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一、前言钢在含有还原能力但不引起钢表面脱碳的中性气氛中进行加热淬火,或在渗碳性气氛中进行渗碳,炉气皆需有碳势。碳势是炉气渗碳能力的表征,通常用给定温度下钢与炉气达到动态平衡(不脱碳也不增碳)时,钢表面的含碳量来表示该气氛的碳势。
I. INTRODUCTION Steels are hardened in a neutral atmosphere containing reductant but do not cause decarburisation on the steel surface or carburized in a carburizing atmosphere. The carbon potential is a sign of the carburizing ability of the furnace gas. The carbon content of the steel surface is usually expressed as the carbon potential of the atmosphere when the steel and furnace gas are dynamically balanced (not decarburised nor carbon-increased) at a given temperature.