CN108149213B - method for improving corrosion resistance of inorganic phosphate coating - Google Patents
method for improving corrosion resistance of inorganic phosphate coating Download PDFInfo
- Publication number
- CN108149213B CN108149213B CN201711481305.9A CN201711481305A CN108149213B CN 108149213 B CN108149213 B CN 108149213B CN 201711481305 A CN201711481305 A CN 201711481305A CN 108149213 B CN108149213 B CN 108149213B
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- China
- Prior art keywords
- coating
- inorganic phosphate
- phosphate coating
- voltage
- corrosion resistance
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- 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.)
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- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000000576 coating method Methods 0.000 title claims abstract description 49
- 229910052816 inorganic phosphate Inorganic materials 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005468 ion implantation Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 8
- 230000001629 suppression Effects 0.000 claims description 8
- 229910021645 metal ion Inorganic materials 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000002513 implantation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 abstract description 7
- 239000007921 spray Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/48—Ion implantation
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
Abstract
the invention discloses a method for improving the corrosion resistance of an inorganic phosphate coating, which belongs to the technical field of inorganic coating corrosion resistance. Under the vacuum degree of 2 x 10 < -4 > Pa, the cathode is triggered by high-voltage pulses and then leads out Cr metal plasma from the anode, the plasma is diffused and homogenized in a diffusion cylinder and then is led out by a three-electrode parallel beam leading-out system, and an inorganic phosphate coating is injected in an accelerating way under high voltage. The width of the micro-cracks on the surface of the coating after ion implantation is reduced, the coating is more compact, and the salt spray corrosion resistant life of the coating is prolonged by 200-300 h.
Description
Technical Field
The invention belongs to the technical field of inorganic coating corrosion prevention, and particularly relates to a method for improving the corrosion prevention performance of an inorganic phosphate coating.
background
The inorganic phosphate coating is originally used as a corrosion-resistant and high-temperature-resistant oxidation coating for a compressor blade coating, is widely used in the fields of industrial gas turbines and the like, can be used for replacing a cadmium plating technology, can perform surface corrosion protection on the premise of not damaging the fatigue performance of high-strength steel, and can also provide excellent high-temperature-resistant oxidation protection for metal materials serving in high-temperature oxidation at 600-700 ℃.
however, the inorganic phosphate can generate defects of pores, microcracks and the like in the preparation process, the protective performance of the coating on the metal matrix is reduced, and the inorganic phosphate coating is easy to peel off in the solution due to insufficient water resistance. Therefore, the key to improving the protective performance of the inorganic phosphate coating on the matrix is to solve the problems of pores, microcracks and the like generated in the preparation process.
Disclosure of Invention
the invention provides a method for improving the corrosion resistance of an inorganic phosphate coating, which adopts an ion implantation technology to directly bombard and implant high-energy metal ions into the coating, can reduce bubbles, reduce the width of microcracks and increase the surface water resistance of the coating, thereby improving the corrosion resistance of the coating.
in order to achieve the purpose, the invention adopts the following technical scheme:
A method for improving the corrosion resistance of an inorganic phosphate coating by adopting a high-energy metal ion beam injection technology comprises the following steps:
(1) Manufacturing an inorganic phosphate coating on the surface of a metal matrix by using an air spraying technology;
(2) placing the inorganic phosphate coating in high-energy metal ion source injection equipment, pumping the equipment chamber to 2 x 10 < -4 > Pa, cleaning the surface of the coating for 10min by using a Koffman ion source, and adjusting the trigger voltage to 6 kV;
(3) after arc voltage of 40V-60V is applied for 5min-10min, the trigger frequency is adjusted to be 5Hz-7Hz, and the arc current is adjusted to be 0.3A-0.5A;
(4) raising the extraction voltage to 40KV, raising the suppression voltage to 1KV, turning on a frequency control switch, and adjusting the suppression current to be within 2 mA;
(5) After all parameters are stable, adjusting the lead-out voltage to be 50KV-70 KV;
(6) And (3) carrying out Cr ion implantation on the inorganic phosphate coating, wherein the implantation time is 120-180 min.
in the steps, the inorganic phosphate coating is subjected to Cr ion implantation, and the purity of the used Cr target is 99.99%.
The invention has the beneficial effects that: the invention provides a method for improving the corrosion resistance of an inorganic phosphate coating, which adopts a high-energy metal ion beam injection technology to directly bombard and inject high-energy Cr ions into the inorganic phosphate coating to modify the surface appearance and the internal structure of the coating, reduces the width of microcracks and increases the surface water resistance of the coating through the high-temperature sintering action of the bombarded surface of the Cr ions, thereby improving the corrosion resistance of the coating, and improving the salt spray corrosion resistance life of the coating in a neutral salt spray test by 200-300 h.
Detailed Description
example 1
(1) manufacturing an inorganic phosphate coating on the surface of a metal matrix by using an air spraying technology;
(2) placing the inorganic phosphate coating in high-energy metal ion source injection equipment, pumping the equipment chamber to 2 x 10 < -4 > Pa, cleaning the surface of the coating for 10min by using a Koffman ion source, and adjusting the trigger voltage to 6 kV;
(3) After 40V arc voltage is applied for 5min, the trigger frequency is adjusted to be 5Hz, and the arc current is adjusted to be 0.3A;
(4) raising the extraction voltage to 40KV, raising the suppression voltage to 1KV, turning on a frequency control switch, and adjusting the suppression current to be within 2 mA;
(5) After all parameters are stable, adjusting the lead-out voltage to be 50 KV;
(6) And (4) carrying out Cr ion implantation on the inorganic phosphate coating, wherein the implantation time is 120 min.
the inorganic phosphate coating injected with Cr ions is subjected to a neutral salt spray experiment, so that the salt spray corrosion resistance life of the coating is prolonged by 200 hours.
Example 2
(1) manufacturing an inorganic phosphate coating on the surface of a metal matrix by using an air spraying technology;
(2) Placing the inorganic phosphate coating in high-energy metal ion source injection equipment, pumping the equipment chamber to 2 x 10 < -4 > Pa, cleaning the surface of the coating for 10min by using a Koffman ion source, and adjusting the trigger voltage to 6 kV;
(3) after applying 60V arc voltage for 10min, adjusting the trigger frequency to 7Hz and the arc current to 0.5A;
(4) Raising the extraction voltage to 40KV, raising the suppression voltage to 1KV, turning on a frequency control switch, and adjusting the suppression current to be within 2 mA;
(5) After all parameters are stable, adjusting the lead-out voltage to 70 KV;
(6) and (4) carrying out Cr ion implantation on the inorganic phosphate coating, wherein the implantation time is 180 min.
the inorganic phosphate coating injected with Cr ions is subjected to a neutral salt spray experiment, so that the salt spray corrosion resistance life of the coating is prolonged by 300 hours.
the foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (2)
1. A method for improving the corrosion resistance of an inorganic phosphate coating is characterized by comprising the following steps:
(1) Manufacturing an inorganic phosphate coating on the surface of a metal matrix by using an air spraying technology;
(2) placing the inorganic phosphate coating in high-energy metal ion source injection equipment, pumping the equipment chamber to 2 x 10 < -4 > Pa, cleaning the surface of the coating for 10min by using a Koffman ion source, and adjusting the trigger voltage to 6 kV;
(3) After arc voltage of 40V-60V is applied for 5min-10min, the trigger frequency is adjusted to be 5Hz-7Hz, and the arc current is adjusted to be 0.3A-0.5A;
(4) Raising the leading-out voltage to 40kV, raising the suppression voltage to 1kV, and adjusting the suppression current to be within 2 mA;
(5) After all parameters are stable, adjusting the leading-out voltage to be 50kV-70 kV;
(6) And (3) carrying out Cr ion implantation on the inorganic phosphate coating, wherein the implantation time is 120-180 min.
2. The method of claim 1 wherein the Cr target purity for Cr ion implantation is 99.99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481305.9A CN108149213B (en) | 2017-12-29 | 2017-12-29 | method for improving corrosion resistance of inorganic phosphate coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481305.9A CN108149213B (en) | 2017-12-29 | 2017-12-29 | method for improving corrosion resistance of inorganic phosphate coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108149213A CN108149213A (en) | 2018-06-12 |
| CN108149213B true CN108149213B (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711481305.9A Active CN108149213B (en) | 2017-12-29 | 2017-12-29 | method for improving corrosion resistance of inorganic phosphate coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108149213B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398415B (en) * | 2019-07-31 | 2022-04-22 | 南京航空航天大学 | Method for predicting service life of anticorrosive coating of bridge steel structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206386C (en) * | 2003-06-26 | 2005-06-15 | 上海交通大学 | Ion implanted composite coating film apparatus |
| CN102634765B (en) * | 2012-04-23 | 2014-11-05 | 西安交通大学 | Method for preparing amorphous carbon coating on surface of silver-plated aluminum material |
| CN103526175A (en) * | 2013-11-06 | 2014-01-22 | 武汉科技大学 | Antibacterial hard stainless steel tool and preparation method thereof |
| CN105154879B (en) * | 2015-09-23 | 2018-08-31 | 北京机械工业自动化研究所 | Pitot-static tube composite coating, preparation method and the Pitot-static tube with the composite coating |
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2017
- 2017-12-29 CN CN201711481305.9A patent/CN108149213B/en active Active
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| Publication number | Publication date |
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| CN108149213A (en) | 2018-06-12 |
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