【摘要】 本文将20钢试样在铸铁浴中进行不同温度和时间的渗碳，用金相法测定层深，根据公式：ρ2=koτ·e-Q/RY对碳的激活能（Q）进行计算．结果表明：试样在1270℃的铸铁液中保留30秒，渗碳层达0．25mm；在1300℃的铸铁液中保留30秒，渗碳层达O．27mm。且与气体渗碳法相比激活能下降近41％。更多还原

【Abstract】 In the paper 20 steel specinens were carburized in liquid cast -iron at different temperature and time. The depth of carburization was determined by metalloscope. The activation energy for carburization was ρ2 = koτ· e-Q/RY. The rebults show that the depth of carburized layer of specimens immersed for 30s in 1270℃ and 1300℃ liquid cast-iron is ahout0. 25 and 0. 27mm, and There is about 41％ decrease in the activation energy as comparedwith gas-carburization.更多还原