CN1112460C - Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray - Google Patents
Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray Download PDFInfo
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- CN1112460C CN1112460C CN98101293A CN98101293A CN1112460C CN 1112460 C CN1112460 C CN 1112460C CN 98101293 A CN98101293 A CN 98101293A CN 98101293 A CN98101293 A CN 98101293A CN 1112460 C CN1112460 C CN 1112460C
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- Prior art keywords
- coating
- laser
- ceramic coating
- ceramic
- powder
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- 238000000576 coating method Methods 0.000 title claims abstract description 30
- 239000011248 coating agent Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005524 ceramic coating Methods 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 238000003723 Smelting Methods 0.000 title claims description 6
- 239000007921 spray Substances 0.000 title claims description 6
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000007750 plasma spraying Methods 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims abstract description 3
- 239000011159 matrix material Substances 0.000 claims description 14
- 238000005253 cladding Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910000989 Alclad Inorganic materials 0.000 claims description 2
- 238000010285 flame spraying Methods 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000011224 oxide ceramic Substances 0.000 claims description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 2
- 238000004372 laser cladding Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000012720 thermal barrier coating Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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Abstract
The present invention relates to a method for preparing a ceramic coating on a metal surface by laser cladding after plasma spraying. The method comprises: first, a ceramic coating is prepared on the metal surface by a plasma spraying method; then, ceramic powder is sprayed on the surface of the coating during laser radiation, and the ceramic coating is clad for the second time. The ceramic coating prepared by laser cladding by the method is characterized in that the inner part of the coating is compact, and has no pore, no crack, etc. The thickness of the coating can reach hundreds of micrometers.
Description
The present invention relates to the method that a kind of laser smelting coating after metal surface plasma spray prepares ceramic coating, belong to materials science field.
Prepare ceramic coating in the metallic surface, existent method is vapour deposition (comprising physical vapor deposition PVD and electroless plating CVD) and plasma spraying at present.The subject matter of vapour deposition existence is that sedimentation velocity is slow, and coating is thin, generally can only obtain several coatings to tens micron thickness, is difficult to realize coating purposes such as preparation thermal barrier coatings, introduces in " top coat technology " as mechanical engineering press publication in 1994.The characteristics of plasma spraying are that coating speed is fast, the efficient height, can reach big thickness (the hundreds of micron is to the millimeter level), but exist coating porosity big, in the coating between the ceramic particle, in conjunction with problems such as strong (points contact or small area bonding), abrasion property, solidity to corrosion and shock-resistance all are very limited between coating and the matrix, as nineteen ninety " Surface Engineering " magazine, 185～193 pages of introductions that No. the 3rd, the 6th volume.In recent years, many researchists attempt to improve with the laser remolten treatment process quality (eliminate hole, strengthen combination) of plasma sprayed ceramic layer, but the crack problem that coating occurs after the laser treatment never can solve.As " material technology technology ", to publish in 1997, the 4-8 page or leaf is introduced.
The objective of the invention is to study the method that a kind of laser smelting coating after metal surface plasma spray prepares ceramic coating, metal base surface preparation continuously, defectives such as fine and close, imporosity and crackle, thickness can reach the hundreds of micron to millimetre-sized high quality ceramic coating, and prepares the big area coating with higher coating efficiency.Compare with traditional CVD (Chemical Vapor Deposition) method, coat-thickness will improve a lot (improving an order of magnitude), can not only reach wear-resisting, anti-corrosion purpose, and can reach the requirement of making thermal barrier coating.Compare with plasma spraying method, coating quality will improve a lot, and defectives such as hole can not be arranged in the coating, and coating structure becomes crystal type from sintered type, and bonding strength is greatly enhanced, and does not reduce coat-thickness simultaneously.
Laser smelting coating after metal surface plasma spray of the present invention prepares the method for ceramic coating, comprises following each step:
The first step is cleaned (deoiling) and sandblast (texturing) to metallic surface (can be wrought aluminium alloy, cast aluminium alloy, the various metals that are suitable for carrying out thermospray, plasma spraying such as steel).
Second step prepared prime coat (common process, the general available nickel alclad of prime coat material) with flame spraying method, played enhancing combination and buffering effect, was beneficial to ceramic coating attached on the metallic matrix and avoid coating cracking.Prime coat thickness is 30～60 microns.
In the 3rd step, (coated material is an oxide ceramics: as Al to prepare ceramic coating with plasma spraying method
2O
3.SiO
2.Al
2O
3+ TiO
2Deng), thickness is 50～100 microns.
The 4th step in laser radiation, sprayed to above-mentioned coatingsurface with ceramic powder, ceramic coating is carried out the secondary cladding handle.In the powder-feeding method laser cladding process, at suitable laser power density (1～10 * 10
4W/cm
2), sweep velocity (3～30mm/s), powder feeding angle (45～70 °), powder mouth be from matrix distance (5～15mm), powder feed rate is (under the condition such as 0.5～10g/min), ceramics powder passes through laser beam, produce plasma arc with the laser beam interaction, under the combined action of laser and plasma arc, form ceramic coating at facula position.
Use preparation method of the present invention, can be implemented in and comprise the metallic surface coated ceramic coating that is difficult to the aluminium alloy of laser melting coating, and defectives such as coating interior solid, imporosity and crackle, coating quality is better than the obtainable quality of existing various ceramic coated technologies.Coat-thickness can reach the hundreds of micron, greater than the obtainable thickness of existing various ceramic coated technologies.
Description of drawings:
Fig. 1 is preparation technology's schematic diagram of the present invention.
Fig. 2 is the plasma sprayed coating surface topography map of prior art.
Fig. 3 is a prior art laser remolten plasma sprayed ceramic laminar surface shape appearance figure.
Fig. 4 is a laser secondary cladding ceramic layer surface topography map of the present invention.
Fig. 5 is the section structure surface topography map of laser secondary cladding ceramic layer of the present invention.
Among Fig. 1, the 1st, metallic matrix, the 2nd, plasma spraying ceramic coat, the 3rd, plasma arc, the 4th, ceramic powder, the 5th, laser beam, the 6th, secondary cladding ceramic coating.
Introduce embodiments of the invention below:
Example 1, metallic matrix: wrought aluminium alloy LY12CZ.Ceramic coating material: (METCO105SFP contains Al to the pure alumina powder
2O
399.5%), laser secondary cladding parameter: laser power 2KW, (laser power density is 1.02 * 10 to spot diameter 5mm
4W/cm
2), sweep velocity 10mm/s, powder mouth apart from matrix apart from 10mm, 60 ° of powder feeding angles, powder sending quantity 2g/min, overlapping rate 30%.
The cladding effect is seen as shown in Figure 4 and Figure 5: the coating interior solid, continuously, defectives such as imporosity and crackle, tight with matrix bond.Thickness is about 300 microns.
Example 2, metallic matrix: cast aluminium alloy ZL104.Stupalith: aluminum oxide and titanium oxide mixed powder (60%Al
2O
3+ 40%TiO
2), laser secondary cladding parameter: laser power 2.5KW, spot diameter 4mm (laser power density 1.98 * 10
4W/cm
2), sweep velocity 20mm/s, powder mouth apart from matrix apart from 10mm, 70 ° of powder feeding angles, powder sending quantity 2g/min, overlapping rate 30%.
The cladding effect: the coating interior solid, continuously, defectives such as imporosity and crackle, tight with matrix bond.Thickness is about 200 microns.
Example 3: metallic matrix: carbon steel.Stupalith: (METCO101 contains Al to grey aluminum oxide powder
2O
394%, TiO2 2.5%, SiO
22.0%, FeO
21.0%), laser secondary cladding parameter: laser power 2KW, spot diameter 4mm (laser power density 1.59 * 10
4W/cm
2), sweep velocity 10mm/s, powder mouth apart from matrix apart from 10mm, 60 ° of powder feeding angles, powder sending quantity 1.5g/min, overlapping rate 60%.
The cladding effect: the coating interior solid, continuously, defectives such as imporosity and crackle, tight with matrix bond.Thickness is about 350 microns.
Claims (2)
1, a kind of laser smelting coating after metal surface plasma spray prepares the method for ceramic coating, and this method comprises:
(1) metallic surface is cleaned and sandblast;
(2) prepare prime coat with flame spraying method, prime coat thickness is 30～60 microns;
(3) prepare ceramic coating with plasma spraying method, coat-thickness is 50～100 microns;
It is characterized in that also comprising:
(4) in laser radiation, ceramic powder is sprayed to above-mentioned coatingsurface, ceramic coating is carried out the secondary cladding handle, its processing parameter is: laser power density is 1～10 * 10
4W/cm
2, laser scanning speed is 3～30mm/ second, and the powder feeding angle is 45～70 °, and powder mouth and matrix distance are 5～15mm, and powder feed rate is 0.5～10g/ branch, overlapping rate is 30%～60%;
Above-mentioned ceramic coating is an oxide ceramics.
2, the method for claim 1 is characterized in that wherein said prime coat material is the nickel alclad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101293A CN1112460C (en) | 1998-04-17 | 1998-04-17 | Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101293A CN1112460C (en) | 1998-04-17 | 1998-04-17 | Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1202534A CN1202534A (en) | 1998-12-23 |
| CN1112460C true CN1112460C (en) | 2003-06-25 |
Family
ID=5216590
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98101293A Expired - Fee Related CN1112460C (en) | 1998-04-17 | 1998-04-17 | Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray |
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| Country | Link |
|---|---|
| CN (1) | CN1112460C (en) |
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-
1998
- 1998-04-17 CN CN98101293A patent/CN1112460C/en not_active Expired - Fee Related
Patent Citations (4)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105970144A (en) * | 2016-03-23 | 2016-09-28 | 马鞍山金晟工业设计有限公司 | Nanometer thermal-insulation coating material |
| CN105970221A (en) * | 2016-03-23 | 2016-09-28 | 马鞍山金晟工业设计有限公司 | Environmental friendly multifunctional coating material |
| CN105970220A (en) * | 2016-03-23 | 2016-09-28 | 马鞍山金晟工业设计有限公司 | Antibacterial anticorrosion coating material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1202534A (en) | 1998-12-23 |
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