Sintering and mechanical properties of carbon bulks from ordered mesoporous carbon and nano diamond

Abstract Powder metallurgy is important in material preparation. Due to the inertness of carbon materials, however, sintering powdered into physically coherent bulks has been a great challenge even at high temperature (2000 °C). Improving activity powders key success consolidation powders. Here ordered mesoporous (OMC) used as starting produce highly homogeneous novel bulks. During 1800 °C, huge specific surface area OMC greatly promotes migration atoms and thus by diffusion mechanism. When nanodiamond (ND) added, volume expansion associated with phase transformation diamond graphite facilitates densification powder compacts. The strong connection between onions derived from ND bestows as-prepared excellent mechanical properties. current research pioneers way prepare high-strength materials relatively low temperatures.