Abstract：The property of carburized gear were greatly affected by surface carbon content, carburized coating thickness and carbon content distribution. Two gear samples with different carburizing process conditions were used as research object.The quantitative analysis of surface carbon content, the carburized coating thickness and the carbon content distribution state was conducted by adjusting the working conditions of electron probe X-ray micro-analyzer. The optimal conditions were obtained as follows: the acceleration voltage was 10 kV, the electron beam current was 200 nA and the beam size was 20 μm. Meanwhile, the determination results of carbon content in center of two gears were compared with those obtained by spark source atomic emission spectrometry. The carbon content distribution and hardness gradient were also compared. The results showed that the measured results of carbon content in center of samples by electron probe analyzer were closed to those obtained by spark source atomic emission spectrometry. The carbon distribution tread of two samples tested by electron probe was similar to the hardness gradient distribution tread obtained by the hardness meter. Therefore, the carbon content in carburized coating could be accurately determined by electron probe X-ray micro-analyzer. Moreover, the carbon content distribution in whole carburized coating of sample with different carburizing process conditions could be intuitively reflected.
张晓菊,李建龙. 齿轮渗碳层碳含量分布的电子探针定量分析方法探讨[J]. 冶金分析, 2016, 36(1): 67-70.
ZHANG Xiao-ju, LI Jian-long. Discussion on the quantitative analysis method of carbon content distribution in carburized coating of gears by electron probe X-ray micro-analyzer. , 2016, 36(1): 67-70.
冯再新,张治民,周贤宾.直齿轮渗碳层厚度分布与组织改善技术途径[J].中国机械工程,2004,15(12):1108-1110.FENG Zai-xin,ZHANG Zhi-min,ZHOU Xian-bin.Technical approaches of improving carburized-case depth distribution and microstructure for gears[J].China Mechanical Engineering, 2004,15(12):1108-1110.
[3]
韩敏健.气体渗碳工艺参数的优化[J].西安航空技术高等专科学校学报,2001,19(3):39-41.HAN Min-jian.The optimization of gas carburizing technique[J].Journal of Xi’an Aerothechnical College, 2001,19(3):39-41.
[4]
徐萃章.电子探针分析原理[M].北京:科学出版社,1990:150-420.
[5]
龚沿东.电子探针(EPMA)简介[J].电子显微学报,2010,29(6):578-580.GONG Yan-dong.Electron probe X-ray micro-analyzer(EPMA) [J].Journal of Chinese Electron Microscopy Society,2010,29(6):578-580.
[6]
李兰群,尹艳清.高频感应燃烧-红外吸收法测定复合碳硅锰铁合金中碳和硫[J].冶金分析,2010,30(6):62-65.LI Lan-qun,YIN Yan-qing.Determination of carbon and sulfur in complex carbon ferro-silico-manganese alloy by high frequency-infrared absorption method[J].Metallurgical Analysis, 2010,30(6):62-65.
[7]
徐永林,梁潇,张东生.火花源原子发射光谱法测定取向硅钢中碳硅锰磷硫[J].冶金分析,2013,33(10):19-23.XU Yong-lin,LIANG Xiao,ZHANG Dong-sheng.Determination of carbon, silicon, manganese, phosphorus and sulfur in oriented silicon steel by spark source atomic emission spectrometry[J]. Metallurgical Analysis, 2013,33(10):19-23.
