CN104928612A - Co3O4-SiC nano coating material and preparation method thereof - Google Patents
Co3O4-SiC nano coating material and preparation method thereof Download PDFInfo
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- CN104928612A CN104928612A CN201510236163.4A CN201510236163A CN104928612A CN 104928612 A CN104928612 A CN 104928612A CN 201510236163 A CN201510236163 A CN 201510236163A CN 104928612 A CN104928612 A CN 104928612A
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- co3o4
- coating material
- sic
- sic nano
- nano coating
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Abstract
The invention relates to a Co3O4-SiC nano coating material and a preparation method thereof. The Co3O4-SiC nano coating material comprises the ingredients by mass percent: 50-66% of Co3O4, 28-44 parts of SiC, 1 part of TiO2, and 0.11-0.69 part of trace elements, wherein the trace elements are W, Ti, Al, Cu and Zn. The preparation method of the Co3O4-SiC nano coating material comprises the steps that nanospheres of Co3O4-SiC are prepared by utilizing a gas atomization method, and mixed with W, Ti, Al, Cu and Zn by utilizing an activating agent protection method to form nanopowder. The Co3O4-SiC nano coating material is in the form of spherical particles, is distributed uniformly, is complete in particles, and has better organization structure and better macro-performance; the hardness of the prepared Co3O4-SiC nano coating material can reach HRC54; the Co3O4-SiC nano coating material has certain hardness and wear resistance, and is higher in bonding strength and gripping force.
Description
Technical field
The present invention relates to technical field of hot, is a kind of Co specifically
3o
4-SiC nano-coating material and preparation method thereof.
Background technology
Thermospray refers to a series of process, in these processes, trickle and dispersion metal or nonmetallic coated material, with one fusing or semi-molten state, deposit to a kind of through preparation matrix surface, form certain spray deposited layer.It utilizes certain thermal source (as electric arc, plasma spraying or combustion flame etc.) that Powdered or thread metal or non-metallic material are heated to melting or semi-melting state, then be ejected into pretreated matrix surface by flame stream itself or pressurized air with certain speed, deposit and form a kind of technology with the top coat of various function.Usual utilization provides energy by fuel gas or electric arc etc.
The application of hot-spraying techniques is mainly limited to the development of thermal spraying material and processing unit, along with improving and development of hot-spraying techniques, the deficiency of thermospray material therefor performance more and more becomes the bottleneck of restriction hot-spraying techniques development, and 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 Co
3o
4-SiC nano-coating material and preparation method thereof.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of Co
3o
4-SiC nano-coating material, the mass fraction of its component and each component is Co
3o
4account for 21-38 part, SiC accounts for 45-76 part, TiO
2account for 1 part, trace element accounts for 0.21-0.82 part, described TiO
2add as additive, the mechanical property of material can be improved.
Described trace element is W, Ti, Al, Cu, Zn, and titanium metal is tough and tensile, acid resistance good, effectively can improve the hardness of nano coating, wear resistance and erosion resistance.The hardness of W is high, can significantly improve the wear resistance of nano coating.
A kind of Co
3o
4the preparation method of-SiC nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Co
3o
4the nanometer ball of-SiC;
(2) mixing of promoting agent protection method W, Ti, Al, Cu, Zn is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
The invention has the beneficial effects as follows: pattern of the present invention is spherical particle, be evenly distributed, particle is complete, there is good weave construction and good macro property.The Co that the present invention makes
3o
4the hardness of-SiC nano coating can reach HRC54, there is certain hardness and wear resistance, bonding strength, grasping force are higher, in addition, the present invention also has higher hardness and wear resistance, be applicable to resistant to elevated temperatures workpiece surface, and there are certain ferromegnetism and insulating property, can be used on some special alloy materials.Density of the present invention can reach 8.943g/cm
3, coating thickness can reach 3 millimeters, and density is well 0.63, and over-all properties is better than conventional washcoat material, and hardness is high, wear resistance is good has very large progress compared with conventional alloys material, at identical conditions, and Co
3o
4the bonding strength of-SiC nano coating is about 40 times of common coating, Co prepared by visible supersonic speed
3o
4-SiC nano coating has excellent mechanical property.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the present invention's weave construction under a scanning electron microscope and crystal morphology.
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 Co
3o
4-SiC nano-coating material, the mass fraction of its component and each component is Co
3o
4account for 21 parts, SiC accounts for 45 parts, TiO
2account for 1 part, trace element accounts for 0.21 part.
Described trace element is W, Ti, Al, Cu, Zn.
A kind of Co
3o
4the preparation method of-SiC nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Co
3o
4the nanometer ball of-SiC;
(2) mixing of promoting agent protection method W, Ti, Al, Cu, Zn is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
Embodiment two
A kind of Co
3o
4-SiC nano-coating material, the mass fraction of its component and each component is Co
3o
4account for 28 parts, SiC accounts for 55 parts, TiO
2account for 1 part, trace element accounts for 0.48 part.
Described trace element is W, Ti, Al, Cu, Zn.
A kind of Co
3o
4the preparation method of-SiC nano-coating material is identical with embodiment one.
Embodiment three
A kind of Co
3o
4-SiC nano-coating material, the mass fraction of its component and each component is Co
3o
4account for 35 parts, SiC accounts for 60 parts, TiO
2account for 1 part, trace element accounts for 0.68 part.
Described trace element is W, Ti, Al, Cu, Zn.
A kind of Co
3o
4the preparation method of-SiC nano-coating material is identical with embodiment one.
Embodiment four
A kind of Co
3o
4-SiC nano-coating material, the mass fraction of its component and each component is Co
3o
4account for 38 parts, SiC accounts for 76 parts, TiO
2account for 1 part, trace element accounts for 0.82 part.
Described trace element is W, Ti, Al, Cu, Zn.
A kind of Co
3o
4the preparation method of-SiC nano-coating material is identical with embodiment one.
Composition graphs 1, adopts supersonic spray coating technology obtained Co on the rod class workpiece being matrix with 20Co steel
3o
4-SiC 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 Co
3o
4the performance comparison experimental result of-SiC nano coating and 20Co steel matrix:
| Experimental group is numbered | Porosity (AREA%) | Bonding strength (MPa) | Microhardness (HV) |
| 1 | 0.463 | 70.4 | 935 |
| 2 | 0.636 | 66.3 | 914 |
| 3 | 0.361 | 66.7 | 921 |
| 4 | 0.742 | 59.3 | 1041 |
| Mean value | 0.555 | 65.6 | 941 |
| Comparative group | 0.573 | 65.2 | 892 |
Adopt supersonic spray coating technology obtained Co on the rod class workpiece being matrix with 20Co steel
3o
4-SiC 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 Co
3o
4the abrasion loss contrast and experiment of-SiC nano coating and 20Co steel matrix:
| Experimental group is numbered | Before wearing and tearing (g) | After wearing and tearing (g) | Abrasion loss (g) |
| 1 | 58.4683 | 58.4644 | 0.0039 |
| 2 | 58.8595 | 58.8554 | 0.0051 |
| 3 | 58.7078 | 58.7041 | 0.0037 |
| 4 | 58.2669 | 58.2611 | 0.0058 |
| Comparative group | 58.6968 | 58.6904 | 0.0064 |
From table 1 and table 2, Co
3o
4the excellent combination property of-SiC nano coating, wear resistance is good.
The present invention is applicable to supersonic spray coating, available spraying steel have: Cr12MoV, Cr12, SKD61,4Cr5MoSiV1,4Cr5W2VSi, 8Cr3 etc., also can spray some to the higher workpiece of hardness requirement or tool steel surface process, to improve workpiece surface hardness and wear resistance.
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 Co
3o
4-SiC nano-coating material, is characterized in that: the mass fraction of its component and each component is Co
3o
4account for 21-38 part, SiC accounts for 45-76 part, TiO
2account for 1 part, trace element accounts for 0.21-0.82 part;
Described trace element is W, Ti, Al, Cu, Zn.
2. a Co
3o
4the preparation method of-SiC nano-coating material, is characterized in that: comprise the following steps:
(1) aerosolization legal system is adopted to obtain Co
3o
4the nanometer ball of-SiC;
(2) mixing of promoting agent protection method W, Ti, Al, Cu, Zn is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236163.4A CN104928612A (en) | 2015-05-09 | 2015-05-09 | Co3O4-SiC nano coating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236163.4A CN104928612A (en) | 2015-05-09 | 2015-05-09 | Co3O4-SiC nano coating material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104928612A true CN104928612A (en) | 2015-09-23 |
Family
ID=54116032
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|---|---|---|---|
| CN201510236163.4A Pending CN104928612A (en) | 2015-05-09 | 2015-05-09 | Co3O4-SiC nano coating material and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496763A (en) * | 2002-10-11 | 2004-05-19 | 不二见株式会社 | High-speed flame spraying gun and spraying method using the spraying gun |
| EP1835046A1 (en) * | 2006-03-15 | 2007-09-19 | United Technologies Corporation | Wear-resistant coating |
| CN103014591A (en) * | 2012-12-18 | 2013-04-03 | 苏州赛格瑞新材料有限公司 | Method for preparing infrared radiation amorphous coating |
| CN104451514A (en) * | 2014-10-30 | 2015-03-25 | 安徽鼎恒再制造产业技术研究院有限公司 | SiC-Al2O3 nano coating and preparation method thereof |
-
2015
- 2015-05-09 CN CN201510236163.4A patent/CN104928612A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496763A (en) * | 2002-10-11 | 2004-05-19 | 不二见株式会社 | High-speed flame spraying gun and spraying method using the spraying gun |
| EP1835046A1 (en) * | 2006-03-15 | 2007-09-19 | United Technologies Corporation | Wear-resistant coating |
| CN103014591A (en) * | 2012-12-18 | 2013-04-03 | 苏州赛格瑞新材料有限公司 | Method for preparing infrared radiation amorphous coating |
| CN104451514A (en) * | 2014-10-30 | 2015-03-25 | 安徽鼎恒再制造产业技术研究院有限公司 | SiC-Al2O3 nano coating and preparation method thereof |
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Application publication date: 20150923 |