CN108315586A - The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta - Google Patents
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta Download PDFInfo
- Publication number
- CN108315586A CN108315586A CN201810363477.4A CN201810363477A CN108315586A CN 108315586 A CN108315586 A CN 108315586A CN 201810363477 A CN201810363477 A CN 201810363477A CN 108315586 A CN108315586 A CN 108315586A
- Authority
- CN
- China
- Prior art keywords
- dipping
- galvanizing
- energy
- zinc
- oxidation
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
It is used the invention discloses the energy-saving aluminium galvanizing by dipping of resistance to oxidation and contains Sc and Ta kirsites and its processing technology.According to weight percent, the ingredient of the alloy is：Ba:0.5‑1.0wt.%,Sc:0.2‑0.4wt.%,In:0.5‑0.8wt.%,Ta：0.4 0.6wt.%, Sb:0.4‑0.6wt.%,Co:1.0 1.5wt.%, surplus are zinc.The present invention helps to develop high-quality aluminium galvanizing by dipping kirsite, and for promoting China's independent research fine work new material, and occupying inter-national market has facilitation.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of kirsite.
Background technology
As is well known, every field of the etching problem of metal material in national economy and people's lives.Corrode to
The mankind have brought tremendous economic losses and endanger.According to incompletely statistics, the metal that the whole world is lost by corrosion every year is up to
2.3 hundred million tons, this number accounts for about 30% or so of current year output of steel.According to the statistics of developed country, the economic loss caused by corrosion
Account for about the 1-5% of current year gross national product.The metal erosion problem in China is also quite serious, every year the warp caused by corrosion
Ji loss accounts for about the 4% of national economy total output value, and the indirect loss brought by corrosion is even more to be difficult to estimate.For a long time, people
Seeking various methods always and reduce the harm of corrosion.Since corrosion begins with metal surface, so using Surface Engineering skill
Art carries out surface modification and has become one of most active Disciplinary Frontiers of material science.
Since the standard electrode potential of zinc is defeated by iron, zinc coat has galvanic anode protection in water and wet air
The effect for protecting base steel, so as to greatly extend the service life of steel.Industrially common zinc coat have galvanizing by dipping,
Electrogalvanizing, mechanical zinc-plating and thermal spraying（Plating）Zinc etc., wherein galvanizing account for about the 95% of zinc-plated total amount, and galvanizing is alive with zinc amount
The 40% of zinc yield is accounted within the scope of boundary, accounts for about 30% or so of zinc yield in China.
With the development of industry, the advantages of hot dip zinc product has applied to many fields, galvanizing is the anti-corrosion time limit
For a long time, it is always the method for anticorrosion treatment being popular to adapt to environment extensively.Be widely used with electric power tower, communication iron tower,
Railway, highway protection, light pole, component peculiar to vessel, construction steel structure component, substation's affiliated facility, light industry etc..
The advantages of galvanizing:1) processing cost is low：The expense of galvanizing by dipping antirust is than the expense of other paint vehicle coatings
It is low；2) durable：Under suburban environment, the galvanizing antirust thickness of standard can keep 30 years or more without repairing；In city
Area or greater coasting area, the galvanizing antirust coat of standard can then keep 20 years without repairing；3) good reliability：Zinc coat and steel
It is metallurgical binding between material, becomes some of steel surface, therefore the persistence of coating is more reliable；4) toughness of coating is strong：Plating
Zinc layers form a kind of special metallurgical structure, and this structure can bear mechanically damaged in transport and use；5) comprehensive
Protection：The each section of plating piece can plate zinc, even if can be protected in recess, wedge angle and covert comprehensively；6) it saves
Shi Shengli：Galvanizing process is more faster than other coating construction methods, and can avoid installation after on-site brush needed for
Time.
The aluminium scrapped every year by corrosion in the world accounts for the one third of aluminium annual output, therefore, it is crucial to save aluminium
It is to solve aluminium etching problem.Galvanizing can form fine and close film in corrosive environment, and protection is all played to aluminum substrate and is made
With.After galvanizing, the service life of aluminium is obviously prolonged.In addition, if being passivated processing in zinc-plated aluminium material surface, moreover it is possible to
The service life for improving zinc coat improves the lustrous surface of zinc coat, enhances the binding force of coating and matrix.
Current Domestic galvanizing by dipping field there are problems that, industry overall development greatly without strong, do not have also and
The ability that same industry developed country of the world contends with, common product excess capacity, high-end product rely on import.Commercial scale reaches generation
Boundary is larger, and whole equipment and portion of techniques are close to or up to international most advanced level, and whole technology of equipping integrally falls behind, produces
Efficiency is low, and resources and energy consumption is big.Galvanizing by dipping development field falls behind, not only the underlying issue of heat treatment process, and also and
Industry upstream and downstream is closely bound up, and whole industry falls behind so that our galvanizing by dipping system sequence exploitation has an impact.
Although China's aluminium is smelted and there is prodigious resources advantage, current most of aluminium not to use for processing
It is effectively protected method.Therefore relatively it is difficult to guarantee in development cycle, designing quality and its processing quality etc. realized so that enterprise
Industry can not also obtain the breakthrough of bigger in market with keen competition.Develop aluminium with high quality heat zinc immersion kirsite for
China's independent research fine work new material is promoted, capturing international fine work new material market has facilitation.To conventional hot-dip zinc
The innovation and optimization for carrying out bottom property have positive meaning to the development and promotion of entire galvanizing by dipping industry and its technology
Justice.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, and providing one kind can make under 300-400 degree atmospheric conditions
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta.This method has production cost low, convenient for extensive
The characteristics of production.
To achieve the goals above, the present invention adopts the following technical scheme that：
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta；According to weight percent, the ingredient of the alloy is：
Ba: 0.5-1.0wt.%,Sc:0.2-0.4wt.%,In:0.5-0.8wt.%,Ta：0.4-0.6wt.%, Sb:0.4-0.6wt.%,
Co:1.0-1.5wt.%, surplus are zinc.
The preparation method of the above-mentioned energy-saving aluminium galvanizing by dipping kirsite containing Sc and Ta of resistance to oxidation, includes the following steps：
As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Sensing heating is to 500-600
Degree forms alloy solution, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is kept the temperature in 500-600 degree
Standing is cast in the same level equipment of heat top and carries out semi-continuous casting into required billet after ten minutes, and ingot casting moves down speed and is
10-20m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Wherein, hot-dip
The operating temperature of zinc is 300-400 degree, and the hot dipping time is 30-60 seconds.
Compared with prior art, the present invention has the advantages that：
（1）The kirsite of patent of the present invention has extremely low fusing point, and bath surface oxidation generation is fine and close after temperature is higher than 300 degree
Oxidation film and nitride film, effectively prevent zinc fume waving into air.The kirsite is in 300-600 temperature ranges in air
5 hours are stood under environment without significantly aoxidizing.The melt treatments process such as the liquid zinc alloy is being stirred, is being blown
In, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the oxidation and volatilization of alloy.
（2）There are close relationship in the thickness and quality and zinc liquid temperature of coating, immersion plating time.If zinc liquid temperature too it is low not only
Thickness of coating is smaller, and quality of coating is poor.If temperature is too high, it will cause the Fast Growth of alloy-layer, subsequent alloy-layer
It fuses into again in zinc liquid and sample thickness of coating is caused to decline, while the brittleness of coating being made to increase.And the rate of dissolution increase etc. of aluminium
Reason reduces the quality of zinc liquid.Immersion plating time too short zinc liquid and matrix are not sufficiently reactive, with the rising thickness of coating of time
Just gradually increase.But the alloy-layer of immersion plating time too long generation fuses into zinc liquid and sample thickness of coating is caused to decline again.These are complicated
Influence factor make design galvanizing by dipping optimize technological parameter be not an easy thing.This patent proposes optimal
Changing galvanizing by dipping operating condition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60 seconds.And ordinary hot
The operating temperature of zinc immersion is 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology has coating uniform, attached
Put forth effort strong, the advantages that service life is long.Further, since hot dipping temperature substantially reduces, thus effect is clearly for energy saving.
In addition, the hot-dip coated oxidation rate under desert Environment is 2.6 × 10-4Mm/.Thus the aluminium wire of the galvanizing by dipping is in desert
It can be occurred without apparent oxidative phenomena with trouble free service 40 years or more under environment, in comparison common galvanizing by dipping is in sand
Service life is generally 30 years under unconcerned sex work environment.
Embodiment
Embodiment 1
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta.By weight percentage, the chemical composition of the material
For：Ba: 0.5wt.%,Sc:0.2wt.%,In:0.5wt.%,Ta：0.5wt.%, Sb:0.4wt.%,Co:1.2wt.%, surplus are
Zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Induction
It is heated to 550 degree and forms alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid 550
Degree heat preservation, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, and ingot casting moves down
Speed is 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Galvanizing by dipping
Operating temperature be 300-400 degree, the hot dipping time be 30-60 seconds.
The kirsite of patent of the present invention has extremely low fusing point, and bath surface oxidation, which generates, after temperature is higher than 300 degree causes
Close oxidation film and nitride film effectively prevents zinc fume waving into air.The kirsite is in 300-600 temperature ranges big
5 hours are stood under compression ring border without significantly aoxidizing.The melt treatments mistake such as the liquid zinc alloy is being stirred, is being blown
Cheng Zhong, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the oxidation and volatilization of alloy.This patent
The optimization galvanizing by dipping operating condition of proposition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60
Second.And the operating temperature of common hot-dip galvanizing is 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, has
The advantages that coating is uniform, strong adhesive force, service life is long.Further, since hot dipping temperature substantially reduces, thus imitated for energy saving
Fruit is clearly.In addition, the hot-dip coated oxidation rate under desert Environment is 2.1 × 10-4Mm/.The thus galvanizing by dipping
Aluminium wire can be occurred without apparent oxidative phenomena with trouble free service 40 years or more under desert Environment, it is in comparison common
Galvanizing by dipping service life under desert working environment is generally 30 years.
Embodiment 2
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta.By weight percentage, the chemical composition of the material
For：Ba: 0.8wt.%,Sc:0.3wt.%,In:0.6wt.%,Ta：0.5wt.%, Sb:0.4wt.%,Co:1.2wt.%, surplus are
Zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Induction
It is heated to 550 degree and forms alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid 550
Degree heat preservation, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, and ingot casting moves down
Speed is 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Galvanizing by dipping
Operating temperature be 300-400 degree, the hot dipping time be 30-60 seconds.
The kirsite of patent of the present invention has extremely low fusing point, and bath surface oxidation, which generates, after temperature is higher than 300 degree causes
Close oxidation film and nitride film effectively prevents zinc fume waving into air.The kirsite is in 300-600 temperature ranges big
5 hours are stood under compression ring border without significantly aoxidizing.The melt treatments mistake such as the liquid zinc alloy is being stirred, is being blown
Cheng Zhong, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the oxidation and volatilization of alloy.This patent
The optimization galvanizing by dipping operating condition of proposition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60
Second.And the operating temperature of common hot-dip galvanizing is 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, has
The advantages that coating is uniform, strong adhesive force, service life is long.Further, since hot dipping temperature substantially reduces, thus imitated for energy saving
Fruit is clearly.In addition, the hot-dip coated oxidation rate under desert Environment is 2.1 × 10-4Mm/.The thus galvanizing by dipping
Aluminium wire can be occurred without apparent oxidative phenomena with trouble free service 40 years or more under desert Environment, it is in comparison common
Galvanizing by dipping service life under desert working environment is generally 30 years.
Embodiment 3
The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta.By weight percentage, the chemical composition of the material
For：Ba: 0.9wt.%,Sc:0.3wt.%,In:0.6wt.%,Ta：0.4wt.%, Sb:0.4wt.%,Co:1.2wt.%, surplus are
Zinc.Preparation method：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Induction
It is heated to 550 degree and forms alloy solution, and be sufficiently stirred 10 minutes or so using electromagnetic agitation effect；By alloy liquid 550
Degree heat preservation, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet, and ingot casting moves down
Speed is 14m/min.The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Galvanizing by dipping
Operating temperature be 300-400 degree, the hot dipping time be 30-60 seconds.
The kirsite of patent of the present invention has extremely low fusing point, and bath surface oxidation, which generates, after temperature is higher than 300 degree causes
Close oxidation film and nitride film effectively prevents zinc fume waving into air.The kirsite is in 300-600 temperature ranges big
5 hours are stood under compression ring border without significantly aoxidizing.The melt treatments mistake such as the liquid zinc alloy is being stirred, is being blown
Cheng Zhong, after its skin covering of the surface is destroyed because being vigorously stirred, energy rapid regeneration successfully hinders the oxidation and volatilization of alloy.This patent
The optimization galvanizing by dipping operating condition of proposition is：The operating temperature of galvanizing by dipping is 300-400 degree, and the hot dipping time is 30-60
Second.And the operating temperature of common hot-dip galvanizing is 400-600 degree.Aluminium surface dip galvanized prepared by the processing technology, has
The advantages that coating is uniform, strong adhesive force, service life is long.Further, since hot dipping temperature substantially reduces, thus imitated for energy saving
Fruit is clearly.In addition, the hot-dip coated oxidation rate under desert Environment is 2.1 × 10-4Mm/.The thus galvanizing by dipping
Aluminium wire can be occurred without apparent oxidative phenomena with trouble free service 40 years or more under desert Environment, it is in comparison common
Galvanizing by dipping service life under desert working environment is generally 30 years.
Claims (3)
1. the energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta；According to weight percent, the ingredient of the alloy is：
Ba: 0.5-1.0wt.%,Sc:0.2-0.4wt.%,In:0.5-0.8wt.%,Ta：0.4-0.6wt.%, Sb:0.4-0.6wt.%,
Co:1.0-1.5wt.%, surplus are zinc.
2. the energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta according to claim 1, it is characterised in that packet
Include following steps：As above the raw material matched is added in the electric induction furnace of atmosphere protection, and uses silicon carbide crucible；Induction adds
Heat forms alloy solution to 500-600 degree, and is sufficiently stirred 10 minutes or so using electromagnetic agitation effect；Alloy liquid is existed
The heat preservation of 500-600 degree, which stands to be cast to after ten minutes in the same level equipment of heat top, carries out semi-continuous casting into required billet,
It is 10-20m/min that ingot casting, which moves down speed,.
3. the energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta according to claim 1, it is characterised in that packet
Step is used containing following：The ingot casting can regard the erosion shield processing that galvanizing by dipping carries out aluminium with kirsite；Wherein, hot
The operating temperature of zinc immersion is 300-400 degree, and the hot dipping time is 30-60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810363477.4A CN108315586A (en) | 2018-04-21 | 2018-04-21 | The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810363477.4A CN108315586A (en) | 2018-04-21 | 2018-04-21 | The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108315586A true CN108315586A (en) | 2018-07-24 |
Family
ID=62895574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810363477.4A Withdrawn CN108315586A (en) | 2018-04-21 | 2018-04-21 | The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108315586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241369A (en) * | 2019-05-24 | 2019-09-17 | 湖南创林新材料科技有限公司 | A kind of hot dip zinc-aluminium nickel tantalum alloy and the method for hot galvanizing |
-
2018
- 2018-04-21 CN CN201810363477.4A patent/CN108315586A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241369A (en) * | 2019-05-24 | 2019-09-17 | 湖南创林新材料科技有限公司 | A kind of hot dip zinc-aluminium nickel tantalum alloy and the method for hot galvanizing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102534306A (en) | Zinc-aluminum-magnesium-rare earth multi-element alloy material and preparation method thereof | |
| CN110257750B (en) | Hot-dip aluminum alloy coating and hot-dip plating method thereof | |
| CN101665895A (en) | Composite method of plating steel by hot dipping | |
| CN108315586A (en) | The energy-saving aluminium galvanizing by dipping of resistance to oxidation kirsite containing Sc and Ta | |
| CN108220685A (en) | The corrosion-resistant kirsite containing Pd and Ge of energy-saving aluminium timber-used galvanizing by dipping | |
| CN108220684A (en) | Aluminum alloy heat zinc immersion kirsite containing Zr and Ba is carried out under low temperature | |
| CN108441797A (en) | For the resistance to oxidation kirsite containing Sc in aluminum alloy surface galvanizing by dipping | |
| CN108220686A (en) | Aluminium galvanizing by dipping elimination white point and the blackspot kirsite containing Ru and Bi | |
| CN108315587A (en) | The corrosion-resistant kirsite containing Ta and Cr of galvanizing by dipping suitable for active steel | |
| CN108277387A (en) | Kirsite of the steel wire galvanizing by dipping containing Ru and Sn used under low temperature | |
| CN108441700A (en) | No zinc flower pattern hot-dip aluminum zinc slag formula Ca-B-V allumens | |
| CN108330324A (en) | New zinc magnesium-based galvanizing by dipping spends Mg-In-Ni kirsites with no zinc | |
| CN108285992A (en) | Kirsite of the novel aluminum alloy galvanizing by dipping containing Nb and Mn | |
| CN108396178A (en) | With the novel kirsite containing Cr of energy-conserving action steel wire galvanizing by dipping | |
| CN108251704A (en) | The energy-saving kirsite containing Te and Ti of novel steel wire galvanizing by dipping | |
| CN108396179A (en) | A kind of energy-saving kirsite containing Hf and In of aluminium galvanizing by dipping | |
| CN108396180A (en) | Energy-saving no white point and blackspot steel wire galvanizing by dipping kirsite containing Re | |
| CN108441678A (en) | High silicon content steel resistance to oxidation galvanizing by dipping kirsite containing Te and Nb | |
| CN108441677A (en) | Eliminate thermal dip plating of steel zinc kirsite containing Te and Os of white point and blackspot | |
| CN104195489A (en) | Hot-dipped Al-Ni alloy aluminized layer and hot-dipping method thereof | |
| CN110004388A (en) | Carbon nano-tube modification rare earth modifies hot-dip galvanized alloy coating for protection against corrosion and preparation method | |
| CN108441699A (en) | Fishery steel wire hot-dip allumen containing Mg and Ca under marine environment | |
| CN108315585A (en) | For high-carbon steel galvanizing by dipping novel energy-conserving kirsite containing Hf | |
| CN108411233A (en) | The corrosion-resistant kirsite containing Ru of high-carbon steel galvanizing by dipping | |
| CN108315584A (en) | The corrosion-resistant kirsite containing Se and V of high-carbon steel galvanizing by dipping |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180724 |