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为了提高高速钢光谱分析的准确度,在本文中比较系统地研究了激发条件和样品的组织结构对于准确度的影响。关于激发条件方面,比较了用各种不向光源所得到的单次分析的误差,指出火花光源的分析准确度一般比电弧光源的高,但是用各种光源所得的准确度与所选用的分析线对有密切的关系。考察了电弧电流对于定标曲线的影响,首次观察到在定标曲线斜度b对于电流的关系曲线上当电流约为1安培时有一个最大值出现,对于出现最大值的原因提出了初步的看法。用简单火花光源考察了极距对于定标曲线斜度b的影响,指出增加极距使铬和钒的定标曲线斜度b降低,但是对于钨的却没有显著的影响。关于组织结构方面,用自己制备的高速钢标准样品制定了具有不同的组织结构(铸造的、热锻的和退火的组织)的样品的定标曲线。用电弧作光源时,观察到组织结构的不同使定标曲线发生平移,用火花光源时这种现象并不显著。根据我们以前关于这方面所得的结果,对于定标曲线的平移现象提出了定性的解释。
In order to improve the accuracy of HSS spectrum analysis, we systematically studied the influence of excitation conditions and sample structure on the accuracy. As to the excitation conditions, the error of single analysis with different light sources is compared. The analysis accuracy of the light source is generally higher than that of the arc light source. However, the accuracy of the light sources and the analysis Line pairs are closely related. The effect of arc current on the calibration curve was investigated. It was first observed that there was a maximum at a current of about 1 amp on the slope of the calibration curve b, and a preliminary view was given of the reason for the maximum . The effect of polar distance on the slope b of the calibration curve was investigated with a simple spark source. It was pointed out that increasing the polar distance decreased the slope b of calibration curve for chromium and vanadium, but had no significant effect on tungsten. Regarding the organizational structure, the calibration curves of samples with different organizational structures (cast, hot forged and annealed) were developed with the high speed steel standard samples prepared by themselves. When the electric arc is used as the light source, the difference of the structure of the structure is observed to shift the calibration curve. This phenomenon is not significant when using a spark light source. Based on our previous results on this aspect, we present a qualitative explanation of the shift of the calibration curve.