CN108931520A - The measuring method and its application of impurity iron content in a kind of zirconium aluminium powder - Google Patents
The measuring method and its application of impurity iron content in a kind of zirconium aluminium powder Download PDFInfo
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- CN108931520A CN108931520A CN201811189262.1A CN201811189262A CN108931520A CN 108931520 A CN108931520 A CN 108931520A CN 201811189262 A CN201811189262 A CN 201811189262A CN 108931520 A CN108931520 A CN 108931520A
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Abstract
The invention discloses the measuring methods and application of impurity iron content in a kind of zirconium aluminium powder, which is characterized in that the described method comprises the following steps: the volatile organic matter in S1, removal zirconium aluminium powder obtains sample to be tested；S2, the ferro element in sample to be tested is oxidized to Fe3+, it is prepared containing Fe3+Colorimetric test solution；S3, preparation comparison blank solution；S4, with photometric determination and calculating.It can detect the iron content in zirconium aluminium powder sensitive and accurately using the measuring method, it is easy to operate, the detection method is applied to microwave three, the detection application in tetreode to zirconium aluminium powder getter, the content of iron tramp is effectively detected, to guarantee the performance of microwave three, tetreode.
Description
Technical field
The present invention relates to a kind of measurement sides of impurity iron content in microwave vacuum device arts more particularly to zirconium aluminium powder
Method and its application.
Background technique
Microwave triode and microwave tetrode are the microwave tubes based on Electrostatic Control principle.Including lighthouse tube, disk seal
Pipe, pencil tube, UHF transmitting tube, plate triode and titanium ceramics triode etc., common operating frequency range be 300~
16000 megahertzs.
Microwave three, tetrode can generally work to 3000 megahertzs or more of frequency, and continuous wave power is in watt grade to tens
Watt, pulse power is from several hectowatts to thousands of watts of magnitudes.They are widely used in communication, navigation, beacon, fuse, telemetering, survey height
In the radio instruments equipment such as meter and microwave signal source.The spy that HIGH-POWERED MICROWAVES three, tetrode have high gain, power capacity big
Point, in decimeter range continuous wave power up to tens of kilowatt, pulse power is widely used in TV, radar up to megawatt magnitude
With the engineerings such as accelerator.
Getter refer to can the effectively preparation or device of certain (kind) gas molecules of sorption common name, for obtaining or tieing up
Hold vacuum and purified gases etc..Getter has the diversified forms such as powdery, disk like, band-like, tubulose, ring-type, cup-shaped.At each
It is fitted with multiple getters in microwave three, tetreode, for maintaining the vacuum degree in pipe, creates good work for pipe
Environment stablizes the characteristic parameters of pipe, and performance and service life to pipe have important influence.
In many microwaves three, tetreode usually the porous structure made of zirconium aluminium powder compacting sintering as the suction in pipe
Gas agent.Zirconium aluminium powder used in microwave three, tetreode is higher to the content requirement of impurity, contains polymictic zirconium aluminium powder sintering
Made of porous structure inspiratory effects it is poor, influence the performance of pipe, and iron tramp is one of major impurity in zirconium aluminium powder, microwave
Three, impurity chemical component (%) content requirement is as follows in zirconium aluminium powder used in tetreode: iron≤0.15, silicon≤0.01, and copper≤
0.01, zinc≤0.01, volatile materials≤2%.The invention discloses a kind of measurement sides of impurity iron content in measurement zirconium aluminium powder
Method, it is easy to use, it is cheap, it can be completed in microwave tube chemical treatment plant.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of measurement sides of impurity iron content in zirconium aluminium powder
Method and its application can detect the iron content in zirconium aluminium powder using the measuring method sensitive and accurately, easy to operate, by the inspection
Survey method is applied to microwave three, the detection application in tetreode to zirconium aluminium powder getter, effectively detects the content of iron tramp, thus
Guarantee the performance of microwave three, tetreode.
The measuring method of impurity iron content in a kind of zirconium aluminium powder proposed by the present invention, the described method comprises the following steps:
Volatile organic matter in S1, removal zirconium aluminium powder, obtains sample to be tested；
S2, the ferro element in sample to be tested is oxidized to Fe3+, it is prepared containing Fe3+Colorimetric test solution；
S3, preparation comparison blank solution；
S4, with photometric determination and calculating: trivalent is added dropwise into colorimetric test solution and comparison blank solution respectively
Iron indicator keeps ferric iron concentration of indicator equal, then measures the comparison blank solution dropwise addition standard iron solution of M volume, until right
Than the solid colour of blank solution and colorimetric test solution, standard iron solution volume V be added dropwise is recorded, is calculated according to the following formula
The percentage of iron content:
Wherein, in T -1ml standard solution iron content (g)；Zirconium aluminium needed for d-prepares the colorimetric test solution of M volume
Powder weight (g).
Preferably, in step S2, detailed process is as follows: the sample to be tested being dissolved completely in acid solution, with laggard
Row evaporative crystallization is dissolved in pure water after taking crystallized product to be cooled to room temperature, obtains aqueous metal solution, into the aqueous metal solution
Acid solution is added to aqueous metal solution in acidity, adds liquor potassic permanganate and oxidizes iron into Fe3+, obtain the colorimetric test
Solution.
Preferably, drop orange 4 is first added dropwise into aqueous metal solution, then add the acid supplemented solution and Gao Meng in step S2
Sour potassium solution, until the liquor potassic permanganate is added to aqueous metal solution pinkiness.It can be added dropwise dropwise if color is too deep
Hydrogen peroxide decomposes potassium permanganate.
Preferably, comparing the preparation for comparing blank solution in the preparation process and step S2 of blank solution in step S3
Journey is consistent, and difference is, does not add zirconium aluminium powder in step S3.
Preferably, the aqueous metal solution concentration is 0.01-0.1g/ml；The acid solution is hydrochloric acid.
Preferably, after ferric iron indicator is added dropwise, respectively by colorimetric test solution and comparison blank solution filtering, for the first time
It obtains outwelling after 50-60ml filtrate not having to, continues the colorimetric filtrates tested and comparison blank filter that measure isometric M after filtering respectively
Standard iron solution is added dropwise into the comparison blank filtrate of M volume in liquid, until the colorimetric filtrates tested of comparison blank filtrate and M volume
Solid colour.
Preferably, the ferric iron concentration of indicator is 0.005-0.02wt%, the ferric iron indicator is sulfo group
Salicylic acid.
Preferably, the volume M is 50-60ml, the percentage of three groups of iron contents is calculated three times, is averaged for measurement
Value.
Preferably, in step S1, by zirconium aluminium powder carbon tetrachloride filtration washing, after the completion of washing at 80-100 DEG C
It is 20-50 minutes dry, obtain sample to be tested.
Detection application of the measuring method of impurity iron content on microwave three, the effective getter of level Four in a kind of zirconium aluminium powder.
First by the impurity iron element oxide in zirconium aluminium powder at ferrous ion in technical solution of the present invention, add strong
Oxidant potassium permanganate further oxidizes divalent iron ions into ferric ion, addition drop orange 4 in oxidation process, convenient for seeing
The additive amount of acid and potassium permanganate is examined to guarantee that addition is appropriate, after preparing colorimetric test solution, passes through design blank solution examination
Sample makees indicator in the sulfosalicylic acid that colorimetric tests addition comparable sodium in solution and blank solution sample, with known concentration
Standard iron solution be added drop-wise in blank solution sample, keep the colour developing of two kinds of samples consistent, calculate in blank solution sample
Iron content then calculates the iron content in aluminium powder thus according to formula.Using technical solution of the present invention, can quickly detect
Iron content in aluminium powder, entire detection method is easy to operate, and the detection method and related reagent that use are swift in response, and phenomenon is bright
It is aobvious to be easy to observe and judge, it thereby ensures that the accuracy of detection, the iron that mass concentration is lower than 0.15% can be effectively detected
The detection method is applied to microwave three, level Four so that the quality standard for zirconium aluminium powder getter provides judgment basis by content
To the detection application of zirconium aluminium powder getter in pipe, the content of iron tramp is effectively detected, to guarantee the property of microwave three, tetreode
Energy.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.Agents useful for same of the present invention is uniform
Routine test or commercially available gained.In the present invention, it configures reagent and all uses distilled water and chemically pure reagent (to change when being analyzed
Learn pure reagent, outer literary fame: Chemically Pure, referred to as: CP is the pureness specifications of chemical reagent, belongs to three-level product, label
For middle indigo plant).
Embodiment 1
The measuring method of impurity iron content in a kind of zirconium aluminium powder, the described method comprises the following steps:
S1, by zirconium aluminium powder carbon tetrachloride filtration washing, after the completion of washing dry 20 minutes at 100 DEG C, obtain to
Test specimens；
S2, the sample to be tested is dissolved completely in hydrochloric acid, is then evaporated crystallization, crystallized product is taken to be cooled to room
It is dissolved in pure water after temperature, obtains the aqueous metal solution that concentration is 0.1g/ml, drop orange 4 is first added dropwise into aqueous metal solution, to institute
It states and hydrochloric acid is added in aqueous metal solution to aqueous metal solution in acidity, add liquor potassic permanganate and oxidize iron into Fe3+, described
Until liquor potassic permanganate is added to aqueous metal solution pinkiness, hydrogen peroxide can be added dropwise dropwise if color is too deep to decompose
Potassium permanganate obtains the colorimetric test solution；Hydrogen peroxide can be added dropwise dropwise if color is too deep to decompose potassium permanganate；
S3, preparation comparison blank solution: the system that blank solution is compared in the preparation process and step S2 of blank solution is compared
Standby process is consistent, and difference is, does not add zirconium aluminium powder in step S3；
S4, with photometric determination and calculating: concentration is added dropwise into colorimetric test solution and comparison blank solution respectively
For the sulfosalicylic acid of 0.02wt%, keep sulfosalisylic acid concentration equal, respectively by colorimetric test solution and comparison blank solution
Filtering obtains outwelling after 60ml filtrate for the first time not having to, continue the colorimetric filtrates tested for measuring isometric 60ml after filtering respectively and
Blank filtrate is compared, standard iron solution is added dropwise into the comparison blank filtrate of 60ml volume, until comparison blank filtrate and 60ml body
The solid colour of long-pending colorimetric filtrates tested records standard iron solution volume V be added dropwise, iron content is calculated according to the following formula
Percentage:
Wherein, in T -1ml standard solution iron content (g)；D-is prepared needed for the colorimetric test solution of 60ml volume
Zirconium aluminium powder weight (g).
Above-mentioned steps S1, S2, S3 and S4 are carried out repeating to test three times, calculates separately and show that three groups of iron contents are
0.110%, 0.105% and 0.096%, being averaged to obtain in embodiment 1 impurity iron content in zirconium aluminium powder is 0.104%.
Detection application of the measuring method of impurity iron content on microwave three, the effective getter of level Four in zirconium aluminium powder, according to
The iron content of the zirconium aluminium getter is qualified known to data judgement.
Embodiment 2:
The measuring method of impurity iron content in a kind of zirconium aluminium powder, the described method comprises the following steps:
S1, by zirconium aluminium powder carbon tetrachloride filtration washing, after the completion of washing dry 50 minutes at 80 DEG C, obtain to be measured
Sample；
S2, the sample to be tested is dissolved completely in hydrochloric acid, is then evaporated crystallization, crystallized product is taken to be cooled to room
It is dissolved in pure water after temperature, obtains the aqueous metal solution that concentration is 0.01g/ml, drop orange 4 is first added dropwise into aqueous metal solution, to
Hydrochloric acid is added in the aqueous metal solution to aqueous metal solution in acidity, adds liquor potassic permanganate and oxidizes iron into Fe3+, institute
It states until liquor potassic permanganate is added to aqueous metal solution pinkiness, hydrogen peroxide can be added dropwise dropwise if color is too deep to divide
Potassium permanganate is solved, the colorimetric test solution is obtained；Hydrogen peroxide can be added dropwise dropwise if color is too deep to decompose potassium permanganate；
S3, preparation comparison blank solution: the system that blank solution is compared in the preparation process and step S2 of blank solution is compared
Standby process is consistent, and difference is, does not add zirconium aluminium powder in step S3；
S4, with photometric determination and calculating: concentration is added dropwise into colorimetric test solution and comparison blank solution respectively
For the sulfosalicylic acid of 0.005wt%, keep sulfosalisylic acid concentration equal, respectively by colorimetric test solution and comparison blank solution
Filtering obtains outwelling after 50ml filtrate for the first time not having to, continue the colorimetric filtrates tested for measuring isometric 50ml after filtering respectively and
Blank filtrate is compared, standard iron solution is added dropwise into the comparison blank filtrate of 50ml volume, until comparison blank filtrate and 50ml body
The solid colour of long-pending colorimetric filtrates tested records standard iron solution volume V be added dropwise, iron content is calculated according to the following formula
Percentage:
Wherein, in T -1ml standard solution iron content (g)；D-is prepared needed for the colorimetric test solution of 50ml volume
Zirconium aluminium powder weight (g).
Above-mentioned steps S1, S2, S3 and S4 are carried out repeating to test three times, calculates separately and show that three groups of iron contents are
0.211%, 0.214% and 0.202%, being averaged to obtain in embodiment 2 impurity iron content in zirconium aluminium powder is 0.209%.
Detection application of the measuring method of impurity iron content on microwave three, the effective getter of level Four in zirconium aluminium powder, according to
The iron content of the zirconium aluminium getter is exceeded known to data judgement.
Embodiment 3
The measuring method of impurity iron content in a kind of zirconium aluminium powder, the described method comprises the following steps:
S1, zirconium aluminium powder is placed in the funnel or crucible for being lined with porous filter plate, is rinsed 4 times, will be rushed with carbon tetrachloride
It after carbon tetrachloride after washing is filtered dry only, is put into baking oven, it is spare that taking-up in 30 minutes is toasted at 90 DEG C；
S2, prepare reagent: reagent is based on mass concentration, including 38% hydrochloric acid, 0.1% orange 4 aqueous solution, 0.05%
Liquor potassic permanganate, 3% hydrogenperoxide steam generator, 20% sulfosalisylic aqueous acid and standard iron it is molten；The colorimetric is surveyed
Trying solution preparation, specific step is as follows: dividing 4 hydrochloric acid for injecting 60ml altogether in the round-bottomed flask of 500ml, to zirconium aluminium
Evaporative crystallization (less than degree of drying) is carried out after powder dissolution, the product after then making crystallization is cooled to room temperature, will be after cooling
Product dissolves in 100ml pure water, adds 3 drops orange 4 and obtains mixed solution, is added to after the hydrochloric acid and water are diluted by 1:9
The mixed solution, in acidity, obtains acid solution to mixed solution；The acid solution is poured into in graduated beaker,
5 drop liquor potassic permanganates are added in oxytropism solution until acid solution is in stable pink, obtain pink solution；To
10ml sulfosalisylic acid solution is injected in the pink solution, is added at pure water to the 200ml of beaker scale, and stir, colorimetric
Test solution；It filters out 55ml colorimetric test solution with dry filter paper to be placed in dry beaker for use, the 55ml filtered out for the first time
Solution, which is outwelled, not to be had to, with the 55ml solution filtered out for the second time；
S3, the preparation process for comparing blank solution are consistent with the preparation process of blank solution is compared in step S2, and difference exists
In zirconium aluminium powder is not added in step S3, obtains the comparison blank solution of 55ml；
S4, colorimetric estimation is carried out with photometer: being 20ml in volume, have in the graduated cylinder of ground stopper and be measured, in cylinder
It injects 20ml colorimetric and tests solution, injection comparison blank solution in another graduated cylinder, it is several milliliters few that amount should test solution compared with colorimetric
And a few drop standard iron solutions need to be added, until color and colorimetric test solution are consistent, a little blank solutions are then added and make two
The volume of solution is equal in graduated cylinder, records standard iron solution volume V be added dropwise, the percentage of iron content is calculated according to the following formula
Than:
Wherein, in T -1ml standard solution iron content (g)；D-is prepared needed for the colorimetric test solution of 55ml volume
Zirconium aluminium powder weight (g).
Above-mentioned steps S1, S2, S3 and S4 are carried out repeating to test three times, calculates separately and show that three groups of iron contents are
0.380%, 0.374% and 0.384%, being averaged to obtain in embodiment 3 impurity iron content in zirconium aluminium powder is 0.379%.
Detection application of the measuring method of impurity iron content on microwave three, the effective getter of level Four in zirconium aluminium powder, according to
The iron content of the zirconium aluminium getter is exceeded known to data judgement.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. the measuring method of impurity iron content in a kind of zirconium aluminium powder, which is characterized in that the described method comprises the following steps:
Volatile organic matter in S1, removal zirconium aluminium powder, obtains sample to be tested；
S2, the ferro element in sample to be tested is oxidized to Fe3+, it is prepared containing Fe3+Colorimetric test solution；
S3, preparation comparison blank solution；
S4, with photometric determination and calculating: ferric iron is added dropwise into colorimetric test solution and comparison blank solution respectively and refers to
Show agent, keep ferric iron concentration of indicator equal, then measure the comparison blank solution dropwise addition standard iron solution of M volume, until comparison is empty
The solid colour of white solution and colorimetric test solution, records standard iron solution volume V be added dropwise, iron is calculated according to the following formula and contains
The percentage of amount:
Wherein, in T -1ml standard solution iron content (g)；Zirconium aluminium powder weight needed for d-prepares the colorimetric test solution of M volume
It measures (g).
2. according to claim 1 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that specific mistake in step S2
Journey is as follows: the sample to be tested being dissolved completely in acid solution, crystallization is then evaporated, crystallized product is taken to be cooled to room temperature
After be dissolved in pure water, obtain aqueous metal solution, into the aqueous metal solution be added acid solution to aqueous metal solution in acidity, then
Liquor potassic permanganate is added and oxidizes iron into Fe3+, obtain the colorimetric test solution.
3. according to claim 2 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that in step S2, first to
Drop orange 4 is added dropwise in aqueous metal solution, then adds the acid supplemented solution and liquor potassic permanganate, the liquor potassic permanganate is added to
Until aqueous metal solution pinkiness.
4. according to claim 2 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that compared in step S3 empty
The preparation process of white solution is consistent with the comparison preparation process of blank solution in step S2, and difference is, does not add in step S3
Zirconium aluminium powder.
5. according to claim 2 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that the aqueous metal solution
Concentration is 0.01-0.1g/ml；The acid solution is hydrochloric acid.
6. according to claim 4 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that be added dropwise ferric iron instruction
After agent, respectively by colorimetric test solution and comparison blank solution filtering, obtains outwelling after 50-60ml filtrate for the first time not having to, continue
Colorimetric filtrates tested and the comparison blank filtrate for measuring isometric M after filtering respectively, are added dropwise into the comparison blank filtrate of M volume
Standard iron solution, until the solid colour of the colorimetric filtrates tested of comparison blank filtrate and M volume.
7. according to claim 4 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that ferric iron instruction
Agent concentration is 0.005-0.02wt%, and the ferric iron indicator is sulfosalicylic acid.
8. according to claim 6 in zirconium aluminium powder impurity iron content measuring method, which is characterized in that the volume M be 50-
60ml；The percentage of three groups of iron contents is calculated in measurement three times, is averaged.
9. according to claim 1 in zirconium aluminium powder described in -8 any one impurity iron content measuring method, which is characterized in that step
In S1, by zirconium aluminium powder carbon tetrachloride filtration washing, after the completion of washing dry 20-50 minutes at 80-100 DEG C, obtain to
Test specimens.
10. the measuring method of impurity iron content is in microwave three, the effective air-breathing of level Four in a kind of zirconium aluminium powder according to claim 1
Detection application in agent.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323228A (en) * | 2011-06-22 | 2012-01-18 | 恒正科技（苏州）有限公司 | The assay method of ferrous iron and ferric iron content in the lithium iron phosphate cathode material |
| CN104597037A (en) * | 2015-01-09 | 2015-05-06 | 江苏省沙钢钢铁研究院有限公司 | Method for determining zirconium content in silicon-zirconium alloy |
-
2018
- 2018-10-12 CN CN201811189262.1A patent/CN108931520A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323228A (en) * | 2011-06-22 | 2012-01-18 | 恒正科技（苏州）有限公司 | The assay method of ferrous iron and ferric iron content in the lithium iron phosphate cathode material |
| CN104597037A (en) * | 2015-01-09 | 2015-05-06 | 江苏省沙钢钢铁研究院有限公司 | Method for determining zirconium content in silicon-zirconium alloy |
Non-Patent Citations (3)
| Title |
|---|
| 容蓉: "《仪器分析 第1版》", 31 December 2014, 北京：中国医药科技出版社 * |
| 张杏芬: "《国外火炸药原材料手册 第1版》", 31 December 1991, 兵器工业出版社 * |
| 张柱: ""磺基水杨酸法用于总铁含量的测定"", 《科技论坛》 * |
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Application publication date: 20181204 |