CN106367715A - Metallic titanium surface salt-bath vanadizing agent and vanadizing method - Google Patents
Metallic titanium surface salt-bath vanadizing agent and vanadizing method Download PDFInfo
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- CN106367715A CN106367715A CN201610818503.9A CN201610818503A CN106367715A CN 106367715 A CN106367715 A CN 106367715A CN 201610818503 A CN201610818503 A CN 201610818503A CN 106367715 A CN106367715 A CN 106367715A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/24—Salt bath containing the element to be diffused
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/02—Pretreatment of the material to be coated
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Abstract
The invention provides a metallic titanium surface salt-bath vanadizing agent and a vanadizing process thereof. The salt-bath vanadizing agent comprises the following components in percentage by mass: 72% of anhydrous borax (Na2B4O7), 10% of vanadium oxide (V2O5), 4% boron carbide (B4C), 4% barium chloride (BaCl2), 1% sodium chloride (NaCl) and 9% of sodium fluoride (NaF). Through addition of boron oxide (B2O3) or lanthanum oxide (La2O3), the vanadizing layer thickness of 8 [mu]m and the surface microhardness of 2200-2600 HV can be obtained for metallic titanium after heat preservation at 950 DEG for 4 h in a salt-bath vanadizing experiment. The salt-bath vanadizing agent and the vanadizing process provided by the invention have the advantages that the operation process is simple and the economic performance is good, can be applied to industrial production, and have very broad application prospect in the biomedical field and the like.
Description
Technical field
The present invention relates to a kind of Metallic Materials and Heat Treatment technology, especially a kind of titanium alloy modification technology, specifically
It is a kind of metallic titanium surface salt bath vanadizing agent and vanadinizing method.
Background technology
Titanium and titanium alloy as bio-medical material, with its relatively low elastic modelling quantity, good biocompatibility, anti-corruption
The advantages of corrosion and manufacturability and be widely used in sclerous tissueses' replacement, cardiac valve, intravascular stent, tooth root and various rectify
Shape apparatus etc..Although but its elastic modelling quantity is relatively low with respect to other biological medical material, being still far above the springform of people's bone
Amount, and its hardness is low, coefficient of friction is big, surface abrasion ability is poor, corrosion resistance also needs to improve further.Vanadinizing is processed
Metal surface anti-wear performance, corrosion resistance can be significantly improved.
Three kinds of sufacings being now widely used for preparing Vanadized layer are respectively: ion implantation technique, magnetron sputtering
Membrane technology, double glow discharge alloying process technology.Although these technology have at aspects such as apparatus and process, coating adhesion energy
Very big advantage, but the limitation such as generally existing high cost, very flexible, largely limit it and turn to engineering practice
Change.And, the modified layer that ion implantation technique is formed is excessively thin, magnetron sputtering technology, double glow discharge alloying process skill
Art needs to complete under the conditions of vacuum protection, and such equipment is complicated, makes troubles to operation.
Salt bath vanadizing technology has that quality layer is high, performance is good, and equipment is simple, easy to operate, the features such as with low cost, is
A kind of surface strengthening technology of great development prospect.As far as the applicant is aware, not yet someone adopts salt bath vanadizing technology in Titanium
Surface obtains Vanadized layer.
Content of the invention
The purpose of the present invention be for existing vanadinizing technical operation is complicated, high cost and infiltration layer is thin, hardness is low problem,
Invent a kind of metallic titanium surface salt bath vanadizing agent, corresponding vanadinizing technique is provided simultaneously.It can not only obtain excellent performance
Vanadized layer, and have simple to operate, easy realization, low for equipment requirements the features such as, there is excellent economy.
One of technical scheme is:
A kind of metallic titanium surface salt bath vanadizing agent, is characterized in that it mainly by borax anhydrouss (na2b4o7), vanadium oxide (v2o5), carbon
Change boron (b4C), barium chloride (bacl2), sodium chloride (nacl), sodium fluoride (naf) and boron oxide (b2o3) composition, wherein na2b4o7
Mass percent be 69.9%；v2o5Mass percent be 9.7%；The mass percent of b4c is 3.88%；bacl2Quality hundred
Divide ratio for 3.88%；Nacl mass percent is 0.97%；Naf mass percent is 8.67%；b2o3Mass percent is 3%；Described
Boron oxide (b2o3) thickness of infiltration layer can be increased to 8 microns, the hardness on infiltration layer top layer can be made to improve 6- than matrix hardness
8 times.
The two of technical scheme are:
A kind of metallic titanium surface salt bath vanadizing agent, is characterized in that it mainly by borax anhydrouss (na2b4o7), vanadium oxide (v2o5), carbon
Change boron (b4C), barium chloride (bacl2), sodium chloride (nacl), sodium fluoride (naf) and lanthana (la2o3) composition, wherein na2b4o7
Mass percent be 69.9%；v2o5Mass percent be 9.7%；The mass percent of b4c is 3.88%；bacl2Quality hundred
Divide ratio for 3.88%；Nacl mass percent is 0.97%；Naf mass percent is 8.67%；la2o3Mass percent is 3%；Institute
Lanthana (the la stating2o3) property and the alloying layer thickness of infiltration layer can be significantly improved.
The three of technical scheme are:
A kind of method carrying out vanadinizing in surface of metal titanium, is characterized in that it comprises the following steps:
(1) weigh each component by mass percentage, be placed in 100 DEG C～120 DEG C baking oven 40min～60min after mix homogeneously and dry
Standby；
(2) metallic titanium surface pretreatment: metallic titanium surface is carried out surface sand papering and machine after oil removing, deionized water cleaning
Tool polishes, and surface is thrown and is ra0.5 μm to roughness, then acetone ultrasound wave cleaning at least 20min；
(3) vanadinizing is processed: the crucible that will be equipped with salt bath vanadizing agent is put in resistance furnace, is heated to 850 DEG C, so that Borax is all melted
Change；Then furnace temperature is risen to 950 DEG C, be incubated 1～2h, stirred with metal bar every half an hour simultaneously；By Titanium workpiece
Put in the salt bath vanadizing agent being equipped with, and make the groundwork face of Titanium workpiece keep hanging down with salt bath flow direction as far as possible
Directly, take out air cooling after insulation 4h, Vanadized layer is obtained in Titanium surface of the work；
(4) clean Titanium workpiece: the Titanium workpiece after vanadinizing is put in people's boiling water and boils, until the Borax removing bonding is
Can.
The invention has the beneficial effects as follows:
(1) the invention provides a kind of simple to operate, with low cost, metallic titanium surface salt bath vanadizing agent that processing performance is excellent.
(2) present invention is not required to vacuum protection, can carry out vanadinizing process to Titanium under air conditionses.
(3) the Vanadized layer thickness adopting the preparation of this method is 8 μm about, and Vanadized layer surface hardness is 2200～2600hv, about
For matrix hardness (about 330hv) 6～8 times.
(4) present invention is applicable not only to various model titanium alloys, applies also for the surface treatment of pure titanium.
Brief description
Fig. 1 is embodiment one titanium alloy containing b2o3The scanning electron microscope of Vanadized layer after 950 DEG C of insulation 4h of salt bath medium
Figure.
Fig. 2 is embodiment two titanium alloy containing la2o3The scanning electron microscope of Vanadized layer after 950 DEG C of insulation 4h of salt bath medium
Figure.
Fig. 3 is comparative example one titanium alloy Vanadized layer scanning electron microscope diagram after 950 DEG C of insulation 4h.
Specific embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
Embodiment one.
Will be by 699 grams of borax anhydrouss (na2b4o7), 97 grams of vanadium oxide (v2o5), 38.8 grams of boron carbide (b4C), 38.8 grams of chlorine
Change barium (bacl2), 9.7 grams of sodium chloride (nacl), 86 grams of sodium fluoride (naf) and 30 grams of boron oxide (b2o3) be placed in after mix homogeneously
120 DEG C of baking oven 40min dry that to make salt bath vanadizing agent standby.
Tc4 titanium alloy rod bar wire cutting is become the section bar of 10mm × 10mm × 3mm is standby to obtain titanium alloy block.
Vanadinizing technique is: metallic titanium surface pretreatment-vanadinizing process-cleaning workpiece
(1) metallic titanium surface pretreatment: by titanium alloy block surface through oil removing, deionized water cleaning after carry out surface sand papering and
Mechanical polishing, surface is thrown and is ra0.5 μm to roughness, then acetone ultrasound wave cleaning 20min；
(2) vanadinizing is processed: salt bath vanadizing agent is loaded in crucible, then puts in the lump in resistance furnace together with crucible, be heated to 850
DEG C, so that Borax is all melted；Then furnace temperature is risen to 950 DEG C, be incubated 1.5h, simultaneously equal with metal bar stirring every half an hour
Even；Titanium alloy block good for pretreatment is put in the vanadinizing salt bath being equipped with, and so that the groundwork face of titanium alloy block is protected as far as possible
Hold vertical with salt bath flow direction, insulation 4h takes out air cooling, Vanadized layer is obtained on titanium alloy block surface.
(3) cleaning workpiece: titanium alloy block is put in people's boiling water and boils, until removing the Borax of bonding.
Detected after taking out sample.Scanned Electron microscopy Vanadized layer thickness up to 8 m about (Fig. 1).Ooze
Vanadium layers are tightly combined with matrix, do not have crackle and hole to occur.Under 100gf pressure, Vanadized layer surface layer microhardness is
2202.7hv.
Embodiment two.
Method is essentially identical with embodiment one, and difference is boron oxide (b2o3) it is changed to lanthana (la2o3).
Detect after taking out sample.It is 8 μm about (Fig. 2) that scanned Electron microscopy can obtain alloying layer thickness；In 50gf
Under pressure, Vanadized layer surface hardness is 2562.6hv.
Comparative example one.
Method is essentially identical with embodiment one, and difference is that vanadinizing formula eliminates boron oxide (b2o3).Take out sample
After detect, Vanadized layer very thin thickness (Fig. 3), 50gf pressure lower surface microhardness be 683hv.
Part that the present invention does not relate to is all same as the prior art or can be realized using prior art.
Claims (3)
1. a kind of metallic titanium surface salt bath vanadizing agent, is characterized in that it mainly by borax anhydrouss (na2b4o7), vanadium oxide (v2o5),
Boron carbide (b4C), barium chloride (bacl2), sodium chloride (nacl), sodium fluoride (naf) and boron oxide (b2o3) composition, wherein
na2b4o7Mass percent be 69.9%；v2o5Mass percent be 9.7%；The mass percent of b4c is 3.88%；bacl2
Mass percent is 3.88%；Nacl mass percent is 0.97%；Naf mass percent is 8.67%；b2o3Mass percent is
3%；Described boron oxide (b2o3) thickness of infiltration layer can be increased to 8 microns, the hardness on infiltration layer top layer can be made harder than matrix
Degree improves 6-8 times.
2. a kind of metallic titanium surface salt bath vanadizing agent, is characterized in that it mainly by borax anhydrouss (na2b4o7), vanadium oxide (v2o5),
Boron carbide (b4C), barium chloride (bacl2), sodium chloride (nacl), sodium fluoride (naf) and lanthana (la2o3) composition, wherein
na2b4o7Mass percent be 69.9%；v2o5Mass percent be 9.7%；The mass percent of b4c is 3.88%；bacl2
Mass percent is 3.88%；Nacl mass percent is 0.97%；Naf mass percent is 8.67%； la2o3Mass percent
For 3%；Described lanthana (la2o3) property and the alloying layer thickness of infiltration layer can be significantly improved.
3. a kind of method carrying out vanadinizing in surface of metal titanium using the vanadinizing agent described in claim 1 or 2, is characterized in that it wraps
Include following steps:
(1) weigh each component by mass percentage, be placed in 100 DEG C～120 DEG C baking oven 40min～60min after mix homogeneously and dry
Standby；
(2) metallic titanium surface pretreatment: metallic titanium surface is carried out surface sand papering and machine after oil removing, deionized water cleaning
Tool polishes, and surface is thrown and is ra0.5 μm to roughness, then acetone ultrasound wave cleaning at least 20min；
(3) vanadinizing is processed: the crucible that will be equipped with salt bath vanadizing agent is put in resistance furnace, is heated to 850 DEG C, so that Borax is all melted
Change；Then furnace temperature is risen to 950 DEG C, be incubated 1～2h, stirred with metal bar every half an hour simultaneously；By Titanium workpiece
Put in the salt bath vanadizing agent being equipped with, and make the groundwork face of Titanium workpiece keep hanging down with salt bath flow direction as far as possible
Directly, take out air cooling after insulation 4h, Vanadized layer is obtained in Titanium surface of the work；
(4) clean Titanium workpiece: the Titanium workpiece after vanadinizing is put in people's boiling water and boils, until the Borax removing bonding is
Can.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385387A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of lanthana urges the big infiltration layer oozed, high quality salt bath B-V co-penetrant and co-penetration technology |
| CN107385383A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of new salt bath vanadizing agent for preparing pore structure Vanadized layer and technique |
| CN107385386A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of high rigidity, high infiltration rate and big infiltration layer salt bath B-V co-penetrant and co-penetration technology |
| CN107385388A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of new salt bath vanadizing agent for preparing super abrasive Vanadized layer and its technique |
| CN107460435A (en) * | 2017-08-07 | 2017-12-12 | 江苏大学 | A kind of high rigidity, hypotonic thermohaline bath B-V co-penetrant and co-penetration technology |
| CN107460434A (en) * | 2017-07-28 | 2017-12-12 | 江苏大学 | Efficiently, high quality nickel base superalloy surface salt bath chromizing agent and technique |
| CN107858637A (en) * | 2017-12-11 | 2018-03-30 | 马鞍山蓝科再制造技术有限公司 | A kind of method of steel mold salt bath vanadizing |
| CN109385598A (en) * | 2017-08-07 | 2019-02-26 | 江苏大学 | A kind of nickel base superalloy neutral salt bath chromaluminizing medium and its technique |
| CN113957383A (en) * | 2021-11-02 | 2022-01-21 | 左全虎 | Metal surface corrosion-resistant treatment method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460434A (en) * | 2017-07-28 | 2017-12-12 | 江苏大学 | Efficiently, high quality nickel base superalloy surface salt bath chromizing agent and technique |
| CN107385387A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of lanthana urges the big infiltration layer oozed, high quality salt bath B-V co-penetrant and co-penetration technology |
| CN107385383A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of new salt bath vanadizing agent for preparing pore structure Vanadized layer and technique |
| CN107385386A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of high rigidity, high infiltration rate and big infiltration layer salt bath B-V co-penetrant and co-penetration technology |
| CN107385388A (en) * | 2017-08-07 | 2017-11-24 | 江苏大学 | A kind of new salt bath vanadizing agent for preparing super abrasive Vanadized layer and its technique |
| CN107460435A (en) * | 2017-08-07 | 2017-12-12 | 江苏大学 | A kind of high rigidity, hypotonic thermohaline bath B-V co-penetrant and co-penetration technology |
| CN109385598A (en) * | 2017-08-07 | 2019-02-26 | 江苏大学 | A kind of nickel base superalloy neutral salt bath chromaluminizing medium and its technique |
| CN107858637A (en) * | 2017-12-11 | 2018-03-30 | 马鞍山蓝科再制造技术有限公司 | A kind of method of steel mold salt bath vanadizing |
| CN113957383A (en) * | 2021-11-02 | 2022-01-21 | 左全虎 | Metal surface corrosion-resistant treatment method |
| CN113957383B (en) * | 2021-11-02 | 2023-12-29 | 上海欧希帝涂料有限公司 | Corrosion-resistant treatment method for metal surface |
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