistry of covalently bonded hard/superhard materials that are synthesized at high pressure (1 gigapascals to greater than 70 gigapascals), but can be quenched to ambient conditions. These experiments will be performed using diamond-anvil cell techniques together with recently developed methods for the synthesis and characterization of solids at high pressures. Syntheses at extreme pressures and/or temperatures will be combined with detailed in situ observations of the formation and properties of hard materials. The topics to be addressed are the synthesis of diamond and diamond-like materials from novel polycarbyne network-backbone polymers and the synthesis of new hard materials in the carbon-nitrogen and boron-oxygen systems. The goals will be to look for new hard materials, potentially with properties superior or complementary to existing ones and to gain new information about the relationship between crystal structure, chemical composition, and hardness that will help in the design of new hard materials. ***