Method for measuring contents of aluminum, titanium, manganese, nickel, tungsten and iron in cobalt-base alloy

A technology for the content of cobalt-based alloys and iron, which is applied in the field of determination of aluminum, nickel, titanium, tungsten, iron, and manganese in cobalt-based alloys. It can solve the problems of long sample dissolution time, long analysis period, and uncertain selection of analysis lines.

Active Publication Date: 2010-06-02
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there is no analysis method for cobalt-based superalloys in China. Basically, the method of nickel-based superalloys is applied, which has disadvantages such as long sample dissolution time, uncertain selection of analysis lines, etc., which lead to long analysis cycles.

Method used

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  • Method for measuring contents of aluminum, titanium, manganese, nickel, tungsten and iron in cobalt-base alloy
  • Method for measuring contents of aluminum, titanium, manganese, nickel, tungsten and iron in cobalt-base alloy
  • Method for measuring contents of aluminum, titanium, manganese, nickel, tungsten and iron in cobalt-base alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] The method for determining the content of aluminum, titanium, manganese, nickel, tungsten, and iron in Co60 cobalt-based alloys uses an inductively coupled plasma emission spectrometer (French JY170). The working conditions and analysis lines of the instrument are as follows: high-frequency frequency: 40.68MHz; Slit: 20μm; Exit slit: 80μm; Incident power: 1.0Kw; Reflected power: <15W; Sample lift: 1.2L / min; Cooling air flow: 15L / min; Integration time: 2s; Sheath air flow: 0.2L / min; internal standard analysis line: Y 371.029nm; elemental analysis line: manganese 257.610nm, titanium 334.941nm, aluminum 394.401nm, nickel 351.505nm, tungsten 207.911nm, iron 259.940nm;

[0106] (1), the reagents used in the determination process are as follows:

[0107] (1.1), hydrochloric acid, ρ is about 1.19g / mL; superior grade or high purity;

[0108] (1.2), nitric acid, ρ is about 1.42g / mL; superior grade or high purity;

[0109] (1.3), sulfuric acid, ρ about 1.84g / mL; superior grade ...

Embodiment 2

[0143] The method for measuring the content of manganese, nickel and iron in CoCrMo cobalt-based alloys uses an inductively coupled plasma emission spectrometer (France JY170). The working conditions and analysis lines of the instrument are as follows: high frequency frequency: 40.68MHz; incident slit: 20μm; exit Slit: 15μm; Incident power: 1.0Kw; Reflected power: <15W; Sample lift: 1.2L / min; Cooling air flow: 15L / min; Integration time: 4s; Standard analysis line: Y 371.029nm; elemental analysis line: manganese 257.610nm, nickel 351.505nm, iron 259.940nm;

[0144] (1), the reagents used in the determination process are as follows:

[0145] (1.1), hydrochloric acid, ρ is about 1.19g / mL; superior grade or high purity;

[0146] (1.2), nitric acid, ρ is about 1.42g / mL; superior grade or high purity;

[0147] (1.3), sulfuric acid, ρ about 1.84g / mL; superior grade or high purity;

[0148] (1.4), phosphoric acid, ρ is about 1.69g / mL; superior grade or high purity;

[0149] (1.5),...

Embodiment 3

[0172] The method for measuring the content of manganese, nickel, tungsten and iron in GH188 cobalt-based alloy adopts inductively coupled plasma emission spectrometer (French JY170). The working conditions and analysis lines of the instrument are as follows: high-frequency frequency: 40.68MHz; incident slit: 20μm ;Exit slit: 80μm; Incident power: 1.0Kw; Reflected power: <15W; Sample lift: 1.2L / min; Cooling air flow: 15L / min; Integration time: 5s; ; Internal standard analysis line: Y 371.029nm; Element analysis line: manganese 257.610nm, nickel 351.505nm, tungsten 207.911nm, iron 259.940nm;

[0173] (1), the reagents used in the determination process are as follows:

[0174] (1.1), hydrochloric acid, ρ is about 1.19g / mL; superior grade or high purity;

[0175] (1.2), nitric acid, ρ is about 1.42g / mL; superior grade or high purity;

[0176] (1.3), sulfuric acid, ρ about 1.84g / mL; superior grade or high purity;

[0177] (1.4), phosphoric acid, ρ is about 1.69g / mL; superior gr...

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Abstract

The invention belongs to a technique for analyzing elements of an alloy, and relates to a method for measuring the contents of aluminum, titanium, manganese, nickel, tungsten and iron in a cobalt-base alloy. The method adopts an inductively coupled plasma atomic emission spectrometer and is different according to different measured elements and different tungsten contents; when high-content tungsten is dissolved, the volume of test solution needs to be maintained between 20 and 40 mL, or the tungsten is easy to be separated out; 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 sample dissolving speed is accelerated, and the sample dissolving time is shortened to 2 hours from about two or three days; and the method has wide measuring ranges including: 0.05 to 0.30 percent of the aluminum, 0.05 to 0.30 percent of the titanium, 0.05 to 1.00 percent of the manganese, 0.05 to 24.00 percent of the nickel, 0.05 to 20.00 percent of the tungsten, and 0.05 to 3.00 percent of the iron.

Description

technical field [0001] The invention belongs to alloy element analysis technology, and relates to a method for determining the contents of aluminum, titanium, manganese, nickel, tungsten and iron 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 ordinary superalloys, and if the sample dissolution method of nickel-based and iron-based superalloys is simply applied, there is often the phenomenon that the cobalt-based superalloy samples are not completely dissolved. The rapid and efficient dissolution technology of cobalt-based superalloy samples formed through repeated experiments and explorations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/44G01N1/38
Inventor 高颂叶晓英杨春晟
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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