CN105153927B - The molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating and preparation method - Google Patents
The molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating and preparation method Download PDFInfo
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- CN105153927B CN105153927B CN201510509503.6A CN201510509503A CN105153927B CN 105153927 B CN105153927 B CN 105153927B CN 201510509503 A CN201510509503 A CN 201510509503A CN 105153927 B CN105153927 B CN 105153927B
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Abstract
The present invention provides a kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating and preparation method thereof, and the component of its molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating is made up of adhesive, kollag, anti-oxidant modifying agent, dispersant, mixed solvent and modified silicasol.The present invention can overcome space polyamidoimide to bond MoS2The problem of adhesive of solid lubricant coating is easily aoxidized with lubricant by elemental oxygen, it is particularly suitable for aircraft movable part in the low rail environment in space, the anti-cold welding processing of surface lubrication of such as gear, feed screw nut, axle axle sleeve and slideway friction pair.
Description
Technical field
The invention belongs to technical field of lubricant preparation, more particularly to a kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic
Hydridization slip coating and preparation method thereof.
Background technology
Using the bonding MoS of organic adhesion agent2Solid lubricant coating is due to its excellent combination property, such as vacuum lubricity
Energy, bearing capacity, shock resistance and anticorrosive property to ground etc., the inorganic bond crisp compared to matter, anticorrosive property is poor
Solid lubricant coating, can effectively solve the problem that space vehicle movable part ground storage period anticorrosion and it is in-orbit during one's term of military service
Wear-resistant protection question.
It is follow-up to be located at the work being on active service in the low rail environment in space as a new generation of China spacecraft develops the proposition of task
Moving part needs to be subjected to the corrosion function of the space elemental oxygen of high dose.Organic adhesive MoS2Adhesive in solid lubricant coating and
Lubricant is easily aoxidized by elemental oxygen, and Sun Xiaojun etc. has found adhesive (such as polyimides) cementing solid lubricant (such as MoS2Solid
Lubricant coating) it is being subjected to 4 × 1023atom/m2After the atomic oxygen erosion of accumulated dose, adhesive (such as polyimides) forms volatility
Gas, kollag (such as lubricant molybdenum disulfide is converted into molybdenum trioxide) lose lubricity, cause coating friction durability to be dropped
Low 30%, adhesive force significantly reduces.Because the change of two kinds of key component structures and combined form in lubricant coating causes to lubricate
Coating performance is acutely degenerated, it is difficult to is used for the low rail environment in space.
The content of the invention
To solve the above problems, the present invention provides a kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating
And preparation method thereof, overcome space polyamidoimide to bond MoS2The adhesive of solid lubricant coating is easily former with lubricant
The problem of sub- oxygen oxidation.
The molybdenum-disulfide radical of the resistance to elemental oxygen organic or inorganic hydridization slip coating of the present invention, its component is by adhesive, solid
Lubricant, anti-oxidant modifying agent, dispersant, mixed solvent and modified silicasol composition.
Further, the oeverall quality being formulated using in the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating as
100% meter, wherein adhesive 30%~40%, kollag 10%~30%, modified silicasol 30%~40% are anti-oxidant
Modifying agent 1%~7%, dispersant 0.05%~1%, mixed solvent 8.85%~12.95%.
Further, the adhesive is polyamide-imide resin, and the polyamide acyl in polyamide-imide resin
The amount of solid content of imines is 18%~22%, and the viscosity characteristicses that the adhesive is determined according to dope viscosity determination method are：25℃
Under apply -4 glasss in the delivery time be 60s~80s.
Further, the kollag is molybdenum disulfide, and its average grain diameter is below 5 μm.
Further, the anti-oxidant modifying agent is antimony oxide, and its average grain diameter is below 5 μm.
Further, the dispersant is wetting dispersing agent DISPERBYK-163 of the German Bi Ke companies into production.
Further, the component of the mixed solvent is dimethylbenzene, 2- butanone and DMA, in mass ratio
For 1:1:3 mixing compositions.
Further, modified silicasol is made by following preparation method：
Step a, it is 9 according to the mol ratio of tetraethyl orthosilicate and Υ-glycidyl ether oxygen propyl trimethoxy silicane:1~
7:3 are mixed, and mixed solution is as presoma；
Step b, it is molten that acquisition presoma is diluted to presoma with the DMA of 9 times of quality of presoma
Liquid；
Step c, precursor solution under mechanical stirring, after pH=3 aqueous hydrochloric acid solution is added dropwise into precursor solution, add
Heat continuously stirs 20-30h, wherein aqueous hydrochloric acid solution and forerunner's body mass ratio are 1 to 50~60 DEG C at 50~60 DEG C:6.
The preparation method of the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating of the present invention include with
Lower step：
Step 1, after the 60% of mixed solvent gross mass, dispersant and modified silicasol being well mixed, solid profit is added
Lubrication prescription and anti-oxidant modifying agent, the 40% of mixed solvent gross mass is stirring evenly and then adding into, obtains coating mixed solution；
Step 2, coating mixed solution is carried out using zirconium oxide bead adding adhesive after ball milling is scattered, continues ball milling and disperse
Afterwards, zirconium oxide bead is filtered, obtains molybdenum-disulfide radical organic or inorganic hydridization slip coating.
Further, the molybdenum-disulfide radical organic or inorganic hydridization slip coating of preparation is applied in metal substrate surface
Film, and 60 DEG C of baking 30min are carried out successively, 110 DEG C of baking 30min, 180 DEG C of baking 30min, 300 DEG C of baking 1h, obtain resistance to original
Sub- oxygen molybdenum-disulfide radical organic or inorganic hydridization lubricant coating.
Beneficial effect：
In the film forming matter of the present invention, one side modified silicasol passes through the physisorption with dispersant, lubricant
It is coated on the surface of Molykote；Carboxyl in another aspect adhesive polyamidoimide can be with modified silicasol
Epoxide group forms hybrid systems with chemically reacting.During film-forming, organic silicon sol forms SiOx structures.In coating
During by action of atomic oxygen, SiOx is changed into SiO2, elemental oxygen can be effectively obstructed to lower floor's adhesive and Molykote
Oxidation, so as to lift the resistance to elemental oxygen performance of lubricant coating.Molybdenum-disulfide radical organic or inorganic hydridization slip coating passes through
There is low-down vacuum coefficient of friction, abrasion resistance properties and bearing capacity after solidification, at the same have concurrently good anticorrosive property and
Resistance to elemental oxygen performance.SiOx structures have the function that to strengthen adhesive by intermolecular force and chemical bonding effect, gluing
With regard to the wearability of coating can be improved after the performance enhancement of agent.
Present invention is especially suited for aircraft movable part in the low rail environment in space, as gear, guilde screw, axle-axle sleeve and
The anti-cold welding processing of surface lubrication of the friction pairs such as slideway.
Embodiment
Embodiment 1：
A kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating is organic with the molybdenum-disulfide radical of resistance to elemental oxygen
Or the oeverall quality being formulated in inorganic hybridization slip coating is 100% meter, wherein adhesive 30%, kollag 10%, is changed
Property Ludox 40%, anti-oxidant modifying agent 7%, dispersant 0.05%, mixed solvent 12.95%.Wherein, adhesive is polyamide
Imide resin, and the amount of solid content of the polyamidoimide in polyamide-imide resin is 18%, according to dope viscosity
The viscosity characteristicses that determination method determines the adhesive are：The delivery time is 60s in applying -4 glasss at 25 DEG C.The component of mixed solvent is
Dimethylbenzene, 2- butanone and DMA, it is in mass ratio 1:1:3 mixing compositions.Kollag is molybdenum disulfide,
Its average grain diameter is below 5 μm.Anti-oxidant modifying agent is antimony oxide, and its average grain diameter is below 5 μm.Dispersant is BYK-
The wetting dispersing agent trade mark abbreviation of 163, the BYK-163 for German Bi Ke companies into production, full name DISPERBYK-163.
The preparation method of the modified silicasol of the present embodiment is：Step a, according to tetraethyl orthosilicate and Υ-glycidol ether
The mol ratio of oxygen propyl trimethoxy silicane is 9:1 is mixed, and mixed solution is as presoma；Step b, with 9 times of presoma
The DMAC N,N' dimethyl acetamide of quality is diluted acquisition precursor solution to presoma；Step c, precursor solution stir in machinery
Mix down, after pH=3 aqueous hydrochloric acid solution is added dropwise into precursor solution, be heated to 60 DEG C, 30h is continuously stirred at 60 DEG C, its
Middle aqueous hydrochloric acid solution is 1 with forerunner's body mass ratio:6.
The preparation method of the molybdenum-disulfide radical of the resistance to elemental oxygen organic or inorganic hydridization slip coating of the present embodiment includes following
Step：Step 1, after the 60% of mixed solvent gross mass, dispersant and modified silicasol being well mixed, kollag is added
With anti-oxidant modifying agent, the 40% of mixed solvent gross mass is stirring evenly and then adding into, obtains coating mixed solution；Step 2, utilize
Zirconium oxide bead carries out adding adhesive after ball milling is scattered to coating mixed solution, after continuation ball milling is scattered, filters zirconium oxide bead, obtains
Obtain molybdenum-disulfide radical organic or inorganic hydridization slip coating.Wherein, molybdenum-disulfide radical organic or inorganic hydridization slip coating is in gold
Belong to substrate surface carry out film, and successively carry out 60 DEG C baking 30min, 110 DEG C baking 30min, 180 DEG C baking 30min, 300
DEG C baking 1h, obtain the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coating.
The present embodiment takes the two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, and one directly
Scratch test is carried out according to GB/T1720-1979, measures coating adhesion as 1 grade, another is first through 5 × 1023atom/m2Always
The atomic oxygen erosion of dosage, scratch test is carried out according still further to GB/T1720-1979, measure coating adhesion as 1 grade.Equally take
The two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, one directly carries out the vacuum that load is 5N
(mating plate selection G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk makees list for ball disk friction test
Direction rotates, rotating speed 0.6m/min) average vacuum coefficient of friction is 0.04, vacuum friction durability is 6.6 × 105r；Another elder generation
Through 5 × 1023atom/m2The atomic oxygen erosion of accumulated dose, then carry out vacuum sphere disk friction test (the mating plate selection that load is 5N
G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk is one direction rotation, rotating speed 0.6m/min) it is flat
Equal vacuum coefficient of friction is 0.04, and vacuum friction durability is 6.2 × 105r。
Embodiment 2：
A kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating is organic with the molybdenum-disulfide radical of resistance to elemental oxygen
Or the oeverall quality being formulated in inorganic hybridization slip coating is 100% meter, wherein adhesive 30%, kollag 30%, is changed
Property Ludox 30%, anti-oxidant modifying agent 1%, dispersant 0.15%, mixed solvent 8.85%.Wherein, adhesive is polyamide
Imide resin, and the amount of solid content of the polyamidoimide in polyamide-imide resin is 22%, according to dope viscosity
The viscosity characteristicses that determination method determines the adhesive are：The delivery time is 80s in applying -4 glasss at 25 DEG C.The component of mixed solvent is
Dimethylbenzene, 2- butanone and DMA, it is in mass ratio 1:1:3 mixing compositions.Kollag is molybdenum disulfide,
Its average grain diameter is below 5 μm.Anti-oxidant modifying agent is antimony oxide, and its average grain diameter is below 5 μm.Dispersant is BYK-
The wetting dispersing agent trade mark abbreviation of 163, the BYK-163 for German Bi Ke companies into production, full name DISPERBYK-163.
The preparation method of the modified silicasol of the present embodiment is：Step a, according to tetraethyl orthosilicate and Υ-glycidol ether
The mol ratio of oxygen propyl trimethoxy silicane is 7:3 are mixed, and mixed solution is as presoma；Step b, with 9 times of presoma
The DMAC N,N' dimethyl acetamide of quality is diluted acquisition precursor solution to presoma；Step c, precursor solution stir in machinery
Mix down, after pH=3 aqueous hydrochloric acid solution is added dropwise into precursor solution, be heated to 50 DEG C, 20h is continuously stirred at 50 DEG C, its
Middle aqueous hydrochloric acid solution is 1 with forerunner's body mass ratio:6.
The preparation method of the molybdenum-disulfide radical of the resistance to elemental oxygen organic or inorganic hydridization slip coating of the present embodiment includes following
Step：Step 1, after the 60% of mixed solvent gross mass, dispersant and modified silicasol being well mixed, kollag is added
With anti-oxidant modifying agent, the 40% of mixed solvent gross mass is stirring evenly and then adding into, obtains coating mixed solution；Step 2, utilize
Zirconium oxide bead carries out adding adhesive after ball milling is scattered to coating mixed solution, after continuation ball milling is scattered, filters zirconium oxide bead, obtains
Obtain molybdenum-disulfide radical organic or inorganic hydridization slip coating.Wherein, molybdenum-disulfide radical organic or inorganic hydridization slip coating is in gold
Belong to substrate surface carry out film, and successively carry out 60 DEG C baking 30min, 110 DEG C baking 30min, 180 DEG C baking 30min, 300
DEG C baking 1h, obtain the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coating.
The present embodiment takes the two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, and one directly
Scratch test is carried out according to GB/T1720-1979, measures coating adhesion as 1 grade, another is first through 5 × 1023atom/m2Always
The atomic oxygen erosion of dosage, scratch test is carried out according still further to GB/T1720-1979, measure coating adhesion as 1 grade.Equally take
The two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, one directly carries out the vacuum that load is 5N
(mating plate selection G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk makees list for ball disk friction test
Direction rotates, rotating speed 0.6m/min) average vacuum coefficient of friction is 0.04, vacuum friction durability atomic oxygen erosion be 5.9 ×
105r；Another is first through 5 × 1023atom/m2The atomic oxygen erosion of accumulated dose, then carry out the vacuum sphere disk friction examination that load is 5N
Test that (mating plate selection G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk does one direction rotation, turns
Fast 0.6m/min) average vacuum coefficient of friction is 0.04, vacuum friction durability is 5.7 × 105r。
Embodiment 3：
A kind of molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating is organic with the molybdenum-disulfide radical of resistance to elemental oxygen
Or the oeverall quality being formulated in inorganic hybridization slip coating is 100% meter, wherein adhesive 40%, kollag 20%, is changed
Property Ludox 30%, anti-oxidant modifying agent 1%, dispersant 0.1%, mixed solvent 8.9%.Wherein, adhesive is polyamide acyl
Imide resin, and the amount of solid content of the polyamidoimide in polyamide-imide resin is 22%, is surveyed according to dope viscosity
The viscosity characteristicses that the method for determining determines the adhesive are：The delivery time is 80s in applying -4 glasss at 25 DEG C.The component of mixed solvent is two
Toluene, 2- butanone and DMA, it is in mass ratio 1:1:3 mixing compositions.Kollag is molybdenum disulfide, its
Average grain diameter is below 5 μm.Anti-oxidant modifying agent is antimony oxide, and its average grain diameter is below 5 μm.Dispersant is BYK-
The wetting dispersing agent trade mark abbreviation of 163, the BYK-163 for German Bi Ke companies into production, full name DISPERBYK-163.
The preparation method of the modified silicasol of the present embodiment is：Step a, according to tetraethyl orthosilicate and Υ-glycidol ether
The mol ratio of oxygen propyl trimethoxy silicane is 7:3 are mixed, and mixed solution is as presoma；Step b, with 9 times of presoma
The DMAC N,N' dimethyl acetamide of quality is diluted acquisition precursor solution to presoma；Step c, precursor solution stir in machinery
Mix down, after pH=3 aqueous hydrochloric acid solution is added dropwise into precursor solution, be heated to 50 DEG C, 20h is continuously stirred at 50 DEG C, its
Middle aqueous hydrochloric acid solution is 1 with forerunner's body mass ratio:6.
The preparation method of the molybdenum-disulfide radical of the resistance to elemental oxygen organic or inorganic hydridization slip coating of the present embodiment includes following
Step：Step 1, after the 60% of mixed solvent gross mass, dispersant and modified silicasol being well mixed, kollag is added
With anti-oxidant modifying agent, the 40% of mixed solvent gross mass is stirring evenly and then adding into, obtains coating mixed solution；Step 2, utilize
Zirconium oxide bead carries out adding adhesive after ball milling is scattered to coating mixed solution, after continuation ball milling is scattered, filters zirconium oxide bead, obtains
Obtain molybdenum-disulfide radical organic or inorganic hydridization slip coating.Wherein, molybdenum-disulfide radical organic or inorganic hydridization slip coating is in gold
Belong to substrate surface carry out film, and successively carry out 60 DEG C baking 30min, 110 DEG C baking 30min, 180 DEG C baking 30min, 300
DEG C baking 1h, obtain the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coating.
The present embodiment takes the two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, and one directly
Scratch test is carried out according to GB/T1720-1979, measures coating adhesion as 2 grades, another is first through 5 × 1023atom/m2Always
The atomic oxygen erosion of dosage, scratch test is carried out according still further to GB/T1720-1979, measure coating adhesion as 2 grades.Equally take
The two identical molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coatings, one directly carries out the vacuum that load is 5N
(mating plate selection G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk makees list for ball disk friction test
Direction rotates, rotating speed 0.6m/min) average vacuum coefficient of friction is 0.03, vacuum friction durability atomic oxygen erosion be 7.2 ×
104r；Another is first through 5 × 1023atom/m2The atomic oxygen erosion of accumulated dose, then carry out the vacuum sphere disk friction examination that load is 5N
Test that (mating plate selection G10 level Φ 8mm 9Cr18 steel balls (HRC >=58), ball is fixed during experiment, and disk does one direction rotation, turns
Fast 0.6m/min) average vacuum coefficient of friction is 0.03, vacuum friction durability is 6.7 × 104r。
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Know those skilled in the art when can be made according to the present invention it is various it is corresponding change and deformation, but these corresponding change and become
Shape should all belong to the protection domain of appended claims of the invention.
Claims (5)
- A kind of 1. molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating, it is characterised in that its component by adhesive, Kollag, anti-oxidant modifying agent, dispersant, mixed solvent and modified silicasol composition；The preparation method of the modified silicasol is：Step a, it is 9 according to the mol ratio of tetraethyl orthosilicate and Υ-glycidyl ether oxygen propyl trimethoxy silicane:1~7:3 enter Row mixing, mixed solution is as presoma；Step b, acquisition precursor solution is diluted to presoma with the DMA of 9 times of quality of presoma；Step c, precursor solution under mechanical stirring, after pH=3 aqueous hydrochloric acid solution is added dropwise into precursor solution, are heated to 50~60 DEG C, 20-30h is continuously stirred at 50~60 DEG C, wherein aqueous hydrochloric acid solution and forerunner's body mass ratio are 1:6；Counted using the oeverall quality being formulated in the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating as 100%, wherein Adhesive 30%~40%, kollag 10%~30%, modified silicasol 30%~40%, anti-oxidant modifying agent 1%~ 7%, dispersant 0.05%~1%, mixed solvent 8.85%~12.95%；The adhesive is polyamide-imide resin, and solid part of the polyamidoimide in polyamide-imide resin contains Measure as 18%~22%, the viscosity characteristicses that the adhesive is determined according to dope viscosity determination method are：Flowed at 25 DEG C in applying -4 glasss It is 60s~80s to go out the time；The kollag is molybdenum disulfide, and its average grain diameter is below 5 μm；The anti-oxidant modifying agent is antimony oxide, and its average grain diameter is below 5 μm.
- 2. the molybdenum-disulfide radical of resistance to elemental oxygen hybrid slip coating as claimed in claim 1, it is characterised in that institute State the wetting dispersing agent DISPERBYK-163 that dispersant is the production of German Bi Ke companies.
- 3. the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating as claimed in claim 1, it is characterised in that institute The component for stating mixed solvent is dimethylbenzene, 2- butanone and DMA, is in mass ratio 1:1:3 mixing compositions.
- A kind of 4. preparation side of the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization slip coating as claimed in claim 3 Method, it is characterised in that comprise the following steps：Step 1, after the 60% of mixed solvent gross mass, dispersant and modified silicasol being well mixed, kollag is added With anti-oxidant modifying agent, the 40% of mixed solvent gross mass is stirring evenly and then adding into, obtains coating mixed solution；Step 2, coating mixed solution is carried out using zirconium oxide bead adding adhesive after ball milling is scattered, after continuation ball milling is scattered, Zirconium oxide bead is filtered, obtains molybdenum-disulfide radical organic or inorganic hydridization slip coating.
- A kind of 5. preparation method of the molybdenum-disulfide radical of resistance to elemental oxygen organic or inorganic hydridization lubricant coating, it is characterised in that right It is required that the molybdenum-disulfide radical organic or inorganic hydridization slip coating described in 1-3 any claims is applied in metal substrate surface Film, and 60 DEG C of baking 30min are carried out successively, 110 DEG C of baking 30min, 180 DEG C of baking 30min, 300 DEG C of baking 1h, obtain resistance to original Sub- oxygen molybdenum-disulfide radical organic or inorganic hydridization lubricant coating.
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| CN106118484A (en) * | 2016-07-18 | 2016-11-16 | 张和庆 | A kind of shock resistance high-strength composite car clutch face sheet material is with soaking coating processed |
| CN111449608A (en) * | 2020-04-02 | 2020-07-28 | 重庆金山医疗技术研究院有限公司 | Endoscope body and method for improving lubricating performance of endoscope body |
| CN116656159A (en) * | 2023-05-24 | 2023-08-29 | 兰州空间技术物理研究所 | Lubricating coating, lubricating coating and preparation method and application thereof |
| CN116814155A (en) * | 2023-08-02 | 2023-09-29 | 沈阳市航达科技有限责任公司 | High-performance alloy wire hot pier processing lubricating coating and preparation method thereof |
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| CN101070449A (en) * | 2007-06-21 | 2007-11-14 | 复旦大学 | Molybdenum-disulfide radical anti-corrosion wear-reduced coating |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Hui Inventor after: Huo Lixia Inventor after: Sang Ruipeng Inventor after: Zhang Kaifeng Inventor after: Gou Shining Inventor after: Jiang Zhao Inventor before: Huo Lixia Inventor before: Zhou Hui Inventor before: Sang Ruipeng Inventor before: Zhang Kaifeng Inventor before: Gou Shining Inventor before: Jiang Zhao |