目前微小金刚石微粉砂轮难以满足非球面光学元件纳米级超精密磨削的要求，本项目提出一种金刚石微粉砂轮的低温制备新方法。当金属粒子的尺寸减少到纳米尺度的超细粒子时，金属纳米粒子的熔点、烧结温度均比块状金属和粗颗粒金属低很多。当使用铜或铁纳米粒子做结合剂时，利用纳米粒子的低熔点特性、比表面积大等特殊性能，使铜、铁纳米粒子在较低的温度下烧结成结合剂，使金刚石微粉砂轮的制备温度比传统的烧结温度低很多。对金刚石微粉砂轮在制备过程中的纳米金属结合剂低温熔化机理、纳米粒子/金刚石磨粒的均布分散方法、纳米粒子的低温烧结行为、砂轮低温制备工艺方法、砂轮的磨削特性进行研究，探讨其中的科学问题和关键技术，获得一种纳米金属结合剂金刚石微粉砂轮低温制备新方法。

Micro diamond grinding wheel is difficult to meet requirements in nano-precision grinding of aspheric optical elements at present, a new low-temperature fabrication method of ultrafine diamond grinding wheel is proposed. It is well known that the melting point and sintering temperature of metal nanoparticles is much lower than that of normal metal material. When Cu-nanoparticles of Fe-nanoparticles are used to act as metal bond, the metal bond can be sintered. Therefore, ultrafine diamond grinding wheel could be fabricated at low temperature compared with traditional fabrication of metal-bond grinding wheel. Low-temperature melting mechanism of metal nanoparticles, uniform dispersion method of nanoparticles and diamond powders, low-temperature sintering characteristics, low-temperature fabrication process of wheel and grinding characteristics of wheel should be studied in order to get a new low-temperature fabrication method of metal nanoparticles bond ultrafine diamond grinding wheel.