A Rapid Semiquantitative Method for Trace Elements in gh4169 Alloy

Abstract

The invention aims at providing a method for quickly semi-quantifying GH4169 alloy trace elements. The method comprises the following steps of: semi-quantifying the GH4169 alloy trace elements by adopting fluorescent spectrometry, and working out 1% net strength value of the GH4169 alloy trace elements; figuring out a critical strength value when the contents of the trace elements are respectively equal to 0.005% according to the 1% net strength value of the trace elements; comparing the measured strength of a test sample with the critical characteristic spectral line strength of the test sample to directly judge whether the test sample satisfies the requirements or not; or drawing a single-scale sensitivity curve by utilizing a proportional relationship between the element contents and the characteristic spectral line strength, so that the contents of three trace elements in the test sample are quickly semi-quantified. The method for quickly semi-quantifying GH4169 alloy trace elements does not need chemical pre-treatment and causes no damages to the surface of the test sample, can be used for conveniently testing the test sample again and again, is capable of greatly improving the material inspection efficiency in the production and shortening the analysis period and can well meet the modern generation requirements. Moreover, the method can be expanded to semi-qualifying analysis of trace elements in other high-temperature alloys.

Description

technical field [0001] The invention belongs to the field of trace chemical composition analysis of metal materials, and in particular provides a method suitable for smelting, forging, raw material, semi-finished product inspection, intermediate process quality control of GH4169 metal materials and component analysis method of impurity elements in GH4169 metal materials. Background technique [0002] At present, atomic absorption graphite furnace, inductively coupled plasma mass spectrometer, atomic fluorescence, spectrometer, etc. are usually used to analyze impurity elements in metal materials. [0003] Atomic absorption graphite furnace, inductively coupled plasma mass spectrometer, and atomic fluorescence all require chemical pretreatment of the sample, and the measurement process is cumbersome, so these solutions have the disadvantages of long analysis period, cumbersome operation, expensive equipment, and high test cost. . Moreover, these instruments all have strong l...

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Problems solved by technology

Due to the difficulty in the pre-treatment of the atomic absorption graphite furnace sample and the high cost of the test, the graphite tube is a consumable item, each worth more than two thousand yuan, and can only be used about 200 times; at the same time, the modern production rhythm is tight, which has a great impact on the material testing cycle. Strong requirements, the atomic absorption graphite furnace method is difficult to meet the production needs due to its long analysis period; in addition, the performance of the graphite furnace is unstable, which has become the bottleneck of the chemical composition detection of GH4169 alloy materials