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。
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Meanwhile, high surface hardness after heat treatment, the coating surface formed into the amorphous and crystalline mixture, the hardness is up to 1200hv.