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经过一定的工艺加工，碳可成为一种理想的活塞材料。这是德国戴姆勒-奔驰-康采恩集团的研制成果。用作活塞的碳首先必须是非常纯净的。戴姆勒-奔驰所使用的坯件是在烧结炉中烧制了大约三个月，使其细粒结构的性能达到所需的值；再在保护气层中进行退火处理，而得到的一个黑色碳
After a certain process, carbon can be an ideal piston material. This is the result of the German Daimler-Benz-Charten Group. Carbon used as a piston must first be very pure. The blanks Daimler-Benz used were fired in a sintering furnace for about three months to achieve the desired properties of the fine-grained structure; annealing was performed in the protective gas blanket and the resulting one Black carbon