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A method for measuring oxygen content in high hydrogen metal titanium

A technology of metal titanium and oxygen content, applied in the field of analysis and testing, can solve problems such as the increase of oxygen content results, and achieve the effects of easy mastery, avoiding the generation of methane, and reliable quality control

Active Publication Date: 2020-07-31
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: due to the high hydrogen content in the high-hydrogen metal titanium, it is easy to react with the carbon in the high-purity graphite crucible to generate methane, and the methane reacts with the copper oxide as a catalyst in the analyzer at a temperature of 650 ° C. A reaction occurs to form carbon dioxide, which increases the final measured oxygen content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Determination of Oxygen Content in a Laboratory-made High Hydrogen Metal Titanium 1# Sample

[0057] 1. Instrument preparation

[0058] The instrument used in the present invention is the TCH600 oxygen, nitrogen and hydrogen analyzer of LECO Company. Before the analysis, the instrument is preheated and the carrier gas is passed through, so that the temperature of the inlet catalyst and the temperature of the inlet purifier reach 650 ° C, and the oxygen content analysis is carried out by ventilation for 1 hour . The carrier gas is high-purity helium, the working pressure is 20psi, and the ventilation flow rate is 450ml / min; the power gas is high-purity nitrogen, and the working pressure is 40psi;

[0059] 2. Establishment of analytical methods

[0060] The degassing power is 5.5kW, 2 times of degassing, and the analysis delay is 20s. The analysis power adopts the step-by-step heating mode, stay at the low power of 1.2kW for 80s, and then keep at the high powe...

Embodiment 2

[0067] Example 2: Determination of oxygen content in a laboratory-made high-hydrogen metal titanium 2# sample

[0068] 1. Instrument preparation

[0069] The instrument used in the present invention is the TCH600 oxygen, nitrogen and hydrogen analyzer of LECO Company. Before the analysis, the instrument is preheated and the carrier gas is passed through, so that the temperature of the inlet catalyst and the temperature of the inlet purifier reach 650 ° C, and the oxygen content analysis is carried out by ventilation for 1 hour . The carrier gas is high-purity helium, the working pressure is 20psi, and the ventilation flow rate is 450ml / min; the power gas is high-purity nitrogen, and the working pressure is 40psi;

[0070] 2. Establishment of analytical methods

[0071] The degassing power is 5.5kW, 2 times of degassing, and the analysis delay is 20s. The analysis power adopts the step-by-step heating mode, stay at the low power of 1.2kW for 80s, and then keep at the high po...

Embodiment 3

[0078] Example 3: Oxygen content determination of a laboratory-made high-hydrogen metal titanium 3# sample

[0079] 1. Instrument preparation

[0080] The instrument used in the present invention is the TCH600 oxygen, nitrogen and hydrogen analyzer of LECO Company. Before the analysis, the instrument is preheated and the carrier gas is passed through, so that the temperature of the inlet catalyst and the temperature of the inlet purifier reach 650 ° C, and the oxygen content analysis is carried out by ventilation for 1 hour . The carrier gas is high-purity helium, the working pressure is 20psi, and the ventilation flow rate is 450ml / min; the power gas is high-purity nitrogen, and the working pressure is 40psi;

[0081] 2. Establishment of analytical methods

[0082] The degassing power is 5.5kW, 2 times of degassing, and the analysis delay is 20s. The analysis power adopts the step-by-step heating mode, stay at the low power of 1.2kW for 80s, and then keep at the high power...

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PUM

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Abstract

The invention belongs to the technical field of analysis and test, and in particular relates to a method of testing oxygen content in high hydrogen metallic titanium. The method tests the oxygen content in high hydrogen metallic titanium by means of an inert melted-infrared absorption method. The melting point of the metallic titanium is reduced by way of adding a proper amount of a fluxing agent-nickel capsule nickel particle combined form and the content of oxygen in the high hydrogen metallic titanium is tested accurately by setting reasonable analytical parameters. The method is simple tooperate and easy to master, can test the oxygen content in high hydrogen metallic titanium quickly and accurately, effectively solves the problem that the detection result of the oxygen content in high hydrogen metallic titanium is too high, and provides a reliable guarantee to quality control of production, scientific research and application of high quality metallic titanium.

Description

technical field [0001] The invention relates to a method for measuring the oxygen content in high-hydrogen metal titanium, which belongs to the technical field of analysis and testing. Background technique [0002] Oxygen in metal titanium exists in a solid solution state, and its content directly affects the performance of titanium metal products. It is very important to analyze and control the oxygen content in titanium and its alloys. In recent years, the inert fusion infrared absorption method has been widely used in the determination of oxygen content in metals, alloys and rare earth materials due to its advantages of high accuracy and simple operation. The inert fusion infrared absorption method is also used to determine the oxygen content in titanium and titanium alloys, but the samples are all low-hydrogen samples, and the hydrogen content does not exceed 200ppm. For high-hydrogen samples with a hydrogen content greater than 0.5%, due to the high hydrogen content in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563G01N2021/3572
Inventor 韩丽辉于春梅
Owner UNIV OF SCI & TECH BEIJING
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