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许多铝厂曾发现,经热轧、冷轧而成的铅板表面宏观上存在阴阳色,它对机械性能虽影响不大,但影响美观,只能作为次品出售。该缺陷存在于表层,用化学分析法无法取样,而电子探针常规分析法,数据离散性大,不能园满地解释阴阳色缺陷的原因。我们采用探针统计平均法和电子微束技术(SEM、EDS、WDS)进行分析,取得了满意的结果。一、仪器日立S-570扫描电子显微镜EPM-810Q电子探针显微分析仪(日本岛津制作所)及EDAX-9100能谱仪(日本菲利浦)。二.实验方法和测试条件1.用扫描电子显微镜进行表面微观形貌观察。2.探针统计平均定性分析根据EDAX-9100能谱仪测定结果不能解释阴阳区的产生原因。利用电子探针自动面分析程序对阴阳两区表面,在相同实验条件下,各测400个点的FeA_α、OA_α、AlK_α和CK_α特征射线的计数。然后将所得的各400个计数用计算机进行统计平均处理,得出阴区和阳区表面FeK_α、Ok_α、AlK_α和CK_α的统计平均计数。并
Many aluminum plants have found that the hot-rolled, cold-rolled lead plate surface macroscopic existence of yin and yang, it has little effect on the mechanical properties, but the impact on beauty, can only be sold as defective. The defects exist in the surface layer, the chemical analysis can not be sampled, and conventional electronic probe analysis, data dispersion is large, can not explain the cause of the dark-colored defects. We used probe statistical average method and electron micro-beam technology (SEM, EDS, WDS) analysis, and achieved satisfactory results. First, the instrument Hitachi S-570 Scanning Electron Microscope EPM-810Q electron probe microanalysis (Japan Shimadzu Corporation) and EDAX-9100 spectrometer (Japan Phillips). Two. Experimental methods and test conditions 1. Scanning electron microscopy of the surface microscopic morphology. 2. Statistical analysis of the probe average qualitative analysis according to EDAX-9100 spectrometer results can not explain the causes of yin and yang area. Electron probe automatic surface analysis program was used to count the FeA_α, OA_α, AlK_α and CK_α ray counts of 400 spots on the surface of yin and yang under the same experimental conditions. Then, the 400 counts obtained were statistically averaged to obtain the statistical average counts of FeK_α, Ok_α, AlK_α and CK_α on the surface of the overcast zone and the ventral zone. and