| NiWC喷焊层冲蚀磨损性能的研究 |
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| 引用本文： | 孙大千,高南,曹书云.NiWC喷焊层冲蚀磨损性能的研究[J].华中科技大学学报(自然科学版),1992(6). |
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| 作者姓名： | 孙大千 高南 曹书云 |
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| 作者单位： | 华中理工大学机械工程二系
(孙大千，高南)，华中理工大学机械工程二系(曹书云) |
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| 摘 要： | 本文通过对NiWC喷焊层的冲蚀实验以及扫描电镜分析,研究NiWC喷焊层的冲蚀性能.结果表明在Al_2O_3硬粒子冲蚀条件下,NiWC喷焊层显示介于延性、脆性材料之间的冲蚀特性.NiWC喷焊层的冲蚀率随WC%增加而增加.
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| 关 键 词： | 镍基合金 喷焊层 冲蚀 磨损 |
A Study on the Erosive Wear Characteristics of NiWC Spray Welding Coating |
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| Sun Daqian Gao Nan Coo Shuyun.A Study on the Erosive Wear Characteristics of NiWC Spray Welding Coating[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1992(6). |
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| Authors: | Sun Daqian Gao Nan Coo Shuyun |
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| Institution: | Sun Daqian Gao Nan Coo Shuyun |
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| Abstract: | Nickel-based self-fluxing alloy welding coating containing hard tungsten carbide particles (or NiWC for short) is widely used for parts subjected to abrasive wear. Some research results are reported as follows: 1. The wear resistance and hardness of coating increase with an increase in the tungsten carbide content, and wear resistance is best at 3% (by weight) of tungsten carbide. 2. With an increase in the tungsten carbide content, the wear mechanism changes from predominantly grain micro-cutting to brittle fracture and peeling of tungsten carbide and other hard phases. 3. There is the following relation between the rate of erosive wear e and particle velocity v. e = kvn, where k and n are constants. 4. The rate of erosive wear increases with an increase of the impingement angle up to 60? beyong which the rate begins to decrease. |
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| Keywords: | nickel-based alloys NiWC spray welding coating erosion wear |
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