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对钢箔称重法测量气氛氮势做了进一步研究 ,结果表明 :用 0 .0 5 mm厚的钢箔氨渗 40 min左右 ,钢箔中的氮浓度与炉气达到平衡。5 10℃渗氮时 ,氮势与氨分解率成线性关系 :Np=0 .72 8- 0 .797α。
A further study on the measurement of nitrogen potential in the steel foil weighing method was carried out. The results showed that the ammonia concentration in the steel foil was balanced with the furnace gas by ammonia permeation for 40 min at a thickness of 0.05 mm. 5 Nitriding at 10 ℃, the nitrogen potential and ammonia decomposition rate of a linear relationship: Np = 0.72 8- 0.797α.