WO2016070658A1 - Co3W3C鱼骨状硬质相增强Fe基耐磨涂层及制备 - Google Patents
Co3W3C鱼骨状硬质相增强Fe基耐磨涂层及制备 Download PDFInfo
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- WO2016070658A1 WO2016070658A1 PCT/CN2015/086199 CN2015086199W WO2016070658A1 WO 2016070658 A1 WO2016070658 A1 WO 2016070658A1 CN 2015086199 W CN2015086199 W CN 2015086199W WO 2016070658 A1 WO2016070658 A1 WO 2016070658A1
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- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- B23K10/00—Welding or cutting by means of a plasma
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- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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Definitions
- the invention relates to a wear-resistant coating on a surface of a material and a preparation thereof, in particular to a Co 3 W 3 C fishbone hard phase reinforced Fe-based wear-resistant coating and a preparation method thereof.
- the wear and tear of mechanical parts is particularly serious. Therefore, it is required that the surface of the mechanical part in which the friction pair exists during use has high hardness and wear resistance.
- Surface engineering technology can produce wear-resistant coatings with excellent performance.
- the coating materials are mostly composite materials, and the reinforcing phase is mainly carbides, borides and nitrides with high hardness and wear resistance.
- the Co 3 W 3 C fishbone hard phase does not appear in the reinforcing phase of current wear resistant coatings and is not used in the reinforcement phase of wear resistant coatings.
- the object of the present invention is to provide a Co 3 W 3 C fishbone hard phase reinforced Fe-based wear-resistant coating which is simple in operation and is not easy to fall off.
- the technical solution for achieving the object of the present invention is: the wear-resistant coating and the preparation method: a Fe-based WC alloy powder is coated on the surface of the metal substrate by a plasma cladding process to obtain a layer of fish bone-like Co 3 W 3 C as a strengthening phase. Wear resistant high hardness coating;
- the composition of the Fe-based WC mixed alloy powder is C: 1.89-3.77%, Cr: 5.4-11.7%, Ni: 3.3-7.15%, W: 28.81-57.83%, Co: 4.2-8.4. %, Si: 0.03-0.065%, the balance is Fe;
- the polished substrate is removed by grinding to remove the oxide layer on the surface of the substrate, and the processed substrate is placed on the plasma cladding workbench and the position is adjusted;
- the WC powder with a particle size of 280-320 mesh and the Fe-based alloy powder of 100-200 mesh are screened, and the Fe-based WC mixed alloy powder of the mass percentage is prepared and stirred in a stirrer for 50-60 minutes, and then placed in a drying oven for heating. Drying at 150 ° C, the above pretreatment process can be completed into the plasma cladding machine;
- the technical parameters of the plasma cladding process are: working current 135-145A, working voltage 11-12V, argon gas for powder feeding gas and shielding gas, powder feeding pressure 280-300MPa, protection gas pressure 700-800MPa, nozzle distance base
- the surface is 10 mm and the scanning speed is 80 mm/min.
- the plasma cladding equipment is turned off, and the side and front sides of the cladding layer are cut.
- the fishbone hard phase can be seen under the optical microscope and the electron microscope, combined with X-ray diffraction.
- the analysis results were confirmed to be Co 3 W 3 C, which showed high performance in both the hardness test and the abrasion resistance test.
- the beneficial effects are that, due to the above scheme, the metallurgical bonding performance of the cladding layer and the matrix material obtained by the plasma cladding technology is excellent, the operation process is simple, and the equipment price is low.
- the Fe-based WC alloy powder is prepared by a plasma cladding process to obtain a Co 3 W 3 C fishbone hard phase reinforced Fe-based wear-resistant coating and a preparation method thereof, wherein the strengthening phase is Co 3 W 3 C fish bone carbide.
- the cladding layer with the enhanced phase of the fishbone hard phase Co 3 W 3 C has the characteristics of high hardness and high wear resistance, and the cladding layer is not easy to fall off, and has high application value and innovative significance.
- the plasma cladding process is simple, the equipment is easy to operate, and the economic benefit is high, and it can be widely used for surface strengthening of precision parts.
- the obtained cladding layer has strong bonding with the matrix, and the optimal performance matching between the ceramic phase of the cladding layer and the matrix can be achieved, and the comprehensive mechanical properties of the matrix structure are greatly improved.
- the fish bone-shaped strengthening phase Co 3 W 3 C has the characteristics of high hardness and high wear resistance, which improves the hardness of the cladding layer and reduces the wear of the matrix structure as the skeleton of the cladding layer in friction, effectively improving The use value of the matrix.
- Figure 1 is an XRD pattern of a plasma clad wear resistant coating of the present invention.
- FIG. 2 is a metallographic structure diagram of a plasma cladding layer of the present invention under an optical microscope.
- Fig. 3 is a view showing the metallographic structure of the plasma cladding layer of the present invention under an electron microscope.
- Figure 4 is a topographical view of the plasma cladding layer of the present invention at 100 microns after the abrasion test.
- Figure 5 is a topographical view of the plasma cladding layer of the present invention at 30 microns after the abrasion test.
- the wear-resistant coating and the preparation method of the invention the Fe-based WC alloy powder is coated on the surface of the metal substrate by a plasma cladding process to obtain a wear-resistant high-hardness coating with a fishbone Co 3 W 3 C as a strengthening phase. ;
- the composition of the Fe-based WC mixed alloy powder is C: 1.89-3.77%, Cr: 5.4-11.7%, Ni: 3.3-7.15%, W: 28.81-57.83%, Co: 4.2-8.4. %, Si: 0.03-0.065%, the balance is Fe;
- the polished substrate is removed by grinding to remove the oxide layer on the surface of the substrate, and the processed substrate is placed on the plasma cladding workbench and the position is adjusted;
- the WC powder with a particle size of 280-320 mesh and the Fe-based alloy powder of 100-200 mesh are screened, and the Fe-based WC mixed alloy powder of the mass percentage is prepared and stirred in a stirrer for 50-60 minutes, and then placed in a drying oven for heating. Drying at 150 ° C, the above pretreatment process can be completed into the plasma cladding machine;
- the technical parameters of the plasma cladding process are: working current 135-145A, working voltage 11-12V, argon gas for powder feeding gas and shielding gas, powder feeding pressure 280-300MPa, protection gas pressure 700-800MPa, nozzle distance base
- the surface is 10 mm and the scanning speed is 80 mm/min.
- the plasma cladding equipment is turned off, and the side and front sides of the cladding layer are cut.
- the fishbone hard phase can be seen under the optical microscope and the electron microscope, combined with X-ray diffraction.
- the analysis results were confirmed to be Co 3 W 3 C, which showed high performance in both the hardness test and the abrasion resistance test.
- Example 1 The oxide layer on the surface of the substrate was removed by sanding, the treated substrate was placed on a plasma cladding table, and the position was adjusted.
- the WC powder with the particle size of 280-320 mesh and the Fe-based alloy powder of 100-200 mesh were screened to prepare the Fe-based WC mixed alloy powder.
- the composition was based on the mass percentage: C: 3.24%, Cr: 7.2%, Ni: 4.4%. W: 49.56%, Co: 7.2%, Si: 0.04%, and the balance is Fe.
- the powder is pretreated, placed in a stirrer for 50-60 minutes, placed in a dry box and heated at 150 ° C to dry, and placed in a powder feeder.
- the cladding process is: working current 140A, working voltage 11V, argon gas is used for powder feeding gas and shielding gas, powder feeding pressure is 300MPa, protective gas pressure is 800MPa, nozzle is 10mm away from the surface of the substrate, and scanning speed is 80mm/min.
- the plasma cladding machine is turned off, and the workpiece is naturally cooled to room temperature in the air.
- the prepared Co 3 W 3 C fishbone hard phase reinforced Fe-based wear-resistant coating was subjected to a grinding test on a M-200 abrasion tester with a wear time of 40 min and a wear amount of only 0.008 g, while the Q235 steel was under the same conditions.
- the wear amount is 0.1996g, the wear resistance is obviously improved, the highest hardness value reaches 946HV, and the hardness value is also obviously improved.
- Fig. 2 it can be seen that a large number of fishbone hard phases are distributed on the substrate.
- Fig. 3 the skeleton structure of the tissue can be clearly seen, and in the friction experiment, the wear-resistant skeleton is left and right. Reduces wear of the matrix structure and improves wear resistance.
- Example 2 The pretreatment process of the substrate was maintained in the same manner as in Example 1, and the prepared Fe-based WC The alloy powder was mixed, and its composition was C: 3.77%, Cr: 5.4%, Ni: 3.3%, W: 57.83%, Co: 8.4%, Si: 0.03%, and the balance was Fe. The process parameters of the plasma cladding were kept the same as in Example 1, and a cladding layer excellent in performance was obtained.
- the prepared Co 3 W 3 C fishbone hard phase reinforced Fe-based wear-resistant coating was subjected to the grinding test on the M-200 abrasion tester.
- the wear time was 40 min, the wear amount was 0.0032 g, and the wear resistance was excellent.
- Co 3 W 3 C in the cladding layer plays a large role in improving the performance.
- Fig. 4 it can be seen that a large amount of fishbone hard phase Co 3 W 3 C embossed on the surface of the substrate on the wear surface, and the wear resistance is good.
- Example 3 Pretreatment Process of Substrate
- the Fe-based WC mixed alloy powder prepared in the same manner as in Example 1 was prepared in a mass percentage of C: 1.89%, Cr: 11.7%, Ni: 7.15%, W: 28.81%, Co: 4.2%, Si: 0.065%, and the balance is Fe.
- the process parameters of the plasma cladding were kept the same as in Example 1, and a cladding layer excellent in performance was obtained.
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Abstract
Description
Claims (2)
- 一种Co3W3C鱼骨状硬质相增强Fe基耐磨涂层,其特征是:该耐磨涂层由以下质量百分比的合金粉末元素组成:所述的合金粉末成分为:C:1.89-3.77%、Cr:5.4-11.7%、Ni:3.3-7.15%、W:28.81-57.83%、Co:4.2-8.4%、Si:0.03-0.065%,余量为Fe。
- 一种采用权利要求1所述的Co3W3C鱼骨状硬质相增强Fe基耐磨涂层的制备方法,其特征是:采用等离子熔覆工艺将Fe基WC合金粉末熔覆在金属基体表面获得一层以鱼骨状Co3W3C为强化相的耐磨高硬度涂层;具体步骤为:(1)对基体进行预处理:通过打磨去掉基体表面的氧化层,将处理好的基体放在等离子熔覆工作台,并调整好位置;(2)对合金粉末预处理:筛选颗粒度为280-320目的WC粉末与100-200目的Fe基合金粉末,制备所述质量比例的Fe基WC混合合金粉末,并放入搅拌器搅拌50-60分钟,放入干燥箱加热150℃干燥,完成以上预处理工艺即可放入等离子熔覆机;(3)等离子熔覆:等离子熔覆工艺的技术参数为:工作电流135-145A,工作电压11-12V,送粉气体和保护气体均采用氩气,送粉气压为280-300MPa,保护气压为700-800MPa,喷嘴距离基体表面10mm,扫描速度为80mm/min;(4)熔覆层处理:完成等离子熔覆工艺后,关闭等离子熔覆设备,对熔覆层的侧面与正面进行切削加工,打磨抛光后在光学显微镜和电子显微镜下即可看到鱼骨状硬质相,结合X射线衍射分析结果,可确定为Co3W3C,在硬度试验和耐磨性实验中均表现出很高的性能。
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US15/118,750 US20170044673A1 (en) | 2014-11-03 | 2015-08-06 | CO3W3C Fishbone-Like Hard Phase-Reinforced Fe-Based Wear-Resistant Coating and Preparation Thereof |
GB1609913.7A GB2540265A (en) | 2014-11-03 | 2015-08-06 | CO3W3C fishbone-like hard phase-reinforced fe-based wear-resistant coating and preparation thereof |
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CN201410610715.9 | 2014-11-03 | ||
CN201410610715.9A CN104313570B (zh) | 2014-11-03 | 2014-11-03 | Co3W3C鱼骨状硬质相增强Fe基耐磨涂层及制备 |
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CN104313570B (zh) * | 2014-11-03 | 2017-05-03 | 中国矿业大学 | Co3W3C鱼骨状硬质相增强Fe基耐磨涂层及制备 |
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EP3317456A1 (de) * | 2015-07-02 | 2018-05-09 | Voith Patent GmbH | Bauteil für eine maschine zur herstellung und/oder behandlung einer faserstoffbahn und verfahren zur herstellung einer beschichtung eines bauteils |
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CN113122841B (zh) * | 2021-04-25 | 2022-04-26 | 中国海洋大学 | 一种具有梯度组合结构的耐蚀耐磨涂层及其制备方法 |
CN113510238B (zh) * | 2021-07-14 | 2022-03-04 | 中南大学 | 一种基于激光熔覆制备高硬度高耐磨刀模的复合材料及其制备方法 |
CN115537803A (zh) * | 2022-10-09 | 2022-12-30 | 广东粤科新材料科技有限公司 | 一种316L不锈钢表面的WC-Ni耐磨涂层及其制备方法 |
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CN114985728A (zh) * | 2022-06-09 | 2022-09-02 | 海南大学 | 一种陶瓷/铁基复合涂料、碳钢基复合材料及其制备方法 |
CN114985728B (zh) * | 2022-06-09 | 2024-05-14 | 海南大学 | 一种陶瓷/铁基复合涂料、碳钢基复合材料及其制备方法 |
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CN104313570B (zh) | 2017-05-03 |
US20170044673A1 (en) | 2017-02-16 |
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