CN109342688A - A kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent and caustic solution - Google Patents
A kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent and caustic solution Download PDFInfo
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- CN109342688A CN109342688A CN201811093634.0A CN201811093634A CN109342688A CN 109342688 A CN109342688 A CN 109342688A CN 201811093634 A CN201811093634 A CN 201811093634A CN 109342688 A CN109342688 A CN 109342688A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention belongs to metal material metallographic structure representational field, it is related to a kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent and caustic solution.The corrosive liquid that the present invention uses uniformly mixes for the equivalent solution of potassium permanganate and sodium hydroxide, and corrosive agent is heated to boiling, and will immerse in corrosive liquid by mechanical polishing and the sample of polishing under fluidized state, carries out the corrosion of arborescent structure.Since as-cast specimen is different with the corrosion resistance of heat treatment sample, the etching time of different conditions sample has been respectively provided in the present invention.Corrosive agent composition in the present invention is simple, and only two kinds of components of potassium permanganate and sodium hydroxide, configuration proportion 1:1, process for preparation are simple.The CoCrMo alloy branch crystal tissue corroded using this method is clear and accurate, and the interdendritic regions for being enriched with solution strengthening element are corroded.
Description
Technical field
The invention belongs to metal material metallographic structure representational fields, are related to a kind of joint prosthesis CoCrMo alloy branch crystal group
Knit corrosive agent and caustic solution.
Background technique
CoCrMo alloy is since it is with good biocompatibility and intensity, it has also become ideal artificial in clinic
Joint main material, and it is widely used in the surgical implants such as metal hip joint aspect, it is frequently occurred in engineer application
The phenomenon that alloy-steel casting is scrapped since room temperature tensile properties are unqualified.Since the microscopic structure in alloy determines mechanical property
Can, and casting technique can to a certain extent have an impact microscopic structure, therefore study microstructure mechanical property and casting
The relationship between technique is made, is had great significance for optimization casting technique, stable mechanical property.
Currently, to have ten several for steel and nickel base superalloy arborescent structure corrosive agent, but these corrosive agent can not corrode
The arborescent structure of CoCrMo alloy, main cause are steel generally using Fe as matrix, the elements such as Cr, W, Si, Mn are added, wherein playing master
It wants the Cr constituent content of antisepsis to be usually no more than 15% or so, mainly mutually there is austenite, ferrite, martensite etc..Nickel
Using Ni as matrix the elements such as Cr, Co, W, Mo, Al, Ti, Nb are added as intensified element in based high-temperature alloy, wherein Co and Cr element
Content is usually no more than 13% and 20%, and main is mutually γ phase, γ ' phase and carbide.And CoCrMo alloy is using Co as base
Body, Co content are up to 65%, Cr content and are up to 29%, and the microscopic structure of the alloy is different from nickel-base alloy, in CoCrMo alloy
The only Carbide Phases of γ phase and precipitation strength, thus CoCrMo alloy have it is more more excellent than steel and nickel base superalloy resistance to
Corrosivity shows its arborescent structure entirely without method using the corrosive agent and caustic solution of steel or nickel base superalloy.
Summary of the invention
A kind of method that can corrode CoCrMo alloy branch crystal tissue is invented the object of the present invention is to study, for studying
Relationship between microstructure mechanical property and casting technique, guidance engineering production.
Technical solution of the present invention:
The composition of corrosive agent be concentration be 8% liquor potassic permanganate, concentration be 20% sodium hydroxide solution, with 1:1
Proportion be configured to corrosive liquid.
It is with the joint prosthesis with the method that CoCrMo alloy branch crystal tissue corrosive agent is corroded,
1) prepared by sample
Sample is carried out in strict accordance with metallographic specimen preparation process, with silicon carbide paper from 120# mechanical polishing to 1200~
1500#, clear water rinses after then mechanically polishing to surface no marking, stand-by after being dried up with alcohol washes；
2) caustic solution
The beaker equipped with corrosive agent is heated with heating furnace, starts to corrode after corrosive agent comes to life, uses clip
Sample is clamped, the corrosion of sample is placed in the corrosive agent of boiling up, shakes gently sample, when sample is as-cast specimen
When, etching time is 30~60 seconds, and when sample is heat treatment state sample, etching time is 150~240 seconds；
3) after corroding, with alcohol wipe erosional surface, the observation of arborescent structure can be carried out after drying under the microscope.
The present invention has the advantage that and beneficial effect,
The corrosive liquid that the present invention uses uniformly mixes for the equivalent solution of potassium permanganate and sodium hydroxide, and corrosive agent is heated
To boiling, it will be immersed in corrosive liquid by mechanical polishing and the sample of polishing under fluidized state, carry out the corrosion of arborescent structure.
Since as-cast specimen is different with the corrosion resistance of heat treatment sample, the corrosion of different conditions sample has been respectively provided in the present invention
Time.Corrosive agent composition in the present invention is simple, and only two kinds of components of potassium permanganate and sodium hydroxide, configuration proportion 1:1 are prepared
Process is simple.The CoCrMo alloy branch crystal tissue corroded using this method is clear and accurate, is enriched with the interdendritic of solution strengthening element
Region is corroded, and interdendritic is in grey black under the microscope, and dendrite is done as brilliant white, and tissue is clear, and favorable reproducibility solves
It is CoCrMo alloy between CoCrMo alloy branch crystal fabric study microstructure mechanical property and casting technique the problem of relationship
Optimize microscopic structure in joint prosthesis casting process and casting technique provides technical support.
Detailed description of the invention
Fig. 1 is the effect picture of the embodiment of the present invention 1.
Fig. 2 is the effect picture of the embodiment of the present invention 2.
Specific embodiment
Specific technical solution implementation process of the present invention is as follows:
1. prepared by sample
It prepares and requires according to metallographic specimen, by sample silicon carbide paper from 120# mechanical polishing to 1200~1500#, then
Mechanical polishing is rinsed to clear water after the no marking of surface, then with alcohol washes and is dried up.
2. corrosive agent composition and ratio
Corrosive agent composition: 8% liquor potassic permanganate, 20% sodium hydroxide solution.
Proportion: 1:1.
3. corrosive agent is prepared
20~40ml of liquor potassic permanganate that concentration is 8% is first measured, is poured into beaker；
20~40ml of sodium hydroxide solution that concentration is 20% is measured, is poured into the beaker equipped with liquor potassic permanganate, is used
Glass bar stirring is sufficiently mixed solution uniformly.
4. caustic solution
Corrosive liquid is heated with heating furnace；Start to corrode after corrosive agent comes to life, clamps sample with clip, make
The corrosion of sample is placed in the corrosive agent of boiling up, shakes gently sample, when sample is as-cast specimen, etching time
It is 30~60 seconds, when sample is heat treatment state sample, etching time is 150~240 seconds；Alcohol wipe sample after corrosion
Erosional surface can carry out the observation of arborescent structure under the microscope after drying.
Embodiment 1
1. prepared by sample
The CoCrMo alloy joint prosthesis one for choosing as cast condition, cuts one piece of metallographic specimen of Ф 15*12mm.Sample is pressed
Carry out mechanical polishing and polishing according to metallographic specimen preparation method, sample first pass through 120#, 200#, 400#, 600#, 800#,
1000#, 1200# silicon carbide paper mechanical polishing；It reuses the antiscuffing paste that granularity is 3.5 μm and 1.5 μm to be mechanically polished, polish
Clear water rinses after to surface no marking, then with alcohol washes and dries up, and notices that erosional surface cannot there are water stain.
2. corrosive agent is prepared
The liquor potassic permanganate 30ml that concentration is 8% first is measured with graduated cylinder, is poured into beaker；Measuring concentration again is 20%
Sodium hydroxide solution 30ml is poured into the beaker equipped with liquor potassic permanganate, is sufficiently mixed solution uniformly with glass bar stirring.
3. caustic solution
Asbestos gauge is placed on heating furnace, then the beaker equipped with corrosive agent is placed on asbestos gauge, corrosive liquid is heated to
After boiling, sample is clamped with clip, sample corrosion up, is immersed in the corrosive agent of boiling, and shake gently sample, as cast condition examination
Sample etching time is 50 seconds, and alcohol wipe erosional surface is used after corrosion, carries out dendrite after being dried up with hair dryer under the microscope
The observation of tissue.
Embodiment 2
1. prepared by sample
The CoCrMo alloy joint prosthesis one for choosing condition of heat treatment, cuts one piece of metallographic specimen of Ф 15*10mm.It will
Sample carries out mechanical polishing and polishing according to metallographic specimen preparation method, sample first pass through 120#, 200#, 400#, 600#,
800#, 1000#, 1200# silicon carbide paper mechanical polishing；It reuses the antiscuffing paste that granularity is 3.5 μm and 1.5 μm and carries out mechanical throwing
Light, clear water rinses after being polished to surface no marking, then with alcohol washes and dries up, and notices that erosional surface cannot there are water stain.
2. corrosive agent is prepared
The liquor potassic permanganate 25ml that concentration is 8% first is measured with graduated cylinder, is poured into beaker；Measuring concentration again is 20%
Sodium hydroxide solution 25ml is poured into the beaker equipped with liquor potassic permanganate, is sufficiently mixed solution uniformly with glass bar stirring.
3. caustic solution
Asbestos gauge is placed on heating furnace, then the beaker equipped with corrosive agent is placed on asbestos gauge, corrosive liquid is heated to
After boiling, sample is clamped with clip, sample corrosion up, is immersed in the corrosive agent of boiling, and shake gently sample, is heat-treated
State sample etching time is 220 seconds；Alcohol wipe erosional surface is used after corrosion, is carried out under the microscope after being dried up with hair dryer
The observation of arborescent structure.
Claims (2)
1. a kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent, characterized in that the composition of corrosive agent is that concentration is 8%
Liquor potassic permanganate, concentration be 20% sodium hydroxide solution, corrosive liquid is configured to the proportion of 1:1.
2. a kind of method corroded with joint prosthesis described in claim 1 with CoCrMo alloy branch crystal tissue corrosive agent,
It is characterized in that
1) prepared by sample
Sample is carried out in strict accordance with metallographic specimen preparation process, with silicon carbide paper from 120# mechanical polishing to 1200~1500#, so
After mechanically polish to surface no marking after clear water rinse, it is stand-by after being dried up with alcohol washes；
2) caustic solution
The beaker equipped with corrosive agent is heated with heating furnace, starts to corrode after corrosive agent comes to life, be clamped with clip
Sample is placed in the corrosion of sample in the corrosive agent of boiling up, shakes gently sample, when sample is as-cast specimen,
Etching time is 30~60 seconds, and when sample is heat treatment state sample, etching time is 150~240 seconds；
3) after corroding, with alcohol wipe erosional surface, the observation of arborescent structure can be carried out after drying under the microscope.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811093634.0A CN109342688A (en) | 2018-09-19 | 2018-09-19 | A kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent and caustic solution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811093634.0A CN109342688A (en) | 2018-09-19 | 2018-09-19 | A kind of joint prosthesis CoCrMo alloy branch crystal tissue corrosive agent and caustic solution |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077006A (en) * | 2020-03-04 | 2020-04-28 | 中国第一重型机械股份公司 | Nickel-based alloy as-cast grain corrosion method for ultra-supercritical steam turbine unit |
| CN111380738A (en) * | 2020-04-30 | 2020-07-07 | 润电能源科学技术有限公司 | Corrosive agent for detecting austenitic stainless steel slip band structure and application thereof |
| CN111424279A (en) * | 2020-04-26 | 2020-07-17 | 歌尔股份有限公司 | Corrosive and corrosion method for displaying metallographic structure of cobalt-chromium-molybdenum alloy |
| CN111926330A (en) * | 2020-08-17 | 2020-11-13 | 无锡卡仕精密科技有限公司 | Corrosive agent and corrosion method suitable for CoCrMo high-temperature alloy of artificial joint |
| CN116735310A (en) * | 2023-06-07 | 2023-09-12 | 国标（北京）检验认证有限公司 | Metallographic phase sample preparation method of zinc selenide polycrystalline ceramic material |
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| JP2009039517A (en) * | 2007-07-06 | 2009-02-26 | Depuy Products Inc | Microtextured implants and methods of making same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077006A (en) * | 2020-03-04 | 2020-04-28 | 中国第一重型机械股份公司 | Nickel-based alloy as-cast grain corrosion method for ultra-supercritical steam turbine unit |
| CN111424279A (en) * | 2020-04-26 | 2020-07-17 | 歌尔股份有限公司 | Corrosive and corrosion method for displaying metallographic structure of cobalt-chromium-molybdenum alloy |
| CN111380738A (en) * | 2020-04-30 | 2020-07-07 | 润电能源科学技术有限公司 | Corrosive agent for detecting austenitic stainless steel slip band structure and application thereof |
| CN111926330A (en) * | 2020-08-17 | 2020-11-13 | 无锡卡仕精密科技有限公司 | Corrosive agent and corrosion method suitable for CoCrMo high-temperature alloy of artificial joint |
| CN116735310A (en) * | 2023-06-07 | 2023-09-12 | 国标（北京）检验认证有限公司 | Metallographic phase sample preparation method of zinc selenide polycrystalline ceramic material |
| CN116735310B (en) * | 2023-06-07 | 2023-12-19 | 国标（北京）检验认证有限公司 | Metallographic phase sample preparation method of zinc selenide polycrystalline ceramic material |
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Application publication date: 20190215 |