CN102286726A - Surface wear-resistance coating applied to automobile ordinary carbon steel movement friction pair - Google Patents
Surface wear-resistance coating applied to automobile ordinary carbon steel movement friction pair Download PDFInfo
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- CN102286726A CN102286726A CN2011102052577A CN201110205257A CN102286726A CN 102286726 A CN102286726 A CN 102286726A CN 2011102052577 A CN2011102052577 A CN 2011102052577A CN 201110205257 A CN201110205257 A CN 201110205257A CN 102286726 A CN102286726 A CN 102286726A
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Abstract
The invention discloses a surface wear-resistance coating applied to an automobile ordinary carbon steel movement friction pair, which sequentially consists of an ordinary carbon steel movement friction pair substrate, a buffer layer, a transition layer and a surface layer, wherein the buffer layer is a metal layer, the transition layer is a metal carbide layer, the surface layer is an adamantine carbon layer, the combining intensity between the surface coating and the ordinary carbon steel surface is improved, the excellent wear resistance and friction reduction performance are also realized, and the surface wear-resistance coating is applied to the surface treatment of automobile parts.
Description
Technical field
The present invention relates to a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to.
Technical background
As everyone knows, steel according to chemical composition can be divided into plain carbon stool, low alloy steel and non-steel alloy three classes.And plain carbon stool is a main raw of making friction of motion pairs such as automobile crane, connecting rod.During engine operation, certainly leading to friction between these friction of motion pairs, not only can increase the watt consumption of engine interior, is part time job surface rapid wearing, and, cause engine to turn round because friction produces a large amount of heat working-surface scaling loss then.In order to improve this situation, domestic automobile applies TiCN, nitrogen TiAlN, solid lubricant coatings such as CrSiN, TiSiN at the friction of motion secondary surface of these plain carbon stools at present.But the manufacturing cost height of these coatings; Under the metal to-metal contact situation, wear no resistance; And it is not high with the bonding strength of plain carbon stool substrate.Therefore in order further to improve the quality level of domestic automobile, carried out the work that on automobile plain carbon stool friction of motion secondary surface, applies the quasi-diamond carbon-coating.The quasi-diamond carbon-coating has ultralow frictional coefficient, and wear resisting property is good, by process optimization, can make itself and plain carbon stool substrate that high bonding strength is arranged, thereby improves the work-ing life of part.
Summary of the invention
The invention provides a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to.Improve solid lubricant film and more than 50%, have the excellent abrasive energy in the bonding strength on non-steel alloy surface.
Technical scheme of the present invention is achieved in that a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to, by matrix, and buffer layer, transition layer, the top layer is formed; It is characterized in that applying successively on the matrix buffer layer, transition layer and top layer; The preparation technology of coating is as follows:
1) in acetone and ethanol, adopts the middle frequency pulsed magnetron sputtering technology to carry out ultrasonic cleaning 10-15min successively matrix, put into vacuum chamber after the cleaning;
When 2) preparing buffer layer vacuum chamber is vacuumized, feed argon gas then, base material and target are carried out the plasma cleaning; With the metal is target, deposits a metal buffer layer at substrate surface; Feed argon flow amount 50-300sccm, the metallic target electric current is 8-20A, and dutycycle is 40-80%, and frequency is 20-160Hz, pulsed bias 50-1600V, and dutycycle 50-85%, frequency is 60-100, depositing time 10-30 min, deposition pressure 0.1-1Pa;
Feeding argon gas and methane when 3) preparing transition layer in vacuum chamber, is target with the metal, and methane is precursor, at metallic surface deposition monocarbide transition layer; Its CH
4Flow is 20-200sccm, depositing time 10-20min;
4) preparation is a target with graphite during the top layer, deposition one quasi-diamond carbon-coating on carbide lamella, and its graphite target electric current is 10-20A, depositing time 10-30min; Described buffer layer is that thickness is 0.5-3 μ m by a kind of in the metals such as chromium, molybdenum, titanium, tungsten or the combination more than 2 kinds; Described transition layer is the carbide combination of a kind of or metal more than 2 kinds in the metals such as chromium, molybdenum, titanium, tungsten, and thickness is 0.6-3 μ m; Described top layer is hydrogeneous quasi-diamond carbon-coating, and thickness is 1-4 μ m.
Positively effect of the present invention is: improve the bonding strength of solid lubricant coating on the plain carbon stool surface, have good anti-attrition performance.
Description of drawings
Fig. 1 is a gradient cladding synoptic diagram of the present invention.
Fig. 2 is the contrast of different surfaces coating's adhesion size.
Embodiment
Below by embodiment the present invention is specifically described, but be not equal to restriction the present invention, the change of carrying out according to the present invention for those skilled in the art, all should be included within protection scope of the present invention, a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to, by matrix 1, buffer layer 2, transition layer 3, top layer 4 is formed; It is characterized in that applying successively on the matrix 1 buffer layer 2, transition layer 3 and top layer 4;
Pre-treatment: get the V-type engine connecting rod bearing shell, connecting rod bearing shell adopts the medium carbon steel manufacturing, cleans each 10min with acetone and ethanol in ultrasonic wave successively, and seasoning places vacuum chamber; Be evacuated to vacuum tightness less than 3.0 * 10
-3Pa; Feed argon gas 600sccm in vacuum chamber, adjust air pressure to 0.7Pa, it is 1200V that workpiece adds pulsed bias, and plasma cleaning workpiece 10min is with impurity and the pollutent of removing remained on surface.
The preparation of buffer layer: argon flow amount is 150sccm, chromium metal target (purity is 99.9%) supply current 12A, and dutycycle is 50%, frequency is 40Hz, pulsed bias 900V, dutycycle 60%, frequency are 80Hz, depositing time 15 min.
The preparation of transition layer: keep above-mentioned condition constant, methane flow is increased to 150sccm gradually from 50sccm, depositing time 15min.
The preparation on top layer: other conditions remain unchanged, and the graphite target supply current is 10A, and dutycycle is 60%, and frequency is 40Hz, the about 25min of depositing time; Obtain the quasi-diamond gradient film on the connecting rod bearing shell surface at last.
The thickness measuring of coating: adopt scanning electron microscopy, measure on coating cross section enlarged image, obtaining total coating thickness is 5 μ m.
Coating's adhesion test: the connecting rod bearing shell of pressing the above-mentioned processing of process with through applying the connecting rod bearing shell of antifriction alloy layer (high tin-aluminum alloy layer, pot metal, Babbitt metal), is carried out the big or small test experiments of sticking power simultaneously.The sticking power size that found that the connecting rod bearing shell of the above-mentioned processing of process has all improved more than 50% than the connecting rod bearing shell that applies the antifriction alloy layer, as shown in Figure 2.
The frictional coefficient test of coating: tested the tribological property of workpiece under the metal to-metal contact situation with the UMT-2MT frictional testing machines of U.S. CE TR company, humidity is 20% when load 5 N, amplitude 2.5 mm, frequency 15Hz, mensuration, coefficient is 0.033 under its metal to-metal contact situation, demonstrates fully the tribological property of diamond-like coating excellence under harsh lubricating condition.
1) in acetone and ethanol, adopts the middle frequency pulsed magnetron sputtering technology to carry out ultrasonic cleaning 15min successively matrix, put into vacuum chamber after the cleaning;
When 2) preparing buffer layer vacuum chamber is vacuumized, feed argon gas then, base material and target are carried out the plasma cleaning; With the metal molybdenum is target, deposits a metal molybdenum buffer layer at substrate surface; Thickness is 0.5 μ m; Feed argon flow amount 50sccm, the metallic target electric current is 8A, and dutycycle is 40-80%, and frequency is 20Hz, pulsed bias 50V, and dutycycle 50%, frequency are 60-100Hz, depositing time 10 min, deposition pressure 0.1Pa;
Feeding argon gas and methane when 3) preparing transition layer in vacuum chamber, is target with the metal molybdenum, and methane is precursor, at metal molybdenum surface deposition monocarbide transition layer; Thickness is 0.6 its CH of μ m
4Flow is 20sccm, depositing time 10min;
4) preparation is a target with graphite during the top layer, deposition one quasi-diamond carbon-coating on carbide lamella, and thickness is 1 μ m, its graphite target electric current is 10A, depositing time 10min.
1) in acetone and ethanol, adopts the middle frequency pulsed magnetron sputtering technology to carry out ultrasonic cleaning 12min successively matrix, put into vacuum chamber after the cleaning;
When 2) preparing buffer layer vacuum chamber is vacuumized, feed argon gas then, base material and target are carried out the plasma cleaning; With the metal titanium is target, deposits a metal titanium buffer layer at substrate surface; Thickness is that 3 μ m feed argon flow amount 300sccm, and the metallic target electric current is 20A, and dutycycle is 80%, and frequency is 160Hz, pulsed bias 1600V, and dutycycle 85%, frequency are 100Hz, depositing time 30 min, deposition pressure 1Pa;
Feeding argon gas and methane when 3) preparing transition layer in vacuum chamber, is target with the metal titanium, and methane is precursor, at metal titanium surface deposition monocarbide transition layer; Thickness is 3 its CH of μ m
4Flow is 200sccm, depositing time 20min;
4) preparation is a target with graphite during the top layer, deposition one quasi-diamond carbon-coating on carbide lamella, and thickness is 4 μ m, its graphite target electric current is 20A, depositing time 30min.
Embodiment 4
1) in acetone and ethanol, adopts the middle frequency pulsed magnetron sputtering technology to carry out ultrasonic cleaning 14min successively matrix, put into vacuum chamber after the cleaning;
When 2) preparing buffer layer vacuum chamber is vacuumized, feed argon gas then, base material and target are carried out the plasma cleaning; With metal titanium, tungsten is target, deposits a metal titanium, tungsten buffer layer at substrate surface; Thickness is that 2.5 μ m feed argon flow amount 200sccm, and the metallic target electric current is 16A, and dutycycle is 60%, and frequency is 100Hz, pulsed bias 1000V, and dutycycle 65%, frequency are 80 Hz, depositing time 20 min, deposition pressure 0.6Pa;
Feeding argon gas and methane when 3) preparing transition layer in vacuum chamber, is target with metal titanium, tungsten, and methane is precursor, at metal titanium, tungsten surface deposition monocarbide transition layer; Thickness is 1.6 its CH of μ m
4Flow is 160sccm, depositing time 15min;
4) preparation is a target with graphite during the top layer, deposition one quasi-diamond carbon-coating on carbide lamella, and thickness is 3 μ m, its graphite target electric current is 15A, depositing time 20min.
Claims (4)
1. one kind is applied to automobile plain carbon stool friction of motion secondary surface wear-resistant coating, by matrix, and buffer layer, transition layer, the top layer is formed; It is characterized in that applying successively on the matrix buffer layer, transition layer and top layer; The preparation technology of coating is as follows:
1) in acetone and ethanol, adopts the middle frequency pulsed magnetron sputtering technology to carry out ultrasonic cleaning 10-15min successively matrix, put into vacuum chamber after the cleaning;
When 2) preparing buffer layer vacuum chamber is vacuumized, feed argon gas then, base material and target are carried out the plasma cleaning; With the metal is target, deposits a metal buffer layer at substrate surface; Feed argon flow amount 50-300sccm, the metallic target electric current is 8-20A, and dutycycle is 40-80%, and frequency is 20-160Hz, pulsed bias 50-1600V, and dutycycle 50-85%, frequency is 60-100, depositing time 10-30 min, deposition pressure 0.1-1Pa;
Feeding argon gas and methane when 3) preparing transition layer in vacuum chamber, is target with the metal, and methane is precursor, at metallic surface deposition monocarbide transition layer; Its CH
4Flow is 20-200sccm, depositing time 10-20min;
4) preparation is a target with graphite during the top layer, deposition one quasi-diamond carbon-coating on carbide lamella, and its graphite target electric current is 10-20A, depositing time 10-30min.
2. a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to according to claim 1 is characterized in that buffer layer is that thickness is 0.5-3 μ m by a kind of in the metals such as chromium, molybdenum, titanium, tungsten or the combination more than 2 kinds.
3. a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to according to claim 1 is characterized in that transition layer is the carbide combination of a kind of or metal more than 2 kinds in the metals such as chromium, molybdenum, titanium, tungsten, and thickness is 0.6-3 μ m.
4. a kind of automobile plain carbon stool friction of motion secondary surface wear-resistant coating that is applied to according to claim 1 is characterized in that the top layer is hydrogeneous quasi-diamond carbon-coating, and thickness is 1-4 μ m.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105431563A (en) * | 2013-07-19 | 2016-03-23 | 欧瑞康表面处理解决方案股份公司特鲁巴赫 | Coatings for forming tools |
| CN108050131A (en) * | 2017-12-25 | 2018-05-18 | 宣城铁凝机械有限公司 | A kind of cylinder piston rod and its manufacturing method |
| CN110158039A (en) * | 2019-06-05 | 2019-08-23 | 上海离原环境科技有限公司 | Diamond-like composite coating, manufacturing method thereof and nuclear power part with diamond-like composite coating combined on surface |
| CN110616401A (en) * | 2019-09-26 | 2019-12-27 | 济宁学院 | Preparation method of wear-resistant hydraulic pump part |
| US20220055404A1 (en) * | 2020-08-19 | 2022-02-24 | Tribology Innovations, Llc | Torsion axle assembly |
| CN114905058A (en) * | 2022-05-20 | 2022-08-16 | 沈阳金锋特种刀具有限公司 | Graphene composite coating cutter and preparation method thereof |
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| CN101597745A (en) * | 2008-06-02 | 2009-12-09 | 中国航天科技集团公司第五研究院第五一○研究所 | Deposition method of TiC/DLC multilayer film |
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| US5643423A (en) * | 1990-09-27 | 1997-07-01 | Monsanto Company | Method for producing an abrasion resistant coated substrate product |
| CN101062602A (en) * | 2006-04-27 | 2007-10-31 | 株式会社神户制钢所 | Amorphous-carbon-based hard multilayer film and hard surface member having the film on surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105431563A (en) * | 2013-07-19 | 2016-03-23 | 欧瑞康表面处理解决方案股份公司特鲁巴赫 | Coatings for forming tools |
| CN108050131A (en) * | 2017-12-25 | 2018-05-18 | 宣城铁凝机械有限公司 | A kind of cylinder piston rod and its manufacturing method |
| CN110158039A (en) * | 2019-06-05 | 2019-08-23 | 上海离原环境科技有限公司 | Diamond-like composite coating, manufacturing method thereof and nuclear power part with diamond-like composite coating combined on surface |
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| US20220055404A1 (en) * | 2020-08-19 | 2022-02-24 | Tribology Innovations, Llc | Torsion axle assembly |
| US12077015B2 (en) * | 2020-08-19 | 2024-09-03 | Tribology Innovations, Llc | Torsion axle assembly |
| CN114905058A (en) * | 2022-05-20 | 2022-08-16 | 沈阳金锋特种刀具有限公司 | Graphene composite coating cutter and preparation method thereof |
| CN114905058B (en) * | 2022-05-20 | 2024-04-26 | 沈阳金锋特种刀具有限公司 | Graphene composite coating cutter and preparation method thereof |
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Application publication date: 20111221 |