CN107893210A - A kind of ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method - Google Patents
A kind of ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method Download PDFInfo
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- CN107893210A CN107893210A CN201711154164.XA CN201711154164A CN107893210A CN 107893210 A CN107893210 A CN 107893210A CN 201711154164 A CN201711154164 A CN 201711154164A CN 107893210 A CN107893210 A CN 107893210A
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- zinc
- aluminium
- powder
- ferrous materials
- cementation
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Classifications
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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
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
Abstract
The invention discloses a kind of ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method.The raw material that uses and composition proportion by weight percentage for：Zinc powder 70% 94%, aluminium powder 5% 25%, ammonium chloride 1% 5%.Zinc powder is subjected to heat treatment in advance, is well mixed after then above-mentioned raw materials are weighed in proportion, produces ferrous materials low temperature zinc-aluminium agent for co-cementation.Ferrous materials are closely embedded in the agent for co-cementation researched and developed of the present invention, vacuumized after sealing, in certain temperature held for some time, after being cooled to room temperature, you can form one layer of co-osmosized coating rich in zinc and aluminium in steel material surface.The ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method that the present invention develops, diffusion medium material composition is simple, easily well mixed, permeation temperature is low, saves the energy, penetration enhancer does not lump, it can be used for multiple times, ferrous materials sample is indeformable, and co-penetration layer thickness is uniform, surface soap-free emulsion polymeization thing, there is broad prospect of application.
Description
Technical field
The invention belongs to Surface Engineering field, is related to a kind of metal material surface chemical heat treatment method, and in particular to steel
The preparation method of iron surface zinc-aluminized penetration enhancer and co-penetration layer.
Background technology
Powder pack cementation technology is that powder penetrating agent and ferrous materials are collectively disposed in closed container, is heated to a constant temperature
Held for some time after degree, steel material surface is set to form a kind of method of coating.Compared with other methods, powder pack cementation work
Skill has simple to operate, and coating uniform, thickness is controllable, the advantages that available for complex-shaped part.
Coating prepared by powder zincizing/aluminum technology is primarily to improve the corrosion resistance of ferrous materials.With science skill
The development of art, the requirement more and more higher to steel material surface decay resistance, the coating penetrated into obtained by single-element is not
Requirement can be fully met, the coating extensive use penetrated into obtained by two kinds of elements.Permeation can absorb each single-element and ooze
The advantages of, compensate its defect, steel material surface is obtained more preferable combination property.Chinese patent (Publication No.
CN1428454A, publication date are on July 9th, 2003) a kind of steel product zinc-aluminium embedding co-penetrating method and its penetration enhancer are disclosed, its
3-10 hours are incubated at 400 DEG C -600 DEG C using powder embedding zinc-aluminized method, Aluminum Coating is prepared on steel product surface,
The mass percent of the penetration enhancer each component used is：Zinc powder 30%-60%, aluminium powder (or zinc aluminium alloy powder) 2%-15% are living
Agent 0.1%-2.0%, surplus are aluminum oxide.(Publication No. CN102041472A, publication date are May 4 in 2011 to Chinese patent
Day) disclose a kind of surface treatment method of steel structural part, the mass fraction of the penetration enhancer each component used for：Zinc powder 40-50
Part, aluminium powder 8-12 parts, NH4Cl 1-2 parts, α-Al2O337-51 parts.D.Chaliampalias et al. is using powder embedding zinc-aluminium
Co-permeation method is incubated 4 hours at 400 DEG C, and in steel material surface prepares coating, the mass percent of penetration enhancer each component used is：
Zinc powder 50%, aluminium powder 10%, ammonium chloride 2.0%, aluminum oxide 38% (D.Chaliampalias, M.Papazoglou,
S.Tsipas,E.Pavlidou,S.Skolianos,G.Stergioudis,G.Vourlias.The effect of Al and
Cr additions on pack cementation zinc coatings,Applied Surface Science,2010,
256:3618-3623.).At present, the existing preparation method on steel surface zinc-aluminium embedding co-penetrating coating, permeation temperature are big
All it is not less than 400 DEG C, and the energy, and waste of resource is both wasted containing largely alumina filled dose in diffusion medium.And close
In the research then rarely seen report of less than 400 DEG C filler-free zinc-aluminizeds.
The present invention researches and develops steel low-temperature zinc-aluminized penetration enhancer, the raw material of use and composition proportion by weight percentage first
For：Zinc powder 70%-94%, aluminium powder 5%-25%, ammonium chloride 1%-5%.The key of the zinc-aluminized penetration enhancer is zinc in advance
Powder is heat-treated, and is allowed to activate.Then it is well mixed after the zinc powder after heat treatment is weighed in proportion with aluminium powder, ammonium chloride,
Produce steel low-temperature zinc-aluminized penetration enhancer.Ferrous materials are closely embedded in the agent for co-cementation that the present invention researches and develops, taken out after sealing
Vacuum, in certain temperature held for some time, after being cooled to room temperature, you can form one layer of being total to rich in zinc and aluminium in steel surface
Impregnation coating.A kind of the ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method that the present invention develops, diffusion medium material composition is simple,
Easily well mixed, permeation process temperature is low, saves the energy, and penetration enhancer does not lump, can be used for multiple times, and ferrous materials sample is constant
Shape, co-penetration layer thickness is uniform, surface soap-free emulsion polymeization thing, has broad prospect of application.
The content of the invention
The technical problem to be solved in the present invention is to develop a kind of penetration enhancer of steel low-temperature zinc-aluminized, and provides one kind low
The method that steel material surface zinc-aluminized layer is prepared under temperature.
In order to solve the above technical problems, the technical solution adopted by the present invention is：The steel low-temperature zinc-aluminium that the present invention researches and develops is total to
Penetration enhancer, it is characterised in that the raw material that uses and composition proportion by weight percentage for：Zinc powder 70%-94%, aluminium powder 5%-
25%, ammonium chloride 1%-5%.The key of the zinc-aluminized penetration enhancer is in advance to be heat-treated zinc powder, is allowed to activate.Then
It is well mixed after zinc powder after heat treatment is weighed in proportion with aluminium powder, ammonium chloride, produces steel low-temperature zinc-aluminized penetration enhancer.This
Invent a kind of method for preparing steel material surface zinc-aluminized layer at low temperature of research and development, it is characterised in that by ferrous materials
It is embedded in the agent for co-cementation containing zinc powder and aluminium powder that the present invention researches and develops, vacuumizes after sealing, be incubated at 360 DEG C -420 DEG C
3-12 hours, after being cooled to room temperature, you can form one layer of co-osmosized coating rich in zinc and aluminium in steel surface.
The present invention concrete technology flow process be：
(1) raw material are prepared first, raw material are zinc powder, aluminium powder and ammonium chloride, and the zinc powder is pure to analyze, zinc content >=
95wt.%, particle diameter 200-300nm, the aluminium powder aluminum content >=99wt.%, granularity are 100-150 mesh, the ammonium chloride
Granularity is 10-50 mesh；
(2) zinc powder is fitted into sealing steel vessel, the sealing steel vessel filled is placed in vacuum drying oven, vacuumized
After degree extremely -0.2MPa, 415 DEG C -430 DEG C are heated to, 4-12 hours is incubated, then cools to room temperature with the furnace；
(3) zinc powder is taken out from vacuum drying oven, with mortar grinder, filters out the zinc powder that granularity is 100-250 mesh, it is standby；
(4) zinc powder after the heat treatment for obtaining step (3) and raw material aluminium powder and ammonium chloride are zinc powder by weight percentage
70%-94%, aluminium powder 5%-25%, ammonium chloride 1%-5% ratio mix after weighing, and are mixed with mortar grinder with guarantee within 30 minutes
Close uniform, you can obtain the penetration enhancer of steel low-temperature zinc-aluminized；
(5) agent for co-cementation that step (4) obtains and ferrous materials sample to be oozed are fitted into steel vessel jointly, make permeation
Penetration enhancer is closely embedded in around steel sample, and steel vessel is sealed, and is subsequently placed in vacuum drying oven, suction to -0.2MPa
Afterwards, 360 DEG C -420 DEG C are heated to, is incubated 3-12 hours, stops heating, after cooling to room temperature with the furnace, ferrous materials is taken out,
Steel material surface obtains one layer of coating rich in zinc and aluminium.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) permeation temperature is low, will not cause the deformation of ferrous materials, while saves the energy；
(2) diffusion medium material composition is simple, easily configuration, easily well mixed；
(3) permeation temperature is relatively low, and penetration enhancer does not lump, and can be used for multiple times；
(4) co-penetration layer thickness is uniform, surface soap-free emulsion polymeization thing.
Brief description of the drawings
Fig. 1 is the 42CrMo steel using low temperature zinc-aluminium agent for co-cementation of the present invention in 380 DEG C of insulations, the 4 hours surface zinc obtained
Aluminum common impregnation coating cross-section photograph.
Specific embodiment
The present invention is elaborated below in conjunction with the accompanying drawings：
The purpose of the present invention is to develop a kind of penetration enhancer of steel low-temperature zinc-aluminized, and provides one kind and prepare steel at low temperature
The method of iron material surface zinc-aluminized layer.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：Steel low-temperature zinc-aluminized penetration enhancer is researched and developed first, is adopted
Raw material and composition proportion by weight percentage are：Zinc powder 70%-94%, aluminium powder 5%-25%, ammonium chloride 1%-5%.
The key of the zinc-aluminized penetration enhancer is in advance to be heat-treated zinc powder, is allowed to activate.Then by the zinc powder after heat treatment with
Aluminium powder, ammonium chloride are well mixed after weighing in proportion, produce steel low-temperature zinc-aluminized penetration enhancer.Ferrous materials are embedded in this hair
In the agent for co-cementation of bright research and development, vacuumized after sealing, in certain temperature held for some time, after being cooled to room temperature, you can in steel
Iron material surface forms one layer of co-osmosized coating rich in zinc and aluminium.
Specific embodiment：
For the zinc-aluminized penetration enhancer and co-infiltrating method of 42CrMo steel, comprise the steps：
(1) raw material are prepared first, raw material are zinc powder, aluminium powder and ammonium chloride, and the zinc powder is pure to analyze, zinc content >=
95wt.%, particle diameter 200-300nm, the aluminium powder aluminum content >=99wt.%, granularity are 100-150 mesh, the ammonium chloride
Granularity is 10-50 mesh；
(2) zinc powder is fitted into closed container, the sealing container filled is placed in vacuum drying oven, suction to-
After 0.2MPa, 420 DEG C are heated to, after being incubated 6 hours, stops heating, cools to room temperature with the furnace；
(3) zinc powder is taken out from vacuum drying oven, with mortar grinder, filters out the zinc powder that granularity is 150-250 mesh, it is standby；
(4) zinc powder after the heat treatment that will be obtained through step (3) and raw material aluminium powder and ammonium chloride press 88：10：2 weight ratio
Mix, be well mixed with mortar grinder with guarantee within 30 minutes, you can obtain the penetration enhancer of steel low-temperature zinc-aluminized after weighing；
(5) agent for co-cementation that step (4) obtains and 42CrMo steel curved beams are fitted into steel vessel jointly, make agent for co-cementation
Closely be embedded in around 42CrMo steel curved beams, steel vessel sealed, is subsequently placed in tube type vacuum stove, suction to-
After 0.2MPa, 380 DEG C are heated to, is incubated 4 hours, stops heating, after cooling to room temperature with the furnace, takes out the examination of 42CrMo steel
Sample, zinc-aluminized coating is obtained on 42CrMo steel curved beams surface (see Fig. 1).The zinc-aluminized uniform coating thickness, surface is without viscous
Tie thing.Because permeation temperature is low, the deformation of ferrous materials will not be caused, saves the energy, penetration enhancer does not lump, can be used for multiple times.
Meanwhile diffusion medium material composition is simple, easily configuration is easily well mixed.
Claims (2)
1. a kind of ferrous materials low temperature zinc-aluminium agent for co-cementation, it is characterised in that raw material are zinc powder, aluminium powder and ammonium chloride, the zinc
Powder is analyzes pure, zinc content >=95wt.%, and granularity is 150-250 mesh, the aluminium powder aluminum content >=99wt.%, granularity 100-
150 mesh, the ammonium chloride granularity are 10-50 mesh, and zinc powder will pass through heat treatment in advance, and concrete technology flow process is：
(1) zinc powder is fitted into closed steel vessel, the sealing steel vessel filled is placed in vacuum drying oven, suction
After to -0.2MPa, 415 DEG C -430 DEG C are heated to, is incubated 6-12 hours, then stops heating, cools to room temperature with the furnace；
(2) zinc powder is taken out from vacuum drying oven, with mortar grinder, filters out the zinc powder that granularity is 100-250 mesh；
(3) zinc powder after the heat treatment for obtaining step (2) and raw material aluminium powder and ammonium chloride are zinc powder 70%- by weight percentage
94%th, aluminium powder 5%-25%, ammonium chloride 1%-5% ratio are well mixed after weighing, and oozing for steel low-temperature zinc-aluminized is made
Agent.
2. a kind of ferrous materials low temperature zinc-aluminium co-infiltrating method, it is characterised in that by ferrous materials with being obtained in the claims in the present invention 1
The penetration enhancer of the steel low-temperature zinc-aluminized obtained is fitted into steel vessel, agent for co-cementation is closely embedded in ferrous materials sample week
Enclose, steel vessel is sealed, be subsequently placed in vacuum drying oven, after suction to -0.2MPa, be heated to 360 DEG C -420 DEG C, insulation
3-12 hours, stop heating, after cooling to room temperature with the furnace, ferrous materials are taken out, obtaining one layer in steel material surface is rich in
The coating of zinc and aluminium.
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| CN201711154164.XA CN107893210A (en) | 2017-11-20 | 2017-11-20 | A kind of ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method |
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| CN201711154164.XA CN107893210A (en) | 2017-11-20 | 2017-11-20 | A kind of ferrous materials low temperature zinc-aluminium agent for co-cementation and co-infiltrating method |
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| CN107893210A true CN107893210A (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993231A (en) * | 2019-11-25 | 2020-04-10 | 合肥工业大学 | Surface-alloyed high-corrosion-resistance sintered NdFeB magnet and preparation method thereof |
| CN114703448A (en) * | 2022-02-18 | 2022-07-05 | 南通昊成钢结构工程有限公司 | Multifunctional composite coating on surface of steel structure and coating process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993231A (en) * | 2019-11-25 | 2020-04-10 | 合肥工业大学 | Surface-alloyed high-corrosion-resistance sintered NdFeB magnet and preparation method thereof |
| CN114703448A (en) * | 2022-02-18 | 2022-07-05 | 南通昊成钢结构工程有限公司 | Multifunctional composite coating on surface of steel structure and coating process thereof |
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