CN104846319A - Fe-TiO2-Co nano coating material and preparation method thereof - Google Patents
Fe-TiO2-Co nano coating material and preparation method thereof Download PDFInfo
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- CN104846319A CN104846319A CN201510236537.2A CN201510236537A CN104846319A CN 104846319 A CN104846319 A CN 104846319A CN 201510236537 A CN201510236537 A CN 201510236537A CN 104846319 A CN104846319 A CN 104846319A
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Abstract
The invention relates to a Fe-TiO2-Co nano coating material and a preparation method thereof. The Fe-TiO2-Co nano coating material comprises the components in parts by mass: 64-75 parts of Fe, 16-25 parts of TiO2, 5 parts of Co, 1 part of Al2O3 and 0.37-0.68 parts of microelements, wherein the microelements are C, Mn, B, Sn and Mo. The preparation method comprises the following steps: preparing Fe-TiO2-Co nanospheres by adopting a gas atomization method; mixing the prepared nanospheres with C, Mn, B, Sn and Mo to prepare nanopowder by adopting an active agent protection method. The Fe-TiO2-Co nano coating material provided by the invention is superior to traditional coating materials, and is high in hardness and good in wear resistance. Compared with traditional alloy materials, the Fe-TiO2-Co nano coating material has great progress. Under the same condition, the abrasion loss of common materials is 2.5 times the abrasion loss of the Fe-TiO2-Co coating.
Description
Technical field
The present invention relates to technical field of hot, is a kind of Fe-TiO specifically
2-Co nano-coating material and preparation method thereof.
Background technology
Thermospray is by the spray material of molten state, makes its atomised jet on piece surface by high velocity air, forms a kind of metallic surface working method of sprayed coating.We are special working-surface " coating ", and manufacturing the method for work of coating " thermospray ", it is the general name adopting various thermal source to carry out spraying and surfacing.
Hot-spraying techniques has following several respects outstanding advantages: 1, Surface Engineering and being combined in design of material of multiple matrix material have obvious advantage; 2, the chemical composition of material can be adjusted easily; 3, the matrix material of special construction performance can be had by dynamic formation; 4, the compound of multiple material and multiple technologies can obtain excellent performance.
Based on this, therefore the research of thermal spraying material is the deciding factor of 21 century thermospray development, is also the driving of hot-spraying techniques development.
The material bond strength that traditional spraying technology uses is poor, void content is high, wear no resistance.Novel hot spray material needs to make up these defects, and adopt new technology, novel method, new formula is obtained has high rigidity, high-wearing feature, high corrosion resistance, heterogeneous microstructure is even, and the excellent material of comprehensive mechanical property becomes the urgent demand of people.
Summary of the invention
Poor in order to solve conventional coatings wear resistance, the problems such as hardness is lower, the invention provides a kind of Fe-TiO
2-Co nano-coating material and preparation method thereof.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of Fe-TiO
2-Co nano-coating material, the mass fraction of its component and each component is that Fe accounts for 64-75 part, TiO
2account for 16-25 part, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.37-0.68 part, described Al
2o
3add as additive, material wear ability and hardness can be improved.
TiO
2adhesivity good, coating difficult drop-off, and TiO
2heat stability is good.
Co is the glossiness Steel Grey metal of tool, harder and crisp, water effect of getting along well at normal temperatures, also very stable in malaria.It is the important source material of producing refractory alloy, Wimet, anti-corrosion alloy, magneticalloy and various cobalt salt that the physics of Co, chemical property determine it.Cobalt base alloy or cobalt-containing alloy steel comprehensive mechanical property are excellent, are to be commonly used for the heat-resistant part of various high loading and the important meals material of nuclear industry in the blade of gas turbine, impeller, conduit, jet engine, rocket engine, the parts of guided missile and chemical industry equipment.
Described trace element is C, Mn, B, Sn, Mo.
B can react with Sn at 600 DEG C ~ 1000 DEG C; 1000 DEG C ~ 1400 DEG C with C effect, under high temperature B also with many metals and reactive metal oxide, formation metal boride.These compounds are high rigidity, refractory, high conductivity and chemically inert material normally, often has special character.
The pure metal of Mo is silvery white, very hard.A small amount of Mo is added among nano coating, nano coating hardness can be improved.
A kind of Fe-TiO
2the preparation method of-Co nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Fe-TiO
2the nanometer ball of-Co;
(2) nanometer ball obtained in step (1) employing promoting agent protection method mixed C, Mn, B, Sn, Mo are obtained nanometer powder.
The invention has the beneficial effects as follows: the hardness of coating of the present invention reaches HRC45, coat-thickness can reach 3 millimeters, and coating density is at 6.96g/cm
3.Intensity of the present invention is good, wear-resisting, and wide material sources are cheap, on the available component of machine worked at normal temperatures, makes the hard-surface coating of sliding surface and the repairing sizes of abrading section.
The present invention is better than conventional washcoat material, and hardness is high, wear resistance good, has larger progress compared with conventional alloys material.The abrasion loss of common material is Fe-TiO at identical conditions
2about 2.5 times of-Co coating abrasion amount.
Embodiment
The technique means realized to make the present invention and creation characteristic are easy to understand, and set forth further below to the present invention.
Embodiment one:
A kind of Fe-TiO
2-Co nano-coating material, the mass fraction of its component and each component is that Fe accounts for 64 parts, TiO
2account for 16 parts, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.37 part.
Described trace element is C, Mn, B, Sn, Mo.
A kind of Fe-TiO
2the preparation method of-Co nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Fe-TiO
2the nanometer ball of-Co;
(2) nanometer ball obtained in step (1) employing promoting agent protection method mixed C, Mn, B, Sn, Mo are obtained nanometer powder.
Embodiment two:
A kind of Fe-TiO
2-Co nano-coating material, the mass fraction of its component and each component is that Fe accounts for 68 parts, TiO
2account for 18 parts, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.45 part.
Described trace element is C, Mn, B, Sn, Mo.
A kind of Fe-TiO
2the preparation method of-Co nano-coating material, with embodiment one.
Embodiment three:
A kind of Fe-TiO
2-Co nano-coating material, the mass fraction of its component and each component is that Fe accounts for 72 parts, TiO
2account for 22 parts, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.58 part.
Described trace element is C, Mn, B, Sn, Mo.
A kind of Fe-TiO
2the preparation method of-Co nano-coating material, with embodiment one.
Embodiment four:
A kind of Fe-TiO
2-Co nano-coating material, the mass fraction of its component and each component is that Fe accounts for 75 parts, TiO
2account for 25 parts, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.68 part.
Described trace element is C, Mn, B, Sn, Mo.
A kind of Fe-TiO
2the preparation method of-Co nano-coating material, with embodiment one.
Adopt plasma spraying technology obtained Fe-TiO on the rod class workpiece being matrix with 20Co steel
2-Co nano coating, the matrix with described coating and bonding strength, microhardness, void content and the abrasive wear resistance contrast and experiment without the matrix of described coating are in table 1:
Table 1 Fe-TiO
2the performance comparison experimental result of-Co nano coating and 20Co steel matrix:
| Experimental group is numbered | Porosity (AREA%) | Bonding strength (MPa) | Microhardness (HV) |
| 1 | 0.573 | 80.4 | 563 |
| 2 | 0.674 | 83.6 | 622 |
| 3 | 0.562 | 79.2 | 581 |
| 4 | 0.51O | 78.6 | 510 |
| Mean value | 0.580 | 80.4 | 569 |
| Comparative group | 0.964 | 53.3 | 357 |
Adopt plasma spraying technology obtained Fe-TiO on the rod class workpiece being matrix with 20Co steel
2-Co coating, the abrasion loss contrast and experiment of the matrix with described coating and the matrix without described coating is in table 2:
Table 2 Fe-TiO
2the abrasion loss contrast and experiment of-Co nano coating and 20Co steel matrix:
| Experimental group is numbered | Before wearing and tearing (g) | After wearing and tearing (g) | Abrasion loss (g) |
| 1 | 47.5632 | 47.5576 | 0.0056 |
| 2 | 47.6543 | 47.6465 | 0.0078 |
| 3 | 47.5622 | 47.5547 | 0.0075 |
| 4 | 47.4573 | 47.3571 | 0.0067 |
| Comparative group | 47.6756 | 47.6578 | 0.00178 |
From table 1 and table 2, Fe-TiO
2the excellent combination property of-Co nano coating, wear resistance is good.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification sheets; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. a Fe-TiO
2-Co nano-coating material, is characterized in that: the mass fraction of its component and each component is that Fe accounts for 64-75 part, TiO
2account for 16-25 part, Co accounts for 5 parts, Al
2o
3account for 1 part, trace element accounts for 0.37-0.68 part;
Described trace element is C, Mn, B, Sn, Mo.
2. a Fe-TiO
2the preparation method of-Co nano-coating material, is characterized in that: comprise the following steps:
(1) aerosolization legal system is adopted to obtain Fe-TiO
2the nanometer ball of-Co;
(2) nanometer ball obtained in step (1) employing promoting agent protection method mixed C, Mn, B, Sn, Mo are obtained nanometer powder.
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|---|---|---|---|
| CN201510236537.2A CN104846319A (en) | 2015-05-09 | 2015-05-09 | Fe-TiO2-Co nano coating material and preparation method thereof |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201510236537.2A CN104846319A (en) | 2015-05-09 | 2015-05-09 | Fe-TiO2-Co nano coating material and preparation method thereof |
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|---|---|
| CN104846319A true CN104846319A (en) | 2015-08-19 |
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ID=53846295
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|---|---|---|---|
| CN201510236537.2A Pending CN104846319A (en) | 2015-05-09 | 2015-05-09 | Fe-TiO2-Co nano coating material and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290402A (en) * | 2012-02-23 | 2013-09-11 | 财团法人工业技术研究院 | Method for providing protective and thermally conductive coatings |
| CN104264093A (en) * | 2014-09-11 | 2015-01-07 | 芜湖鼎瀚再制造技术有限公司 | Fe-Gr-Ni nanometer coating and preparation method thereof |
-
2015
- 2015-05-09 CN CN201510236537.2A patent/CN104846319A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290402A (en) * | 2012-02-23 | 2013-09-11 | 财团法人工业技术研究院 | Method for providing protective and thermally conductive coatings |
| CN104264093A (en) * | 2014-09-11 | 2015-01-07 | 芜湖鼎瀚再制造技术有限公司 | Fe-Gr-Ni nanometer coating and preparation method thereof |
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Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |