A range of Al/diamond metal matrix composites using advanced core-shell structured diamond powders was fabricated employing solid-state cold spray additive manufacturing technology. Cold spray technique combined with core-shell structured diamond particles has demonstrated excellent capability to produce dense Al/diamond composites with superior tribological properties. The core-shell structured diamond was easier to deposit than pure Al by cold spray, particularly under low particle impact velocity, implying high potentials as preferential feedstock for cold spray. The wear-resistance performance of the Al/diamond composites produced by nitrogen and helium were investigated. Wear test illustrated that the Al/diamond composites had superior wear-resistance properties comparable to the selective laser meting Inconel 625 and 17−4PH alloys. Higher diamond contents in the composites resulted in better wear resistance. Based on the worn track analysis via X-ray computed tomography, the role of the diamond reinforcement in improving the wear-resistance performance was also clarified.

利用固态冷喷涂添加剂制造技术，制造了一系列使用先进的核壳结构金刚石粉末的铝/金刚石金属基复合材料。冷喷涂技术与核-壳结构金刚石颗粒的结合已证明具有优异的生产具有优异摩擦学性能的致密Al /金刚石复合材料的能力。核壳结构的金刚石比纯铝通过冷喷涂更容易沉积，特别是在低粒子撞击速度下，这意味着作为冷喷涂优先原料的潜力很高。研究了氮和氦制备的Al /金刚石复合材料的耐磨性能。磨损测试表明，铝/金刚石复合材料具有优于选择性激光烧结Inconel 625和17-4PH合金的耐磨性。复合物中较高的金刚石含量导致更好的耐磨性。基于通过X射线计算机断层扫描进行的磨损轨迹分析，还明确了金刚石增强剂在改善耐磨性能方面的作用。