This releases a mixture of hydrogen and carbon monoxide, known as syngas, and leaves a residue of amorphous elemental carbon called carbon black.
这一过程产生氢气和一氧化碳的混合物，也叫做合成气，剩余的是无定形的基本碳，也叫做炭黑。
Meanwhile, high surface hardness after heat treatment, the coating surface formed into the amorphous and crystalline mixture, the hardness is up to 1200hv.
同时表面硬度高，经热处理后，其镀层表面形成非晶态和晶态的混合物时，硬度可达1200 HV。
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