CN109507005A - Vananum metallographic etching agent and caustic solution - Google Patents
Vananum metallographic etching agent and caustic solution Download PDFInfo
- Publication number
- CN109507005A CN109507005A CN201811449598.7A CN201811449598A CN109507005A CN 109507005 A CN109507005 A CN 109507005A CN 201811449598 A CN201811449598 A CN 201811449598A CN 109507005 A CN109507005 A CN 109507005A
- Authority
- CN
- China
- Prior art keywords
- vananum
- metallographic
- polishing
- water
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01N1/32—Polishing; Etching
-
- 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
-
- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- 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
- G01N21/84—Systems specially adapted for particular applications
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- ing And Chemical Polishing (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The present invention relates to vananum metallographic etching agent and caustic solutions, belong to vananum metallographic specimen preparation technical field.To be solved by this invention is to lack aiming at the problem that metallographic etching agent of vananum in the prior art, and there is provided vananum metallographic etching agents for technical solution, are grouped as by the group of following mass percents: HF 1.3~2.3%, HNO34.5~9.0%, surplus is water.Using metallographic etching agent provided by the invention, it can efficiently corrode the metallographic structure of vananum out, metallographic structure shows that clearly crystal grain is shown completely, provides great convenience for the generation technology controlling and process of vananum and the examination and test of products.
Description
Technical field
The present invention relates to vananum metallographic etching agent and caustic solutions, belong to vananum metallographic specimen technology of preparing neck
Domain.
Background technique
Vananum appearance is blocky in silver gray metallic luster.Increase with content of vanadium in alloy, metallic luster enhancing,
Hardness increases, and oxygen content improves.Vananum is intermediate alloy, mainly as production titanium alloy, the intermediate alloy of high temperature alloy
And the element additive of certain specific alloys.In addition, vananum is a kind of advanced alloy for being widely used in aerospace field
Material, has very high hardness, elasticity, sea water resistance, slim and graceful, for manufacturing seaplane and sea glider.
In vananum research, the difference of material composition and heat treatment process can obtain different types of metallographic structure,
Lead to the difference of the performance of alloy.In order to obtain the alloy of required performance, needs to observe the metallographic structure of alloy, tie
Performance data is closed, adjusts ingredient, the heat treatment process etc. of alloy in time.However, having not yet to see vananum metallographic etching agent
Research report, to production and inspection body bring very big difficulty.
Summary of the invention
The purpose of the present invention is to provide vananum metallographic etching agent and caustic solutions, to solve to lack in the prior art
Aiming at the problem that metallographic etching agent of vananum.
The present invention provides vananum metallographic etching agents, are grouped as by the group of following mass percents: HF1.3~
2.3%, HNO34.5~9.0%, surplus is water.
Further, the corrosive agent is grouped as by the group of following mass percents: HF 1.3~2.3%,
HNO34.5%, surplus is water.
Further, the vananum is AlV55 alloy, AlV65 alloy, AlV75 alloy or AlV85 alloy.
Further, the water is distilled water.
The present invention provides the preparation method of the corrosive agent, include the following steps: that proportionally adding water to preparation holds
In device, HNO is then sequentially added3And HF, it is uniformly mixed.
Further, the preparation method meets at least one of following:
HNO3It is added in the form of 65%w/w nitric acid；
HF is added in the form of 40%w/w hydrofluoric acid.
The present invention provides the caustic solutions of vananum sample: the vananum sample immersion by polishing is described
In corrosive agent.
Further, etching time is 10~15 seconds.
The present invention provides the preparation methods of vananum metallographic specimen, in turn include the following steps: the embedding sample of hot insert,
Grind on metallographic pre-mill, polished on polishing machine, using the caustic solution corroded to get.
Further, the preparation method of the vananum metallographic specimen meets at least one of following:
Successively ground with 120#, 400#, 800#, 1200# waterproof abrasive paper；
Rough polishing and fine polishing are successively carried out on polishing machine, wherein rough polishing uses canvas, and finishing polish uses woollen goods
Cloth；
Rough polishing photocontrol polishing disk rotating speed is 800~1000rad/min；
The rough polishing time is 2~3 minutes；
The antiscuffing paste granularity that rough polishing uses is 1.5~5 μm；
Preferably, the antiscuffing paste granularity that rough polishing uses is 2.5 μm；
The lubricant that rough polishing uses is water；
It is 600~800rad/min that finishing polish, which controls polishing disk rotating speed,；
The finishing polish time is 1~2 minute；
The antiscuffing paste granularity that finishing polish uses is 0.25~1 μm；
Preferably, the antiscuffing paste granularity that finishing polish uses is 0.5 μm；
The lubricant that finishing polish uses is water.
The present invention provides vananum metallographic etching agent and caustic solutions, can efficiently corrode the metallographic of vananum out
Tissue, metallographic structure show that clearly crystal grain is shown completely, provide pole for the generation technology controlling and process of vananum and the examination and test of products
Convenience.
Detailed description of the invention
Fig. 1 is the metallographic structure figure of AlV55 alloy after embodiment 1 is corroded；
Fig. 2 is the metallographic structure figure of AlV65 alloy after embodiment 2 is corroded.
Specific embodiment
Raw material, equipment used in the specific embodiment of the invention are known product, are obtained by purchase commercial product.
The present invention provides vananum metallographic etching agents, are grouped as by the group of following mass percents: HF1.3~
2.3%, HNO34.5~9.0%, surplus is water.
Currently, can efficiently corrode the metallographic etching agent of vananum due to lacking, the metallographic specimen being prepared often is deposited
The problems such as metallographic structure is unintelligible, crystal grain is imperfect, to the research of vananum, especially investigation alloying component, heat treatment
Influence of the technique to alloy property brings very big inconvenience.
For above situation, the present invention creatively provides a kind of metallographic etching agent suitable for vananum.Using
Metallographic etching agent provided by the invention can efficiently corrode the metallographic structure of vananum out, and metallographic structure is shown clearly, crystal grain
Display is complete, provides great convenience for the generation technology controlling and process of vananum and the examination and test of products.
The preparation of the corrosive agent of the present invention of embodiment 1 and the corrosion of vananum sample
Vananum sample to be corroded is prepared by the following method to obtain:
1, wire cutting takes suitable smooth vananum sample.
2, the embedding sample of hot insert.
3, sample is placed on metallographic pre-mill carry out corase grinding and fine grinding, grinding process pass through respectively 120#, 400#,
800#, 1200# waterproof abrasive paper are ground, and need in grinding process plus water is cooling, when replacing sand paper every time, grind direction and upper passage is drawn
Trace direction is vertical, completes to grind together when scratch direction is all consistent, final extremely shallow and surface-brightening the examination of acquisition scratch
Sample.
4, sample is put on polishing machine and carries out first time rough polishing and second of finishing polish.First time rough polishing, polishing
Cloth use canvas, polishing disk rotating speed be 800~1000rad/min, polishing time 2~3 minutes, 2.5 μm of antiscuffing paste granularity selection,
Lubricant selects tap water.Second of finishing polish, polishing cloth use woollen goods cloth, and polishing disk rotating speed is 600~800rad/min, throw
1~2 minute between light time, 0.5 μm of antiscuffing paste granularity selection, lubricant selects tap water.It is intended to after with originally before polishing
Water rinses polishing cloth, to remove remaining antiscuffing paste and foul.
By aforesaid operations step, vananum sample to be corroded is obtained.
The preparation method of metallographic etchant: at room temperature, distilled water 92ml is measured with graduated cylinder and is poured into flask, then with graduated cylinder amount
Taking 3ml hydrofluoric acid (mass percent concentration 40%, density 1.13g/ml) and 5ml nitric acid, (mass percent concentration is
65%, density 1.39g/ml) be gently mixed with glass bar make solution be uniformly mixed, set aside for use.
Vananum AlV55 sample after polishing is immersed in the metallographic etching agent prepared, the etch time is 10~15
Second, the complete taking-up sample of etch is clean with dehydrated alcohol repeated flushing, dries or electricity consumption blowing drying is to get to the vanadium to be observed
The metallographic structure of aluminum alloy specimen.See Fig. 1.As seen from Figure 1, metallographic etching agent of the present invention can efficiently corrode vananum out
The metallographic structure of AlV55, metallographic structure show that clearly, crystal grain is shown completely.
The preparation of the corrosive agent of the present invention of embodiment 2 and the corrosion of vananum sample
The preparation method is the same as that of Example 1 for vananum sample to be corroded.
The preparation method of metallographic etchant: at room temperature, distilled water 90ml is measured with graduated cylinder and is poured into flask, then with graduated cylinder amount
Take 5ml hydrofluoric acid (mass percent concentration 40%) and 5ml nitric acid (mass percent concentration 65%) with glass bar gently
Stirring is uniformly mixed solution, set aside for use.
Vananum AlV65 sample after polishing is immersed in the metallographic etching agent prepared, the etch time is 10~15
Second, the complete taking-up sample of etch is clean with dehydrated alcohol repeated flushing, dries or electricity consumption blowing drying is to get to the vanadium to be observed
The metallographic structure of aluminum alloy specimen.See Fig. 2.From Figure 2 it can be seen that metallographic etching agent of the present invention can efficiently corrode vananum out
The metallographic structure of AlV65, metallographic structure show that clearly, crystal grain is shown completely.
Claims (10)
1. vananum metallographic etching agent, it is characterized in that: being grouped as by the group of following mass percents: HF1.3~2.3%,
HNO34.5~9.0%, surplus is water.
2. corrosive agent as described in claim 1, it is characterized in that: being grouped as by the group of following mass percents: HF 1.3~
2.3%, HNO34.5%, surplus is water.
3. corrosive agent as claimed in claim 1 or 2, it is characterized in that: the vananum be AlV55 alloy, AlV65 alloy,
AlV75 alloy or AlV85 alloy.
4. the corrosive agent as described in claims 1 to 3 any one, it is characterized in that: the water is distilled water.
5. the preparation method of corrosive agent described in Claims 1 to 4 any one, it is characterized in that: including the following steps: proportionally
It adds water to in container, then sequentially adds HNO3And HF, it is uniformly mixed.
6. preparation method as claimed in claim 5, it is characterized in that: meeting at least one of following:
HNO3It is added in the form of 65%w/w nitric acid；
HF is added in the form of 40%w/w hydrofluoric acid.
7. the caustic solution of vananum sample, it is characterized in that: the vananum sample immersion claim 1 that process is polished~
In corrosive agent described in 4 any one.
8. caustic solution as claimed in claim 7, it is characterized in that: etching time is 10~15 seconds.
9. the preparation method of vananum metallographic specimen, it is characterized in that: in turn including the following steps: the embedding sample of hot insert, in metallographic
Grind on pre-mill, polished on polishing machine, using caustic solution described in claim 7 or 8 corroded to get.
10. preparation method as claimed in claim 9, it is characterized in that: meeting at least one of following:
Successively ground with 120#, 400#, 800#, 1200# waterproof abrasive paper；
Rough polishing and fine polishing are successively carried out on polishing machine, wherein rough polishing uses canvas, and finishing polish uses woollen goods cloth；
Rough polishing photocontrol polishing disk rotating speed is 800~1000rad/min；
The rough polishing time is 2~3 minutes；
The antiscuffing paste granularity that rough polishing uses is 1.5~5 μm；
Preferably, the antiscuffing paste granularity that rough polishing uses is 2.5 μm；
The lubricant that rough polishing uses is water；
It is 600~800rad/min that finishing polish, which controls polishing disk rotating speed,；
The finishing polish time is 1~2 minute；
The antiscuffing paste granularity that finishing polish uses is 0.25~1 μm；
Preferably, the antiscuffing paste granularity that finishing polish uses is 0.5 μm；
The lubricant that finishing polish uses is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449598.7A CN109507005A (en) | 2018-11-28 | 2018-11-28 | Vananum metallographic etching agent and caustic solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449598.7A CN109507005A (en) | 2018-11-28 | 2018-11-28 | Vananum metallographic etching agent and caustic solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109507005A true CN109507005A (en) | 2019-03-22 |
Family
ID=65751375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811449598.7A Pending CN109507005A (en) | 2018-11-28 | 2018-11-28 | Vananum metallographic etching agent and caustic solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109507005A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240934A (en) * | 2018-01-19 | 2018-07-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium iron sample and preparation method thereof and vanadium iron metallographic etching agent |
| CN108240933A (en) * | 2017-12-11 | 2018-07-03 | 囯网河北省电力有限公司电力科学研究院 | A kind of high-purity aluminium microstructure morphology etchant and corrosion method |
| CN108663257A (en) * | 2018-05-03 | 2018-10-16 | 江阴法尔胜佩尔新材料科技有限公司 | A kind of metallographic etching agent and method for displaying metallographic structure of Nitinol |
-
2018
- 2018-11-28 CN CN201811449598.7A patent/CN109507005A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240933A (en) * | 2017-12-11 | 2018-07-03 | 囯网河北省电力有限公司电力科学研究院 | A kind of high-purity aluminium microstructure morphology etchant and corrosion method |
| CN108240934A (en) * | 2018-01-19 | 2018-07-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium iron sample and preparation method thereof and vanadium iron metallographic etching agent |
| CN108663257A (en) * | 2018-05-03 | 2018-10-16 | 江阴法尔胜佩尔新材料科技有限公司 | A kind of metallographic etching agent and method for displaying metallographic structure of Nitinol |
Non-Patent Citations (3)
| Title |
|---|
| GUO-CHAO LI ET AL.: "Microstructure and properties of a novel titanium alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si manufactured by laser additive manufacturing", 《MATERIALS SCIENCE & ENGINEERING A》 * |
| LUTHER M.GAMMON ET AL.: "Metallography and microstructures of Titanium and its alloys", 《ASM HANDBOOL》 * |
| 韩德伟: "《金属学实验指导书》", 31 March 1990, 中南工业大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101880881B (en) | High aluminum zinc alloy etching agent and use method thereof | |
| CN105092437B (en) | Ultra supercritical martensite heat resisting cast steel original austenite grains degree display methods | |
| CN102890027B (en) | Metallographic structure display method of interstitial free (IF) steel cold-rolled sheet containing titanium (Ti) | |
| CN101701886A (en) | Metallographical corrosive, method for eroding copper and method for displaying metallographical organization of copper | |
| CN102879254B (en) | Hot-dipping aluminum-zinc alloy coated steel plate coating structure display method | |
| CN104513985A (en) | Nickel-chromium alloy metallographic corrosion solution and corrosion method | |
| CN104562012A (en) | Iron-base high-temperature alloy sample metallographic etching solution and etching method | |
| CN104878389A (en) | Pure-nickel metallographic etchant and corroding method using same | |
| CN105839111A (en) | Mechanical polishing solution for preparing EBSD sample, preparation method and mechanical polishing method | |
| CN109470728A (en) | A kind of titanium alloy pendulum grinds the preparation method of part metallographic specimen | |
| CN102252888A (en) | Preparation and tissue display method of ultralow carbon ultrathin cold heading steel wire metallographical sample | |
| CN103993319A (en) | Corrosive agent and display method for macrostructure of aluminum and aluminum copper alloys | |
| CN103335877B (en) | A kind of method preparing metal thin film metallographic structure sample | |
| CN107941582A (en) | A kind of metallographic specimen preparation method | |
| CN105177579A (en) | Method for corrosion of Ni-Mn-Si-Cr alloy | |
| CN111979547A (en) | Metallographic corrosive agent for nickel-based alloy and use method thereof | |
| CN110983338A (en) | Metallographic corrosive agent and corrosion method for molybdenum or molybdenum alloy and display method of metallographic structure | |
| CN105177577A (en) | Corrosion method for small-specification red copper rod | |
| CN110389129A (en) | Corrosive agent for displaying 690 nickel-based alloy deposited metal grain boundary and etching method thereof | |
| CN110954388A (en) | Metallographic corrosive agent for laser cladding layer of titanium alloy containing rare earth and tissue display method | |
| CN110118778A (en) | A kind of medium carbon steel ferrite metallographic etching agent and ferritic structure metallographic phase display method | |
| CN112362437B (en) | Metallographic etching agent and metallographic structure display method | |
| CN105018932B (en) | A kind of Ni80Cr20 alloy rolled sheets metallographic etchant and its compound method and application method | |
| CN106769354B (en) | Polishing method for aluminium alloy metallographic specimen | |
| CN109468640A (en) | A kind of SNCrW stainless steel metallographic etchant and its preparation method and application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |
|
| RJ01 | Rejection of invention patent application after publication |