CN106222632A - A kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer - Google Patents

A kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer Download PDF

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CN106222632A
CN106222632A CN201610877506.XA CN201610877506A CN106222632A CN 106222632 A CN106222632 A CN 106222632A CN 201610877506 A CN201610877506 A CN 201610877506A CN 106222632 A CN106222632 A CN 106222632A
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corrosion
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magnesium alloy
environment
wear
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宿辉
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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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1635—Composition of the substrate
    • C23C18/1637—Composition of the substrate metallic substrate
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1655—Process features
    • C23C18/1662—Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
    • C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
    • C23C18/1837—Multistep pretreatment
    • C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals

Abstract

The invention discloses that a kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer, it is characterized in that using Chrome-free, without cyanogen low fluorine technique, Mg alloy surface is carried out pre-treatment, including oil removing → ultrasonic chrome-free acid-wash → low fluorine activation, then with surface modification, modified (Ni/SiC)PFor reinforcement, optimize plating formula, technique, prepare magnesio Ni P (Ni/SiC)PComposite deposite, to improve the deposition of the different alternate compatibility, adhesion and metallic nickel, thus improves the anti-corrosion of magnesium alloy and anti-wear performance etc. further.Mg alloy surface corrosion resistance improves 24 times after treatment, and wearability improves 35 times.This invention belongs to sufacing, field of material preparation, and its result can be widely used in electronics industry, auto industry, multiple fields such as civilian.The present invention is low to producing equipment requirements, without Cr in waste liquid6+、CN‑Or HF, pollution-free to environment and human body, solution composition used is conventional chemical drugs, it is easy to buy, and products obtained therefrom coating is uniform, corrosion resistance, wearability are high.

Description

A kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer
Technical field
The present invention relates to that a kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer, feature is to use Chrome-free without cyanogen The environment-protective process of low fluorine carries out pre-treatment to magnesium alloy, with surface modification, modified silicon-carbide particle (Ni/SiC)PFor increasing Qiang Ti, optimizes plating technology, preparation Ni-P-(Ni/SiC)PChemical composite plating, to improve the anti-corrosion of magnesium alloy and wearability Energy.This invention belongs to sufacing, field of material preparation.
Background technology
Magnesium, as the lightest structural metallic materials, has the advantages such as density is low, specific strength is high, elastic modelling quantity is big, is described as " green engineering materials in 21st century ", along with the gradual perfection of magnesium alloy production technology, its market demand quickly increases.But magnesium Having the highest chemism, its normal potential is-2.37V, is that in engineering alloy, current potential is the most negative.At room temperature magnesium and air In oxygen be easily formed MgO film layer, the compacting factor of film layer is only 0.79, loose and porous, it is impossible to stop the further of magnesium matrix Corrosion.Additionally, magnesium matrix alloying element, impurity and other metals easily and in alloy constitutes corrosion electricity in corrosive medium Pond, causes galvanic corrosion, seriously constrains the extensive application of magnesium and magnesium alloy.
Magnesium alloy is carried out suitable surface process and can improve its anti-corrosion and anti-wear performance.The surface used at present processes Method mainly has chemical plating, plating, chemical composition coating etc..Wherein electroless plating technology is few with its equipment investment, be not required to additional power source, Not of increasing concern by advantages such as workpiece size and shape are limited, become the study hotspot that domestic and international Mg alloy surface processes..
(SiC)PThere is the advantages such as hardness is high, wear-resisting, corrosion-resistant, prepare nickel-phosphorus chemical Composite Coatings with it for Second Phase Particle Layer, can improve the hardness of metal and anti-corrosion, wearability etc., but naked (SiC)PCovalent bond and the metallic bond of metallic matrix between Essential distinction, make boundary moisture performance poor, granule is easy to fall off, performance improve limited.
Compared with iron, magnesium alloy chemical character is active, oxidizable, brings extreme difficulties to chemical nickel plating, belongs to Difficult plating, therefore it must be carried out pre-treatment before plating.At present conventional processing method has leaching zinc method, converts embrane method and directly Chemical nickel plating, but or complex steps or plating less effective, and use the reagent such as chromic anhydride, cyanide, Fluohydric acid. more, six Valency chromium, cyanide and Fluohydric acid. have serious harm to human body and environment, are badly in need of alternate modification.
About the article of this respect or patent such as: Ge Kun etc. middle temperature alkalescence chemically coating nickel by magnesium-alloy research [J]. China's casting Make and equip and technology, 2014,3；Chen J L et al.A zinc transition layer in electroless Nickel plating [J]. Surface and Coatings Technology, 2006. Seedling profits are raw. AZ31 magnesium alloy " two-step method " Electroless Plating Ni-P alloy structure and performance study [J]. light metal, 2011. one-tenth denier are red etc. chemically coating nickel by magnesium-alloy Phosphorus method. application number: 200510110738.4.Therefore Simplified flowsheet, substitute the Cr VI harmful to environment and human body and copper cyanider Deng, explore the pre-treating technology of environment-friendly type, strengthen the compatibility between granule and metallic matrix and deposition, improve the hard of coating Degree, corrosion resistance etc., be difficulties in the urgent need to address in the research of current chemically coating nickel by magnesium-alloy.
Summary of the invention
The purpose of this patent is to solve deficiency of the prior art, explores a kind of environmental friendliness, Chrome-free without cyanogen, nickel deposition Greatly, binding force of cladding material strong, the preparation method of magnesio nickel-phosphorus composite deposit anti-corrosion, wear-resisting.
On the basis of the experiment accumulated and theoretical empirical, use direct electroless nickel method, first to magnesium alloy (with As a example by AZ91D) surface carries out pre-treatment, and this process includes sample oil removing → ultrasonic assistant chrome-free acid-wash → low fluorine activation, then With (SiC)PSurface modification, (Ni/SiC) of modified gainedPFor reinforcement, after pre-treatment, magnesium alloy is matrix, prepares magnesio Ni- P-(Ni/SiC)PComposite deposite.
The technical solution used in the present invention is:
1.AZ91D Mg alloy surface pretreatment process includes: oil removal treatment, ultrasonic assistant chrome-free acid-wash, low fluorine activate.Pickling Formula: HNO320-30ml·L-1, H3PO4 20-30ml·L-1, activating recipe: NH4H2PO4 80-100 g·L-1, NH4F 30- 50g·L-1。 2.(SiC)PSurface is modified, modification, obtains (Ni/SiC)P.3. the preparation of composite plating bath: add in coating bath successively Add nickel sulfate 20-30g L-1, reducing agent 20-35 g L-1, lactic acid 15-30ml L-1, citrate 10-20g L-1, amino Acetic acid 8-15g L-1, thiourea 0.5-1.5mg L-1, rare earth and surfactant etc., be adjusted to suitable pH value with ammonia.4. multiple Close the preparation of coating: by (Ni/SiC) of certain massPIt is made into serosity, ultrasonic disperse so that it is moistening, joins and prepared In chemical composite plating bath, stirring, after heating plating solution to set point of temperature, put into the AZ91D magnesium alloy sample plating after pre-treatment.Execute Plating temperature is 75-85 DEG C, and bath pH value scope is 6.0-8.0, and plating time is 1.5-2h.
The Advantageous Effects of the present invention is embodied in the following aspects:
(1) a kind of environment-friendly type of the present invention is anti-corrosion, AZ91D Mg alloy surface pretreatment process in the preparation of wear-resistant magnesium alloy layer, Use mineral acid HNO3、H3PO replaces chromic anhydride pickling, NH4H2PO4、NH4F replaces HF activation, can effectively reduce reagent to human body Harm and the pollution of environment, and prevent matrix excessive erosion, ultrasonic assistant pickling simultaneously from can accelerate to remove Mg alloy surface Oxide-film；NH4H2PO4、NH4F activation can generate new film layer at Mg alloy surface, protects matrix, promotes the deposition of nickel.(2) this Bright a kind of environment-friendly type is anti-corrosion, reinforcement (Ni/SiC) used in the preparation of wear-resistant magnesium alloy layerP, for nanometer (SiC)PWarp Surface modifies, modified and obtain, be evenly distributed in coating, be (SiC) in the middle of granuleP, top layer is metallic nickel, adds inorganic Nano-particle and the compatibility of metallic matrix, overcome lacking of conventional nano chemical composite plating particle surface energy height, easily reunion Point, more conventional nano-composite plate, hence it is evident that improve particle deposition in coating, up to 20-40%.(3) present invention is a kind of Environment-friendly type is anti-corrosion, add lactic acid in plating solution used by the preparation of wear-resistant magnesium alloy layer, citrate, glycine, rare earth mix The compound complex agent being combined into and accelerator, more existing nano combined plating solution stability height, life-span length, sedimentation rate are fast.(4) originally Invent that a kind of environment-friendly type is anti-corrosion, gained Ni-P-(Ni/SiC) in the preparation of wear-resistant magnesium alloy layerPThe more former magnesium alloy of composite deposite Matrix and with under the conditions of prepared Ni-P coating, Ni-P-(SiC)PComposite deposite, corrosion resistance, wearability substantially increase.Can be wide General it is applied to electronics industry, auto industry, multiple fields such as civilian.The present invention is process for modifying surface simultaneously, reduces production Cost, extends serviceability and the life-span of magnesium alloy.
Detailed description of the invention
Embodiments of the invention are given below
Embodiment 1
Ni-P-(Ni/SiC) is prepared for matrix with AZ91D magnesium alloyPComposite deposite.
1. the pre-treatment of AZ91D magnesium alloy substrate: the magnesium alloy after polishing, oil removing is respectively put into 25ml L-1HNO3, 25ml·L-1H3PO4With 85g L-1NH4H2PO4, 40g L-1NH4Pickling in F solution, activation.
2. (SiC)PSurface is modified, modification, prepares (Ni/SiC)P。
3. the preparation of composite plating bath: take nickel sulfate 20g L-1, reducing agent 24 g L-1, lactic acid 18ml L-1, citric acid Salt 15g L-1, glycine 10g L-1, thiourea 0.8mg L-1, rare earth and surfactant etc., add distilled water preparation 1L multiple Close plating solution.
4. the preparation of composite deposite: by (Ni/SiC) after 1.5g surface modificationPIt is made into serosity, ultrasonic disperse, adds In the chemical composite plating bath prepared, stirring, after heating plating solution to set point of temperature, put into the magnesium alloy after pre-treatment and execute Plating.Plating temperature is 76 ± 2 DEG C, and the pH value in plating solution is 6.8 ± 0.2, and plating time is about 1.5-2h.
5. method of testing
In composite deposite modified (SiC)PDeposition use EDS energy disperse spectroscopy measure；The pattern of coating surface and granule dispersion journey Degree uses scanning electron microscope SEM to observe, analyzes；The wearability experiment of coating is surveyed on MM-200 fretting wear machine Examination.The adhesion of coating, according to evaluation methodology to coat binding strength in standard GB/T/T13913-12, uses file real Test method detection.Corrosion resistance uses electrochemical test system, is sealed by coating with epoxy resin, reserves 1 cm2Work area do For working electrode, saturated calomel electrode is reference electrode, and platinum electrode is auxiliary electrode, and three-electrode system is passed through electrochemical operation Stand, the NaCl solution of 3.5% is measured the dynamic potential polarization curve of coating.
6. test result
Experiment records Ni-P-(Ni/SiC)PIn composite deposite, the deposition of nano-particle is 28%, coating surface uniform and delicate, relatively In conventional composite deposite, the deposition of granule improves a lot.The wear extent of magnesium alloy substrate is 41.2mg, Ni-P chemical deposit Wear extent be 30.6mg, Ni-P-nanometer (SiC)PThe wear extent of chemical composite plating is 19.7mg, Ni-P-(Ni/SiC)PChange The wear extent learning composite deposite is 9.7mg.File laboratory method detection Ni-P-(Ni/SiC)PComposite deposite is without peeling obscission. Polarization curve before and after chemically coating nickel by magnesium-alloy shows, the corrosion potential of substrate is-1.68 V, the corruption certainly of Ni-P chemical deposit Erosion current potential is-1.03 V, and corrosion current reduces about 2.5 orders of magnitude；Ni-P-nanometer (SiC)PCertainly the corruption of chemical composite plating Erosion current potential is-0.58 V, and corrosion current reduces about 3.1 orders of magnitude；Ni-P-(Ni/SiC)PCertainly the corruption of chemical composite plating Erosion current potential is-0.12 V, and corrosion current reduces about 4.2 orders of magnitude.
From this embodiment: Ni-P-(Ni/SiC)PComposite deposite compared with similar conventional coating, corrosion resistance and resistance to Mill performance is obtained for and significantly improves.
Embodiment 2
Ni-P-(Ni/SiC) is prepared for matrix with AZ91D magnesium alloyPComposite deposite.
1. the pre-treatment of AZ91D magnesium alloy substrate sample
Magnesium alloy after polishing, oil removing is respectively put into 28ml L-1HNO3, 28ml L-1H3PO4With 90g L-1NH4H2PO4, 35g·L-1NH4Pickling in F solution, activation.
2. (SiC)PSurface modification, prepares (Ni/SiC)P.Before modified, need to be to (SiC)PCarry out pre-treatment, this process bag Include: hydrophilic treated, circulation sensitization, palladium salt activation.
3. the preparation of composite plating bath
Take nickel sulfate 25g L-1, sodium hypophosphite 30g L-1, lactic acid 23ml L-1, citrate 18g L-1, glycine 12g·L-1, thiourea 1mg L-1, rare earth and surfactant etc., add distilled water preparation 1L composite plating bath.
4. the preparation of composite deposite
By (Ni/SiC) after 2.0g surface modificationPIt is made into serosity, ultrasonic disperse so that it is moistening, joins the change prepared Learn in composite plating bath, stirring, after heating plating solution to set point of temperature, put into the magnesium alloy plating after pre-treatment.Plating temperature is 80 ± 2 DEG C, the pH value range in plating solution is 7.2 ± 0.2, and plating time is about 1.5-2h.
5. test result
Experiment records Ni-P-(Ni/SiC)PThe nanoparticle deposition amount of composite deposite is 33%, coating surface uniform and delicate, more often In rule composite deposite, the deposition of granule improves a lot.The wear extent of magnesium alloy substrate is 41.2mg, Ni-P chemical deposit Wear extent is 27.6mg, Ni-P-nanometer (SiC)PThe wear extent of chemical composite plating is 15.4mg, Ni-P-(Ni/SiC)PChemistry The wear extent of composite deposite is 7.1mg.File laboratory method detection Ni-P-(Ni/SiC)PComposite deposite is without peeling obscission.Magnesium Polarization curve before and after alloy chemical nickel-plating shows, the corrosion potential of substrate is-1.68 V, the corrosion certainly of Ni-P chemical deposit Current potential is-0.94 V, and corrosion current reduces about 2.8 orders of magnitude；Ni-P-nanometer (SiC)PCertainly the corrosion of chemical composite plating Current potential is-0.41 V, and corrosion current reduces about 3.5 orders of magnitude；Ni-P-(Ni/SiC)PCertainly the corrosion of chemical composite plating Current potential is-0.06 V, and corrosion current reduces about 4.9 orders of magnitude.
From this embodiment: Ni-P-(Ni/SiC)PComposite deposite compared with similar conventional coating, corrosion resistance and resistance to Mill performance is obtained for and significantly improves.

Claims (4)

1. environment-friendly type is anti-corrosion, a preparation method for wear-resistant magnesium alloy layer, it is characterized in that the environmental protection using Chrome-free without the low fluorine of cyanogen Technique carries out pre-treatment to magnesium alloy, removes the oxide-film of Mg alloy surface, protects matrix, promotes the deposition of nickel, avoids simultaneously Process is to environment and the harm of human body；With surface modification, modified nano silicon carbide granulate (Ni/SiC)PFor reinforcement, system Standby magnesio Ni-P-(Ni/SiC)PComposite deposite, reduces the reunion of nanoparticle, improves particle dispersion journey in coating Degree, deposition and the corrosion resistance of coating and anti-wear performance.
The most according to claim 1: a kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer, it is characterized in that: magnesium Necessary pre-treatment before alloy plating, process includes: oil removing → ultrasonic assistant chrome-free acid-wash → low fluorine activation, pickling formula: HNO320-30ml·L-1, H3PO4 20-30ml·L-1, activating recipe: NH4H2PO4 80-100 g·L-1, NH4F 30-50g· L-1。
The most according to claim 1: a kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer, it is characterized in that: (SiC)PNeed surface modification, modifying process, obtain (Ni/SiC)P。
The most according to claim 1: a kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer, it is characterized in that: plating In liquid, the concentration of each composition is: nickel sulfate 20-30g L-1, reducing agent 20-35 g L-1, lactic acid 15-30ml L-1, citric acid Salt 10-20g L-1, glycine 8-15g L-1, thiourea 0.5-1.5mg L-1Rare earth and surfactant etc..
CN201610877506.XA 2016-10-08 2016-10-08 A kind of environment-friendly type is anti-corrosion, the preparation method of wear-resistant magnesium alloy layer Pending CN106222632A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106801239A (en) * 2017-01-18 2017-06-06 东南大学 A kind of preparation method of super-hydrophobic magnesium alloy coating
CN107695626A (en) * 2017-10-09 2018-02-16 苏州宝新无缝钢管有限公司 A kind of construction technology of high-strength seamless steel pipe and products thereof and application
CN108277512A (en) * 2018-03-15 2018-07-13 新乡学院 A kind of magnesium alloy surface activating process

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CN101665930A (en) * 2009-09-18 2010-03-10 重庆理工大学 Magnesium alloy direct chemical plating NI-P-SiC plating solution formula and plating process

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106801239A (en) * 2017-01-18 2017-06-06 东南大学 A kind of preparation method of super-hydrophobic magnesium alloy coating
CN107695626A (en) * 2017-10-09 2018-02-16 苏州宝新无缝钢管有限公司 A kind of construction technology of high-strength seamless steel pipe and products thereof and application
CN108277512A (en) * 2018-03-15 2018-07-13 新乡学院 A kind of magnesium alloy surface activating process

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Application publication date: 20161214