Method for measuring content of boron in cobalt-base alloy

A cobalt-based alloy and boron content technology, applied in the preparation of test samples, color/spectral characteristic measurement, etc., can solve the problems of long sample dissolution time, long analysis cycle, uncertain analysis line selection, etc., and achieve simple operation, Wide measurement range, saving manpower and material resources
CN101718688AActive Publication Date: 2010-06-02AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
Publication Date
2010-06-02

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Abstract

The invention belongs to a technique for analyzing trace elements of an alloy, and relates to a method for measuring the content of boron in a cobalt-base alloy. By adopting an inductively coupled plasma emission spectrometer and treating a sample of the cobalt-base alloy in particular a high-tungsten sample by using 20mL of hydrochloric acid, nitric acid and hydrofluoric acid, the method solves the puzzling problems that the past dissolved sample has large reagent dosage and high reagent blank and cannot be measured normally by an instrument; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the method has wide measuring ranges, the measuring lower limit is 0.002 percent, and the measuring upper limit is 0.20 percent and is 101 times of the measuring lower limit; and the method can perform measurement quickly, is simple and convenient to operate, and saves a large quantity of manpower and material resources.
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Description

technical field

[0001] The invention belongs to alloy trace element analysis technology, and relates to a method for measuring boron content in cobalt-based alloys. Background technique

[0002] At present, there is no detection method standard for the analysis of the composition of cobalt-based superalloys at home and abroad. The methods used in the current work of many testing centers are based on the method standards of nickel-based superalloys. Due to the special structure of cobalt-based superalloys, its The sample dissolution time is much longer than that of other common superalloys, and if the sample dissolution method of nickel-based and iron-based superalloys is simply applied, there will often be incomplete dissolution of cobalt-based superalloy samples.

[0003] The control of boron in cobalt-based superalloys is very strict. The measurement limit of B element is 0.005%, and the measurement limit is 0.20%. Therefore, accurate analysis of boron content in the alloy...

Claims

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