CN108896536A - Aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method - Google Patents
Aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method Download PDFInfo
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- CN108896536A CN108896536A CN201810640632.2A CN201810640632A CN108896536A CN 108896536 A CN108896536 A CN 108896536A CN 201810640632 A CN201810640632 A CN 201810640632A CN 108896536 A CN108896536 A CN 108896536A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/73—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using plasma burners or torches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N2001/2893—Preparing calibration standards
Abstract
The present invention provide aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method, the method is that the content of aluminium, niobium, tungsten, chromium in high niobium aluminum titanium alloy is measured using inductively coupled plasma atomic emission spectrometry, specifically includes and prepares testing sample solution, preparing standard solution, establishes standard curve, each element content in measurement testing sample solution.The present invention prepares series standard solution using Matrix phase, spectral line between Matrix effects and element is reduced to interfere, aluminium, niobium, tungsten, chromium in high niobium aluminum titanium alloy can be subjected to analysis measurement simultaneously on inductive coupling plasma emission spectrograph, quantification range can cover the testing requirements of high niobium aluminum titanium alloy, analysis method is easy to operate, provides reliable guarantee for the control of the production of high niobium aluminum titanium alloy, scientific research, application and quality.
Description
Technical field
The present invention relates to spectrochemical analysis the field of test technology, aluminium in specifically a kind of high niobium aluminum titanium alloy, niobium,
The measuring method of tungsten, chromium content.
Background technique
High niobium aluminum titanium alloy is a kind of emerging lightweight high-temperature structural material, is widely used in aerospace and automobile neck
Domain is the research hotspot of material science research in recent years.The elements such as aluminium, niobium, tungsten, chromium in high niobium aluminum titanium alloy can be greatly improved
Plasticity, intensity, fracture toughness, croop property and the inoxidizability of material, Accurate Determining each element content can grind for material
Hair and material property overall merit provide data and support；
High niobium aluminum titanium alloy component content differs greatly with conventional trade mark titanium alloy, and existing titanium alloy measures standard ASTM E
2371 and GB/T4698 can not measure W content, and aluminium, niobium, tungsten have exceeded existing titanium alloy chemical constituents determination standard ASTM
The measurement range of E 2371 and GB/T4698, titanium alloy, which measures, uses coupling plasma emission spectrum in standard ASTM E 2371
（ICP-OES）The element of measurement is aluminium, niobium, chromium, is only capable of measurement range and exists: Al：0% ~ 8%, Nb：0% ~ 6%, Cr：0% ~ 5%,
And in titanium alloy measurement standard GB/T4698, each element analysis method is different, can not realize multiple element while measure, and analyzes
Efficiency is poor, and the range using the aluminium element of alkali separation-EDTA complexometric titration exists: Al：0.8 % ~ 8%, using transmitting
Spectrographic determination is that element is：Aluminium, chromium, range exist: Al：0.01% ~ 0.15%, Cr：0.02% ~ 0.2%, it uses
The range for the chromium that ferrous ammonium sulfate titration measures exists：0.3% ~ 12%, and 5-Br-PADAP spectrophotometry is used to measure
The range of niobium element exist: Nb：0.2% ~ 3%, these methods are not able to satisfy composition range in Al：25% ~ 35%, Nb：10%~
16%, Cr：0.5% ~ 2.5%, W：The analysis demand of Al, Nb, Cr, W in 0.5% ~ 1.5% high niobium aluminum titanium alloy, current high niobium aluminium
The method for measuring simultaneously of aluminium, niobium, tungsten, chromium, which has no, in titanium alloy has been reported that.
Summary of the invention
To solve the above problems, the present invention provide aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method,
With hydrofluoric acid, hydrochloric acid, nitric acid sample dissolution, series standard solution is prepared using Matrix phase and establishes calibration curve, selection is suitable
Aluminium, niobium, tungsten, chromium content in suitable analysis spectral line analysis sample, inventive method is with accurate, quick, analytical procedure is simple
Feature.
The present invention is achieved through the following technical solutions：
Aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method, include the following steps：
Step 1: preparing testing sample solution：0.1g high niobium aluminum titanium alloy sample to be measured is weighed in polytetrafluoroethylene beaker, is added
After entering distilled water, 15mL hydrochloric acid, 2mL hydrofluoric acid is added dropwise, low-temperature heat to sample to be tested is completely dissolved, and adds 2mL nitre
Acid continues low-temperature heat, disappears, be cooled to room temperature to rufous cigarette in solution, be transferred in 250 mL plastics volumetric flasks, add water
Constant volume shakes up, and obtains testing sample solution, spare, 2 parts of samples to be tested of parallel processing；
Step 2: preparing standard solution：Weigh with each 4 parts of the high purity titanium of sample match, rafifinal, be respectively placed in 8 polytetrafluoros
In ethylene beaker, 5mL hydrochloric acid is added into the polytetrafluoroethylene beaker for fill rafifinal and dissolves by heating, to filling the poly- of high purity titanium
It is separately added into 10mL hydrochloric acid in tetrafluoroethene beaker and 2mL hydrofluoric acid dissolves by heating, is transferred to the capacity accordingly numbered after cooling
Bottle in, be not added standard solution be blank solution, remaining be separately added into the niobium standard solution, tungsten standard solution, chromium mark of various concentration
Each volumetric flask is diluted to scale, shaken up by quasi- solution, and standard solution is made；
Step 3: establishing standard curve：Inductively coupled plasma atomic emission spectrometer is opened, after instrument stabilizer, selection
Aluminium, niobium, tungsten, chromium analysis spectral line, each element contains in each standard solution in input step two in device analysis software
Amount, sucks standard solution one by one, establishes calibrating curve equation；
Step 4: each element content in measurement testing sample solution：Sample to be tested quality is inputted in instrumentation software, to step
Element-intensities to be measured are measured in testing sample solution made from rapid one, and obtain the intensity of spectral line of each element, according to this
The intensity of spectral line, calculated automatically by instrument aluminium in sample, niobium, tungsten, chromium each element content, after sample measurement, selection and sample
The close standard sample of constituent content to be measured verifies result accuracy as control sample.
Further, the concentration of tungsten standard solution is 100 μ g/L in step 2, and configuration method is：Draw 10mL concentration
For 1000 μ g/L tungsten national standard solution in 100mL plastics volumetric flask, be diluted to scale with 2% sodium hydrate aqueous solution,
It shakes up.
Further, the concentration of chromium standard solution is 100 μ g/L in step 2, and configuration method is：Draw 10mL concentration
For 1000 μ g/L chromium national standard solution in 100 mL plastics volumetric flasks, be diluted to scale with 10% hydrochloric acid solution, shake
It is even.
Further, the purity of high purity titanium described in step 2 is 99.99%, and the purity of the rafifinal is 99.99%.
Further, the series standard solution concentration gradient prepared in step 2 should cover smelting target value, and have 1 mark
Quasi- solution and smelting target value are close.
Further, the running parameter of the inductively coupled plasma atomic emission spectrometer is：High frequency power is
1200W, nebulizer flow are 0.7 L/min, and plasma gas flow is 15.0 L/min, and auxiliary gas flow amount is 0.20 L/
Min, observed direction are that axially, the light stability time is 15s, washing time 6s, delay time 20s, and measurement number is 2
It is secondary.
Further, aluminium described in step 3, niobium, tungsten, chromium analysis spectral line be respectively：Aluminium be 394.401 or
396.153nm, niobium be 316.340 or 269.706nm, tungsten is 207.912 or 224.876nm, chromium be 283.563 or
267.716nm。
Further, step 3 alignment curvilinear equation linearly dependent coefficient is not less than 0.995.
The beneficial effects of the present invention are：
（1）The present invention prepares series standard solution using Matrix phase, reduces spectral line between Matrix effects and element and interferes, can be by
Aluminium, niobium, tungsten, chromium carry out analysis measurement simultaneously on inductive coupling plasma emission spectrograph in high niobium aluminum titanium alloy, quantitative
Range can cover the testing requirements of high niobium aluminum titanium alloy, and analysis method is easy to operate；
（2）Detection limit of the present invention is lower, 0.006% hereinafter, calibrating curve equation linearly dependent coefficient is not less than 0.995, again
The relative standard deviation of repetition measurement random sample product（RSD）No more than 5 %, precision is higher, and recovery of standard addition is between 93.2 % ~ 110.4
%, method can quickly, the aluminium in the high niobium aluminum titanium alloy of Accurate Determining, niobium, tungsten, chromium content, be high niobium aluminum titanium alloy production,
Scientific research, application and quality control provide reliable guarantee；
In conclusion measuring method of the invention solves cannot measure aluminium, niobium, tungsten, chromium in high niobium aluminum titanium alloy simultaneously at present
The measurement of content and the problem of analysis is cumbersome, inefficiency, is commented for high niobium aluminum titanium alloy material development and material property synthesis
Valence provides data and supports.
Specific embodiment
Aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content measuring method, include the following steps：
Step 1: preparing testing sample solution：0.1g high niobium aluminum titanium alloy sample to be measured is weighed in polytetrafluoroethylene beaker, is added
After entering distilled water, 15mL hydrochloric acid, 2mL hydrofluoric acid is added dropwise, low-temperature heat to sample to be tested is completely dissolved, and adds 2mL nitre
Acid continues low-temperature heat, disappears, be cooled to room temperature to rufous cigarette in solution, be transferred in 250 mL plastics volumetric flasks, add water
Constant volume shakes up, and obtains testing sample solution, spare, 2 parts of samples to be tested of parallel processing；
Step 2: preparing standard solution：Weigh with each 4 parts of the high purity titanium of sample match, rafifinal, be respectively placed in 8 polytetrafluoros
In ethylene beaker, 5mL hydrochloric acid is added into the polytetrafluoroethylene beaker for fill rafifinal and dissolves by heating, to filling the poly- of high purity titanium
It is separately added into 10mL hydrochloric acid in tetrafluoroethene beaker and 2mL hydrofluoric acid dissolves by heating, is transferred to the capacity accordingly numbered after cooling
Bottle in, be not added standard solution be blank solution, remaining be separately added into the niobium standard solution, tungsten standard solution, chromium mark of various concentration
Each volumetric flask is diluted to scale, shaken up by quasi- solution, and standard solution is made；
Step 3: establishing standard curve：Inductively coupled plasma atomic emission spectrometer is opened, after instrument stabilizer, selection
Aluminium, niobium, tungsten, chromium analysis spectral line, each element contains in each standard solution in input step two in device analysis software
Amount, sucks standard solution one by one, establishes calibrating curve equation；
Step 4: each element content in measurement testing sample solution：Sample to be tested quality is inputted in instrumentation software, to step
Element-intensities to be measured are measured in testing sample solution made from rapid one, and obtain the intensity of spectral line of each element, according to this
The intensity of spectral line, calculated automatically by instrument aluminium in sample, niobium, tungsten, chromium each element content, after sample measurement, selection and sample
The close standard sample of constituent content to be measured verifies result accuracy as control sample.
Further, the concentration of tungsten standard solution is 100 μ g/L in step 2, and configuration method is：Draw 10mL concentration
For 1000 μ g/L tungsten national standard solution in 100mL plastics volumetric flask, be diluted to scale with 2% sodium hydrate aqueous solution,
It shakes up.
Further, the concentration of chromium standard solution is 100 μ g/L in step 2, and configuration method is：Draw 10mL concentration
For 1000 μ g/L chromium national standard solution in 100 mL plastics volumetric flasks, be diluted to scale with 10% hydrochloric acid solution, shake
It is even.
Further, the purity of high purity titanium described in step 2 is 99.99%, and the purity of the rafifinal is 99.99%.
Further, the series standard solution concentration gradient prepared in step 2 should cover smelting target value, and have 1 mark
Quasi- solution and smelting target value are close.
Further, the running parameter of the inductively coupled plasma atomic emission spectrometer is：High frequency power is
1200W, nebulizer flow are 0.7 L/min, and plasma gas flow is 15.0 L/min, and auxiliary gas flow amount is 0.20 L/
Min, observed direction are that axially, the light stability time is 15s, washing time 6s, delay time 20s, and measurement number is 2
It is secondary.
Further, aluminium described in step 3, niobium, tungsten, chromium analysis spectral line be respectively：Aluminium be 394.401 or
396.153nm, niobium be 316.340 or 269.706nm, tungsten is 207.912 or 224.876nm, chromium be 283.563 or
267.716nm。
Further, step 3 alignment curvilinear equation linearly dependent coefficient is not less than 0.995.
Below by specific embodiment, the present invention will be further described, but is not meant to the scope of the present invention
Limitation.
Embodiment 1：
Step 1：First prepare testing sample solution：0.1g high niobium aluminum titanium alloy sample to be measured is weighed in polytetrafluoroethylene beaker,
After distilled water, 15mL hydrochloric acid is added, 2mL hydrofluoric acid is added dropwise, low-temperature heat to sample to be tested is completely dissolved, and adds 2mL
Nitric acid continues low-temperature heat, disappears, be cooled to room temperature to rufous cigarette in solution, be transferred in 250 mL plastics volumetric flasks, add
Water constant volume, shakes up, and obtains testing sample solution, spare, 2 parts of samples to be tested of parallel processing；
Step 2: preparing standard solution：Weigh with each 4 parts of the high purity titanium of sample match, rafifinal, be respectively placed in 8 polytetrafluoros
In ethylene beaker, the purity of the high purity titanium is 99.99%, and the purity of the rafifinal is 99.99%, to filling the poly- of rafifinal
5mL hydrochloric acid is added in tetrafluoroethene beaker to dissolve by heating, 10mL is separately added into the polytetrafluoroethylene beaker for fill high purity titanium
Hydrochloric acid and 2mL hydrofluoric acid dissolve by heating, and are transferred in the volumetric flask accordingly numbered after cooling, it is blank that standard solution, which is not added,
Liquid, remaining be separately added into the niobium standard solution of various concentration, tungsten standard solution, chromium standard solution, each volumetric flask is diluted to
Scale shakes up, and standard solution is made；
Wherein the concentration of tungsten standard solution is 100 μ g/L, and configuration method is：Draw the tungsten country that 10mL concentration is 1000 μ g/L
Standard solution is diluted to scale in 100mL plastics volumetric flask, with 2% sodium hydrate aqueous solution, shakes up；Chromium standard solution
Concentration is 100 μ g/L, and configuration method is：Drawing 10mL concentration is the chromium national standard solution of 1000 μ g/L in 100 mL plastics
In volumetric flask, it is diluted to scale with 10% hydrochloric acid solution, is shaken up；Niobium standard solution, tungsten standard solution, chromium standard is wherein added
The concentration gradient of the series standards solution such as solution should cover smelting target value, and have 1 standard solution and smelt target value and approach,
Recommend but is not limited only to prepare by such as the following table 1：
1 standard solution of table is with tabulation
Step 3: establishing standard curve：Inductively coupled plasma atomic emission spectrometer is opened, after instrument stabilizer, selection
Aluminium, niobium, tungsten, chromium analysis spectral line, the aluminium, niobium, tungsten, chromium analysis spectral line be respectively：Aluminium be 394.401 or
396.153nm, niobium be 316.340 or 269.706nm, tungsten is 207.912 or 224.876nm, chromium be 283.563 or
It is molten to suck standard one by one for 267.716nm, each element content in each standard solution in input step two in device analysis software
Liquid establishes calibrating curve equation, and linearly dependent coefficient is not less than 0.995, the inductively coupled plasma atomic emission spectrum
The running parameter of instrument is：High frequency power is 1200W, and nebulizer flow is 0.7 L/min, and plasma gas flow is 15.0 L/
Min, auxiliary gas flow amount are 0.20 L/min, and observed direction is that axially, the light stability time is 15s, and washing time 6s prolongs
The slow time is 20s, and measurement number is 2 times；
Step 4: each element content in measurement testing sample solution：Sample to be tested quality is inputted in instrumentation software, to step
Element-intensities to be measured are measured in testing sample solution made from rapid one, and obtain the intensity of spectral line of each element, according to this
The intensity of spectral line, calculated automatically by instrument aluminium in sample, niobium, tungsten, chromium each element content, after sample measurement, selection and sample
The close standard sample of constituent content to be measured is verified result accuracy, as shown in table 2 below as control sample：
The measurement of 2 BG-2A1 sample of table and control sample verification result
As shown in table 2, the content of Al, Cr, W, Nb illustrate that the detection method result is accurate, application effect is good in range.
Embodiment 2：Measure aluminium in high niobium aluminum titanium alloy, niobium, tungsten, chromium content detection limit
After establishing calibration curve, the measured value that the blank solution of standard solution is not added is method blank value, is measured in parallel 10 times.It is empty
3 times of white value standard deviation are method detection limit, are as a result listed in the table below shown in 3.
3 method detection limit of table
From table 3 it is observed that its detection limit is lower, 0.006% hereinafter, it can be seen that the sensitivity of this measuring method compared with
Height is able to satisfy aluminium, niobium, tungsten, chromium mark feed needs.
Embodiment 3：Precision test
6 measurements are carried out to BG-2A1 sample, relative standard deviation RSD is precision.As a result it is listed in the table below shown in 4：
4 Precision test result of table
As can be seen that the relative standard deviation of replication sample from upper table 4（RSD）No more than 5 %, precision is higher.
Embodiment 4：Recovery of standard addition test
3 parts of sample solutions of parallel processing, are added a certain amount of aluminium, niobium, tungsten, chromium standard solution by concentration gradient respectively, and measurement adds
Scalar calculates recovery of standard addition, as a result as shown in table 5 below：
5 recovery of standard addition test result of table
Find out from upper table 5, in the range of 93.2% ~ 110.4%, it is good accurate to illustrate that analysis method has for the rate of recovery
Property.
Part not in the detailed description of the invention is the prior art.
In conclusion measuring method quick, at low cost, result easy to operate of the present invention has good stabilization
Property, reproducibility and accuracy, can be by aluminium, niobium, tungsten, chromium in high niobium aluminum titanium alloy on inductive coupling plasma emission spectrograph
Analysis measurement is carried out simultaneously.
Main feature of the invention, application method, basic principle and advantages of the present invention has been shown and described above.This
Industry technology personnel are it should be appreciated that the present invention is not limited to the above embodiments, and described in the above embodiment and specification
It is to illustrate the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention can also have according to the actual situation
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (8)
1. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy, niobium, tungsten, chromium content, it is characterised in that：Include the following steps：
Step 1: preparing testing sample solution：0.1g high niobium aluminum titanium alloy sample to be measured is weighed in polytetrafluoroethylene beaker, is added
After entering distilled water, 15mL hydrochloric acid, 2mL hydrofluoric acid is added dropwise, low-temperature heat to sample to be tested is completely dissolved, and adds 2mL nitre
Acid continues low-temperature heat, disappears, be cooled to room temperature to rufous cigarette in solution, be transferred in 250 mL plastics volumetric flasks, add water
Constant volume shakes up, and obtains testing sample solution, spare, 2 parts of samples to be tested of parallel processing；
Step 2: preparing standard solution：Weigh with each 4 parts of the high purity titanium of sample match, rafifinal, be respectively placed in 8 polytetrafluoros
In ethylene beaker, 5mL hydrochloric acid is added into the polytetrafluoroethylene beaker for fill rafifinal and dissolves by heating, to filling the poly- of high purity titanium
It is separately added into 10mL hydrochloric acid in tetrafluoroethene beaker and 2mL hydrofluoric acid dissolves by heating, is transferred to the capacity accordingly numbered after cooling
Bottle in, be not added standard solution be blank solution, remaining be separately added into the niobium standard solution, tungsten standard solution, chromium mark of various concentration
Each volumetric flask is diluted to scale, shaken up by quasi- solution, and standard solution is made；
Step 3: establishing standard curve：Inductively coupled plasma atomic emission spectrometer is opened, after instrument stabilizer, selection
Aluminium, niobium, tungsten, chromium analysis spectral line, each element contains in each standard solution in input step two in device analysis software
Amount, sucks standard solution one by one, establishes calibrating curve equation；
Step 4: each element content in measurement testing sample solution：Sample to be tested quality is inputted in instrumentation software, to step
Element-intensities to be measured are measured in testing sample solution made from rapid one, and obtain the intensity of spectral line of each element, according to this
The intensity of spectral line, calculated automatically by instrument aluminium in sample, niobium, tungsten, chromium each element content, after sample measurement, selection and sample
The close standard sample of constituent content to be measured verifies result accuracy as control sample.
2. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：The concentration of tungsten standard solution is 100 μ g/L in step 2, and configuration method is：Draw the tungsten that 10mL concentration is 1000 μ g/L
National standard solution is diluted to scale in 100mL plastics volumetric flask, with 2% sodium hydrate aqueous solution, shakes up.
3. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：The concentration of chromium standard solution is 100 μ g/L in step 2, and configuration method is：Draw the chromium that 10mL concentration is 1000 μ g/L
National standard solution is diluted to scale with 10% hydrochloric acid solution, shakes up in 100 mL plastics volumetric flasks.
4. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：The purity of high purity titanium described in step 2 is 99.99%, and the purity of the rafifinal is 99.99%.
5. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：The series standard solution concentration gradient prepared in step 2 should cover smelting target value, and have 1 standard solution and smelt mesh
Scale value is close.
6. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：The running parameter of the inductively coupled plasma atomic emission spectrometer is：High frequency power is 1200W, nebulizer flow
For 0.7 L/min, plasma gas flow is 15.0 L/min, and auxiliary gas flow amount is 0.20 L/min, and observed direction is axis
To the light stability time is 15s, washing time 6s, delay time 20s, and measurement number is 2 times.
7. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：Aluminium described in step 3, niobium, tungsten, chromium analysis spectral line be respectively：Aluminium is 394.401 or 396.153nm, and niobium is
316.340 or 269.706nm, tungsten is 207.912 or 224.876nm, chromium are 283.563 or 267.716nm.
8. the measuring method of aluminium in a kind of high niobium aluminum titanium alloy according to claim 1, niobium, tungsten, chromium content, feature exist
In：Step 3 alignment curvilinear equation linearly dependent coefficient is not less than 0.995.
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| CN113063774A (en) * | 2021-03-12 | 2021-07-02 | 中航金属材料理化检测科技有限公司 | Method for measuring contents of multiple elements in titanium alloy |
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| CN116577318A (en) * | 2023-07-14 | 2023-08-11 | 宁德厦钨新能源材料有限公司 | Method for detecting tungsten element of coating in ternary material |
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