CN104831214A - Hard Fe-HfO2 nano coating material and preparation method thereof - Google Patents
Hard Fe-HfO2 nano coating material and preparation method thereof Download PDFInfo
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- CN104831214A CN104831214A CN201510233641.6A CN201510233641A CN104831214A CN 104831214 A CN104831214 A CN 104831214A CN 201510233641 A CN201510233641 A CN 201510233641A CN 104831214 A CN104831214 A CN 104831214A
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Abstract
The invention relates to a hard Fe-HfO2 nano coating material and a preparation method thereof. The hard Fe-HfO2 nano coating material comprises the following components in parts by weight: 57-78 parts of Fe, 29-38 parts of HfO2, 1 part of TiO2 and 0.21-0.98 part of microelements, wherein the microelements are Mo, Al, Ti and Cu. The preparation method comprises the following steps: preparing a nanosphere of Fe-HfO2 employing a gas atomization method; and mixing the prepared nanosphere with Mo, Al, Ti and Cu employing an active agent protection method, so as to prepare nano powder. The hardness of the prepared Fe-HfO2 nano coating material can reach HRC44; and the Fe-HfO2 nano coating material has certain hardness and anti-wear performance, is relatively high in bonding strength and gripping force, high in hardness and good in abrasive resistance, and has great progress in comparison with a traditional alloy material.
Description
Technical field
The present invention relates to technical field of hot, is a kind of hard Fe-HfO specifically
2nano-coating material and preparation method thereof.
Background technology
Thermospray is a kind of hard surface intensifying technology, is the important component part of surface engineering technology, is the new technology project that China's emphasis is promoted always.It utilizes as thermals source such as electric arc, plasma spraying or combustion flames, Powdered or thread metal or non-metallic material are heated to melting or semi-melting state, then stay itself or pressurized air to be ejected into pretreated matrix surface with certain speed by flame, deposit and form a kind of hard technology with the top coat of various function.
Be the accurate spraying method of a kind of hard new multi-purpose greatly developed after flame plating Deng particle spraying technology, it has: 1. ultrahigh-temperature characteristic, is convenient to the spraying carrying out materials with high melting point.2. the speed of jet particle is high, and coating is fine and close, and cohesive strength is high.3. owing to using rare gas element as working gas, so spray material is not oxidizable.
Along with the continuous progress of spraying equipment and people every field exploration deeply, have high performance, be applicable to the high rigidity of various mal-condition, high tenacity, and high-wearing feature more and more receives the concern of people with the spray material and corresponding spraying method with good rotproofness.
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 hard Fe-HfO
2nano-coating material and preparation method thereof.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of hard Fe-HfO
2nano-coating material, the mass fraction of its component and each component is that Fe accounts for 35-48 part, HfO
2account for 59-68 part, TiO
2account for 1 part, trace element accounts for 0.11-0.45 part, described TiO
2add as additive, hardness and the bonding strength of material can be improved.
HfO
2be the stupalith that a kind of hard has broad-band gap and high-k, resistivity against fire is strong, can improve coating high thermal resistance.
Described trace element is Mo, Al, Ti, Cu.
The pure metal of Mo is silvery white, very hard.A small amount of Mo is added among Fe, the hardness of nano coating can be significantly improved.
Al can form the oxide film that one deck prevents metallic corrosion in damp atmosphere.
Ti metal is tough and tensile, acid resistance good, effectively can improve the hardness of nano coating, wear resistance and erosion resistance.
A kind of hard Fe-HfO
2the preparation method of nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Fe-HfO
2nanometer ball;
(2) mixing of promoting agent protection method Mo, Al, Ti, Cu is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
The invention has the beneficial effects as follows: the Fe-HfO that the present invention makes
2the hardness of nano coating can reach HRC44, has certain hardness and wear resistance, and bonding strength, grasping force are higher, and density can reach 6.68g/cm
3, coating thickness can reach 4 millimeters, and density is well 0.57, and over-all properties of the present invention is better than conventional washcoat material, and hardness is high, wear resistance good, has very large progress compared with conventional alloys material, at identical conditions, and Fe-HfO
2the bonding strength of nano coating is about 1.9 times of common coating.
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 hard Fe-HfO
2nano-coating material, the mass fraction of its component and each component is that Fe accounts for 35 parts, HfO
2account for 59 parts, TiO
2account for 1 part, trace element accounts for 0.11 part.
Described trace element is Mo, Al, Ti, Cu.
A kind of hard Fe-HfO
2the preparation method of nano-coating material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain Fe-HfO
2nanometer ball;
(2) mixing of promoting agent protection method Mo, Al, Ti, Cu is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
Embodiment two
A kind of hard Fe-HfO
2nano-coating material, the mass fraction of its component and each component is that Fe accounts for 38 parts, HfO
2account for 65 parts, TiO
2account for 1 part, trace element accounts for 0.35 part.
Described trace element is Mo, Al, Ti, Cu.
A kind of hard Fe-HfO
2the preparation method of nano-coating material, with embodiment one.
Embodiment three
A kind of hard Fe-HfO
2nano-coating material, the mass fraction of its component and each component is that Fe accounts for 43 parts, HfO
2account for 64 parts, TiO
2account for 1 part, trace element accounts for 0.4 part.
Described trace element is Mo, Al, Ti, Cu.
A kind of hard Fe-HfO
2the preparation method of nano-coating material, with embodiment one.
Embodiment four
A kind of hard Fe-HfO
2nano-coating material, the mass fraction of its component and each component is that Fe accounts for 48 parts, HfO
2account for 68 parts, TiO
2account for 1 part, trace element accounts for 0.45 part.
Described trace element is Mo, Al, Ti, Cu.
A kind of hard Fe-HfO
2the preparation method of nano-coating material, with embodiment one.
Adopt plasma spraying technology obtained Fe-HfO on the rod class workpiece being matrix with 20Co steel
2nano 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 1Fe-HfO
2the performance comparison experimental result of nano coating and 20Co steel matrix:
| Experimental group is numbered | Porosity (AREA%) | Bonding strength (MPa) | Microhardness (HV) |
| 1 | 0.633 | 76.2 | 646 |
| 2 | 0.527 | 79.4 | 532 |
| 3 | 0.461 | 81.7 | 687 |
| 4 | 0.445 | 84.2 | 642 |
| Mean value | 0.517 | 80.4 | 646 |
| Comparative group | 0.913 | 42.6 | 361 |
Adopt plasma spraying technology obtained Fe-HfO on the rod class workpiece being matrix with 20Co steel
2coating, the abrasion loss contrast and experiment of the matrix with described coating and the matrix without described coating is in table 2:
Table 2Fe-HfO
2the abrasion loss contrast and experiment of nano coating and 20Co steel matrix:
| Experimental group is numbered | Before wearing and tearing (g) | After wearing and tearing (g) | Abrasion loss (g) |
| 1 | 63.6638 | 63.6574 | 0.0064 |
| 2 | 63.3843 | 63.3788 | 0.0055 |
| 3 | 63.9984 | 63.9921 | 0.0063 |
| 4 | 63.6948 | 63.6879 | 0.0069 |
| Comparative group | 63.6538 | 63.6347 | 0.0162 |
From table 1 and table 2, Fe-HfO
2the excellent combination property of nano coating, wear resistance is good.
The present invention is applicable to plasma spraying, and available spraying steel have: 2Cr13,4Cr13,9Cr18,4Cr5W2VSi, 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 hard Fe-HfO
2nano-coating material, is characterized in that: the mass fraction of its component and each component is that Fe accounts for 35-48 part, HfO
2account for 59-68 part, TiO
2account for 1 part, trace element accounts for 0.11-0.45 part;
Described trace element is Mo, Al, Ti, Cu.
2. a hard Fe-HfO
2the preparation method of nano-coating material, is characterized in that: comprise the following steps:
(1) aerosolization legal system is adopted to obtain Fe-HfO
2nanometer ball;
(2) mixing of promoting agent protection method Mo, Al, Ti, Cu is adopted by nanometer ball obtained in step (1) to obtain nanometer powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233641.6A CN104831214A (en) | 2015-05-09 | 2015-05-09 | Hard Fe-HfO2 nano coating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233641.6A CN104831214A (en) | 2015-05-09 | 2015-05-09 | Hard Fe-HfO2 nano coating material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104831214A true CN104831214A (en) | 2015-08-12 |
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ID=53809407
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510233641.6A Pending CN104831214A (en) | 2015-05-09 | 2015-05-09 | Hard Fe-HfO2 nano coating material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917502A (en) * | 2011-11-10 | 2014-07-09 | 阿尔斯通技术有限公司 | High temperature thermal barrier coating |
| CN104294205A (en) * | 2014-09-11 | 2015-01-21 | 芜湖鼎瀚再制造技术有限公司 | ZrO2-HfO2 coating and preparation method thereof |
| CN104388876A (en) * | 2014-10-30 | 2015-03-04 | 安徽鼎恒再制造产业技术研究院有限公司 | WC-HfO2 nano coating and preparation method thereof |
-
2015
- 2015-05-09 CN CN201510233641.6A patent/CN104831214A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103917502A (en) * | 2011-11-10 | 2014-07-09 | 阿尔斯通技术有限公司 | High temperature thermal barrier coating |
| CN104294205A (en) * | 2014-09-11 | 2015-01-21 | 芜湖鼎瀚再制造技术有限公司 | ZrO2-HfO2 coating and preparation method thereof |
| CN104388876A (en) * | 2014-10-30 | 2015-03-04 | 安徽鼎恒再制造产业技术研究院有限公司 | WC-HfO2 nano coating and preparation method thereof |
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Application publication date: 20150812 |
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