CN219388446U - Multifunctional sliding bearing with bionic texture gradient coating - Google Patents
Multifunctional sliding bearing with bionic texture gradient coating Download PDFInfo
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- CN219388446U CN219388446U CN202320238853.3U CN202320238853U CN219388446U CN 219388446 U CN219388446 U CN 219388446U CN 202320238853 U CN202320238853 U CN 202320238853U CN 219388446 U CN219388446 U CN 219388446U
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Abstract
The utility model discloses a bionic texture gradient coating multifunctional sliding bearing, which comprises a bearing bush substrate made of Babbitt metal or aluminum-magnesium alloy, wherein the surface of the bearing bush substrate is provided with a scale-like fan-shaped micro-texture and alternately distributed laminated coatings; the alternating stack coating comprises a first layer of ZrO 2 The second layer is an SbNaB layer and the third layer is an AlTeVN layer. The bearing can realize multifunctional function, and can maximally reduce the rotation of the bearing under the condition of fluid lubricationThe bearing capacity can be improved to the maximum extent under the action of small friction during reverse rotation; zrO (ZrO) 2 The coating has self-lubricating effect, and SbNaB, alTeVN, zrO at high temperature 2 Can generate in-situ reaction to generate Sb with lubricating effect 2 O 3 、V 2 O 5 The lubricant realizes high-temperature lubrication of the bearing, effectively reduces the abrasion of the bearing and prolongs the service life of the bearing.
Description
Technical Field
The utility model belongs to the technical field of bearing design and manufacture, and particularly relates to a multifunctional sliding bearing with a bionic texture gradient coating.
Background
When the sliding bearing works, the journal and the bearing bush can generate friction, so that the surface is heated and even worn to be bitten, and the bearing bush with good performances such as friction, bearing capacity and the like is designed when the bearing is designed. In general, the bearing can rotate bidirectionally in the use process, but the use requirements met by the bearing during bidirectional rotation under complex working conditions may not be the same, so it is important to design a multifunctional bearing to meet different use requirements under complex working conditions.
Through search, the Chinese patent application number is found: 201910511263.1' reports an antifriction antiwear self-lubricating coating bearing and a preparation method thereof, wherein the bearing is prepared with a hard alloy layer, a silicon nitride ceramic layer and a cubic boron nitride layer composite lubricating coating on the surface of a substrate by a plasma spraying method, so that the lubricating effect in the working process is realized; however, the bearing cannot improve the oil film carrying capacity during liquid lubrication and cannot realize different functions during forward rotation and reverse rotation. Chinese patent application number: 202010428627.2' reports a surface texture having friction reduction and improved oil film bearing capacity, the bearing surface having a zither-shaped surface texture, the lubricating fluid being hydrodynamic lubrication via the texture, the oil film bearing capacity being improved and friction being reduced; however, the bearing is not suitable for oil-free lubrication conditions and does not have a self-lubricating function at high temperature. Chinese patent application number: 202011477509.7A high temperature self-lubricating bearing and its preparation method are reported, wherein AlZnMoN+ZrAgVB alternately distributed nano laminated coating is deposited on the surface of the bearing substrate, and AlZnMoN, zrAgVB and O in air are generated at high temperature 2 The high-temperature lubricant is generated by reaction, so that the lubrication effect is achieved, but the bearing cannot improve the oil film bearing capacity during liquid lubrication, and different functions of forward rotation and reverse rotation cannot be realized. Therefore, how to realize different functions of the bearing during bidirectional rotation under complex working conditions and improve the friction and wear resistance of the bearing is a problem to be solved.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the utility model provides a bionic texture gradient coating multifunctional sliding bearing. The bearing can realize different functions of forward rotation and reverse rotation, can maximally reduce friction coefficient during forward rotation, and can maximally improve oil film bearing capacity during reverse rotation. Meanwhile, the bearing surface gradient coating has good lubrication and corrosion resistance effects, and can realize self lubrication in the working process, so that bearing wear is reduced, and bearing life is prolonged.
The technical scheme is as follows:
the utility model relates to a bionic texture gradient coating multifunctional sliding bearing, which comprises a bearing bush substrate made of Babbitt metal or aluminum-magnesium alloy, wherein the surface of the bearing bush substrate is provided with a scale-like fan-shaped micro texture and gradient coatings which are alternately distributed; the gradient coating comprises a first layer of ZrO 2 The second layer is an SbNaB layer and the third layer is an AlTeVN layer.
Further, the arrangement direction of the scale-like fan-shaped micro-textures is consistent, and the included angle theta of the fan-shaped textures of the scale-like fan-shaped micro-textures 1 The texture depth of the fish scale-like fan-shaped micro-texture is gradually reduced from the center of the fan-shaped circle to the edge, and the included angle theta of the gradient depth is formed 2 The radius r of the fan-shaped texture of the imitation fish-scale fan-shaped micro-texture is 30-160 mu m, the width d of the fan-shaped texture of the imitation fish-scale fan-shaped micro-texture is 15-65 mu m, and the interval l of the transverse array of the imitation fish-scale fan-shaped micro-texture is equal to 32-72 DEG x 80-320 μm, its texture longitudinal array spacing l y 90-360 μm; the foregoing ZrO 2 The thickness of the single layer is 10-50nm, the thickness of the SbNaB single layer is 100-200nm, and the thickness of the AlTeVN single layer is 100-200nm; the gradient coating contains 2-5 layers of ZrO 2 Layers, 2-5 SbNaB layers and 2-5 AlTeVN layers.
The beneficial effects of the utility model include:
1. the surface texture of the sliding bearing bush designed by the utility model can realize different functions of forward rotation and reverse rotation of the bearing; 2. under the condition of liquid lubrication, when the relative motion direction of the bearing is forward rotation from the circle center to the edge of the simulated fish scale fan-shaped texture, the friction coefficient can be reduced to the maximum extent, and when the relative motion direction is fromWhen the edge of the scale-like fan-shaped texture is reversed towards the circle center, the maximum increase of the oil film bearing capacity can be realized; 3. the coating has self-lubricating effect, and ZrO at low temperature 2 The layer has self-lubricating effect, and SbNaB, alTeVN, zrO at higher temperature 2 Can generate in-situ reaction to generate Sb with lubricating effect 2 O 3 、V 2 O 5 The lubricant realizes high-temperature lubrication of the bearing, effectively reduces the abrasion of the bearing and prolongs the service life of the bearing; 4. as Na element is added in the SbNaB layer, the coating has good corrosion resistance; the AlTeVN layer has good heat conduction property due to the addition of Te element, so that friction heat can be reduced; 5. the bearing can be suitable for occasions with different use requirements of forward rotation and reverse rotation under complex working conditions.
Drawings
FIG. 1 is a schematic diagram of a bionic texture gradient coating multifunctional sliding bearing structure of the utility model.
FIG. 2 is a schematic representation of a single scale-like fan-like microtexture of the present utility model.
Fig. 3 is a schematic diagram of a scale-like fan-shaped micro-texture array distribution according to the present utility model.
The diagram is: 0 is a bearing bush matrix material, 1 is a micro texture, 2 is a gradient coating, and 21 is ZrO 2 The layer 22 is SbNaB layer, 23 is AlTeVN layer, 3 is fan-shaped texture included angle theta 1 4 is the texture gradient depth included angle theta 2 5 is the radius r of the sector texture, 6 is the width d of the sector texture, and 7 is the interval of the transverse array of the texture is l x 8 is the texture longitudinal array interval is l y 。
Detailed Description
The technical scheme of the utility model is illustrated below with reference to fig. 1-3.
The utility model relates to a bionic texture gradient coating multifunctional sliding bearing, which comprises a bearing bush substrate made of Babbitt metal or aluminum-magnesium alloy, wherein the surface of the bearing bush substrate is provided with a fish scale-like fan-shaped micro texture (1) and gradient coatings (2) which are alternately distributed; the first layer of the gradient coating is ZrO 2 The layer (21), the second layer is SbNaB layer (22), and the third layer is AlTeVN layer (23). Fish scale-like fanThe arrangement direction of the shape micro-textures is consistent, and the included angle theta of the fan-shaped textures 1 (3) The texture depth gradually decreases from the circle center of the fan shape to the edge at an angle theta of 22 DEG 2 (4) A radius r (5) of the fan-shaped texture of 36 DEG is 40 mu m, a width d (6) of the fan-shaped texture is 15 mu m, and a texture transverse array interval l imitating the fan-shaped micro texture of the fish scales is provided x (7) 120 μm, its texture longitudinal array spacing l y (8) 120 μm; zrO (ZrO) 2 The thickness of the layer (21) is 10nm, the thickness of the SbNaB layer (22) is 100nm, and the thickness of the AlTeVN layer (23) is 100nm; gradient coating (2) contains 5 layers of ZrO 2 Layer (21), 5 SbNaB layer (22) and 5 AlTeVN layer (23).
Through the design of the fish scale fan-shaped micro-texture imitation structure on the surface of the bearing bush substrate, different functions of forward rotation and reverse rotation of the bearing can be realized; under the condition of liquid lubrication, when the relative motion direction of the bearing is forward rotation from the circle center to the edge of the simulated fish scale fan-shaped texture, the friction coefficient can be reduced to the maximum extent, and when the relative motion direction is reverse rotation from the edge to the circle center of the simulated fish scale fan-shaped texture, the oil film bearing capacity can be improved to the maximum extent; the designed bearing surface coating has self-lubricating effect, and ZrO (ZrO) at low temperature 2 The layer has self-lubricating effect, and SbNaB, alTeVN, zrO at higher temperature 2 Can generate in-situ reaction to generate Sb with lubricating effect 2 O 3 、V 2 O 5 The lubricant realizes high-temperature lubrication of the bearing, effectively reduces the abrasion of the bearing and prolongs the service life of the bearing; the SbNaB layer has good corrosion resistance due to the addition of Na element; the AlTeVN layer has good heat conduction property due to the addition of Te element, so that friction heat can be reduced; the bearing can be suitable for occasions with different use requirements of forward rotation and reverse rotation under complex working conditions.
Claims (2)
1. The utility model provides a multi-functional slide bearing of bionical texture gradient coating, includes the axle bush base member (0) of being made by babbitt metal or almag, its characterized in that: the surface of the bearing bush substrate (0) is provided with a fish scale-like fan-shaped micro-texture (1) and gradient coatings (2) which are alternately distributed; the gradient coating comprises a first layer of ZrO 2 A layer (21), a second layer is a SbNaB layer (22) and a third layerIs AlTeVN layer (23).
2. The bionic texture gradient coating multifunctional sliding bearing according to claim 1, wherein the arrangement direction of the scale-like fan-shaped micro textures is consistent, and the included angle theta of the fan-shaped textures of the scale-like fan-shaped micro textures is formed 1 (3) The texture depth of the scale-like fan-shaped micro-texture is gradually decreased from the circle center of the fan to the edge and gradually changed into a depth included angle theta from 18 degrees to 90 degrees 2 (4) The radius r (5) of the fan-shaped texture of the fish scale-like fan-shaped micro-texture is 30-160 mu m, and the width d (6) of the fan-shaped texture of the fish scale-like fan-shaped micro-texture is 15-65 mu m; the texture transverse array spacing l of the fish scale-like fan-shaped micro-texture x (7) 80-320 μm, its texture longitudinal array spacing l y (8) 90-360 μm; the ZrO 2 The thickness of the single layer of the layer (21) is 10-50nm, the thickness of the single layer of the SbNaB layer (22) is 100-200nm, and the thickness of the single layer of the AlTeVN layer (23) is 100-200nm; the gradient coating (2) contains 2-5 layers of ZrO 2 Layers (21), 2-5 SbNaB layers (22) and 2-5 AlTeVN layers (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320238853.3U CN219388446U (en) | 2023-02-17 | 2023-02-17 | Multifunctional sliding bearing with bionic texture gradient coating |
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| CN202320238853.3U CN219388446U (en) | 2023-02-17 | 2023-02-17 | Multifunctional sliding bearing with bionic texture gradient coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117774290A (en) * | 2024-02-27 | 2024-03-29 | 中国人民解放军海军工程大学 | Water lubrication bearing bush with bionic sardine scale microstructure and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117774290A (en) * | 2024-02-27 | 2024-03-29 | 中国人民解放军海军工程大学 | Water lubrication bearing bush with bionic sardine scale microstructure and preparation method thereof |
| CN117774290B (en) * | 2024-02-27 | 2024-05-17 | 中国人民解放军海军工程大学 | Water lubrication bearing bush with bionic sardine scale microstructure and preparation method thereof |
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