CN104928534A - Ni-Cr-B-Mo nanomaterial and preparing method thereof - Google Patents
Ni-Cr-B-Mo nanomaterial and preparing method thereof Download PDFInfo
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- CN104928534A CN104928534A CN201510353814.8A CN201510353814A CN104928534A CN 104928534 A CN104928534 A CN 104928534A CN 201510353814 A CN201510353814 A CN 201510353814A CN 104928534 A CN104928534 A CN 104928534A
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Abstract
The invention relates to a Ni-Cr-B-Mo nanomaterial and a preparing method thereof. The Ni-Cr-B-Mo nanomaterial comprises, by weight, 61 to 69 parts of Ni, 18 to 31 parts of Cr, 8 parts of B, 5 parts of Mo, 0.15 part of C, 0.5 part of Si, 0.5 part of Mn, and 0.85 part of W. The preparing method includes the steps of 1, preparing Ni-Cr-B-Mo nanospheres by atomization; and 2, mixing the nanospheres prepared in the step 1, with the C, Si, Mn and W to obtain nanopowder. The Ni-Cr-B-Mo nanomaterial has the advantages that experiments under different ratios show that a coating of the Ni-Cr-B-Mo nanomaterial is up to HRC54 in hardness and high in hardness and wear resistance; the coating is high in toughness and binding degree; the Ni-Cr-B-Mo nanomaterial is greatly better than the traditional alloy materials, and the use of the Ni-Cr-B-Mo nanomaterial solves the problem that the traditional materials are poor in wear resistance and low in corrosion resistance.
Description
Technical field
The present invention relates to technical field of hot, is a kind of Ni-Cr-B-Mo nano material and preparation method thereof specifically.
Background technology
Thermospray is a kind of surface strengthening technology, specifically refers to a series of process, in these processes, trickle and dispersion metal or nonmetallic nano material, with one fusing or semi-molten state, deposit to a kind of matrix surface through preparation, form certain spray deposited layer.
Hot-spraying techniques has the following 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.
The development and application of hot-spraying techniques mainly relies on the development of thermal spraying material and hot-spraying techniques equipment.At present, in thermal spraying material, ubiquity the problems such as material bond strength is poor, void content is high, wear no resistance, and can not meet the requirement of people to engineering mechanical device performance.
Summary of the invention
In order to solve the problems such as conventional coatings hardness is lower, the invention provides a kind of Ni-Cr-B-Mo nano material and preparation method thereof.
Technical problem to be solved by this invention realizes by the following technical solutions:
Ni-Cr-B-Mo nano material, the mass fraction of its component and each component is that Ni accounts for 61-69 part, Cr accounts for 18-31 part, B accounts for 8 parts, Mo accounts for 5 parts, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
Ni is mixed in nano coating and can improves coating machine intensity.Ni alloy is used for manufacturing machine and bears larger pressure, withstands shocks and the part of reciprocal loaded portion, as turbine blade, bent axle, connecting rod etc.
Cr is silvery white metal, and matter is extremely hard, corrosion-resistant, and oxidation slowly, can improve hardness and the rotproofness of workpiece.
B and Si reacts and generates silicon boride more than 2000 DEG C; 1000 ~ 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.
The preparation method of Ni-Cr-B-Mo nano material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain the nanometer ball of Ni-Cr-B-Mo;
(2) nanometer ball obtained in step (1) employing promoting agent protection method is mixed 0.15 part of C, 0.5 part of Si, 0.5 part of Mn, 0.85 part of W obtain nanometer powder.
The invention has the beneficial effects as follows: through different ratio experiment, the coating hardness that the present invention makes can reach HRC54, has high hardness and wear resistance.Coating toughness, conjugation are high, larger progress is had compared with conventional alloys material, solve the problem that traditional material wear resistance is poor, erosion resistance is lower, improve the microtexture of material surface coating, structure, make coating hardness improve about 50%, toughness improves about 65%, and Young's modulus improves 6.5%-13.5%, thus entirety improves wear resisting property, the toughness of material surface, also there is significant effect to the comprehensive mechanical property improving improvement simultaneously.
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
Ni-Cr-B-Mo nano material, the mass fraction of its component and each component is that Ni accounts for 61 parts, Cr accounts for 18 parts, B accounts for 8 parts, Mo accounts for 5 parts, Cr accounts for 1 part, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
The preparation method of Ni-Cr-B-Mo nano material, comprises the following steps:
(1) aerosolization legal system is adopted to obtain the nanometer ball of Ni-Cr-B-Mo;
(2) nanometer ball obtained in step (1) employing promoting agent protection method is mixed 0.15 part of C, 0.5 part of Si, 0.5 part of Mn, 0.85 part of W obtain nanometer powder.
Embodiment two
Ni-Cr-B-Mo nano material, the mass fraction of its component and each component is that Ni accounts for 66 parts, Cr accounts for 28 parts, B accounts for 8 parts, Mo accounts for 5 parts, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
The preparation method of Ni-Cr-B-Mo nano material, with embodiment one.
Embodiment three
Ni-Cr-B-Mo nano material, the mass fraction of its component and each component is that Ni accounts for 69 parts, Cr accounts for 23 parts, B accounts for 8 parts, Mo accounts for 5 parts, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
A preparation method for Ni-Cr-B-Mo nano material, with embodiment one.
Embodiment four
Ni-Cr-B-Mo nano material, the mass fraction of its component and each component is that Ni accounts for 62 parts, Cr accounts for 18 parts, B accounts for 8 parts, Mo accounts for 5 parts, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
The preparation method of Ni-Cr-B-Mo nano material, with embodiment one.
Adopt plasma spraying technology obtained Ni-Cr-B-Mo nano coating on the rod class workpiece being matrix with 20Co steel, 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:
The performance comparison experimental result of table 1 Ni-Cr-B-Mo nano coating and 20Co steel matrix:
| Experimental group is numbered | Porosity (AREA%) | Bonding strength (MPa) | Microhardness (HV) |
| 1 | 0.644 | 75.8 | 1286 |
| 2 | 0.569 | 76.7 | 1375 |
| 3 | 0.627 | 74.2 | 1265 |
| 4 | 0.535 | 75.3 | 1385 |
| Mean value | 0.594 | 75.5 | 1327.8 |
| Comparative group | 1.205 | 22.6 | 337 |
Adopt plasma spraying technology obtained Ni-Cr-B-Mo coating on the rod class workpiece being matrix with 20Co steel, the abrasion loss contrast and experiment of the matrix with described coating and the matrix without described coating is in table 2:
The abrasion loss contrast and experiment of table 2 Ni-Cr-B-Mo nano coating and 20Co steel matrix:
From table 1 and table 2, the properties of coating that Ni-Cr-B-Mo nano material is made is excellent, and 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.Ni-Cr-B-Mo nano material, is characterized in that: the mass fraction of its component and each component is that Ni accounts for 61-69 part, Cr accounts for 18-31 part, B accounts for 8 parts, Mo accounts for 5 parts, C accounts for 0.15 part, Si accounts for 0.5 part, Mn accounts for 0.5 part, W accounts for 0.85 part.
The preparation method of 2.Ni-Cr-B-Mo nano material, is characterized in that: comprise the following steps:
(1) aerosolization legal system is first adopted to obtain the nanometer ball of Ni-Cr-B-Mo;
(2) nanometer ball obtained in step (1) employing promoting agent protection method is mixed 0.15 part of C, 0.5 part of Si, 0.5 part of Mn, 0.85 part of W obtain nanometer powder.
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Cited By (2)
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| CN106591831A (en) * | 2016-12-29 | 2017-04-26 | 沈阳大陆激光工程技术有限公司 | Self-lubricating wear-resisting coating for laser manufacturing hot rolled strip curling front guide ruler liner plate |
| CN109020165A (en) * | 2018-08-01 | 2018-12-18 | 浙江千玉装饰科技股份有限公司 | A kind of production technology of coloured glaze |
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| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106591831A (en) * | 2016-12-29 | 2017-04-26 | 沈阳大陆激光工程技术有限公司 | Self-lubricating wear-resisting coating for laser manufacturing hot rolled strip curling front guide ruler liner plate |
| CN109020165A (en) * | 2018-08-01 | 2018-12-18 | 浙江千玉装饰科技股份有限公司 | A kind of production technology of coloured glaze |
| CN109020165B (en) * | 2018-08-01 | 2021-09-10 | 浙江千玉装饰科技股份有限公司 | Production process of colored glaze |
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