| Radio Frequency Induction Plasma Spraying of Molybdenum |
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| 引用本文： | 蒋显亮 MaherBoulos. Radio Frequency Induction Plasma Spraying of Molybdenum[J]. 等离子体科学和技术, 2003, 5(4): 1895-1900 |
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| 作者姓名： | 蒋显亮 MaherBoulos |
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| 作者单位： | [1]InstituteofSurfaceandCoatingsTechnology,CentralSouthUniversity,Changsha410083,China [2]PlasmaTechnologyResearchCenter,UniversityofSherbrooke,SherbrookeJ1K2R1,Canada |
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| 摘 要： | Radio frequency (RF) induction plasma was used to make free-standing deposition of molybdenum (Mo). The phenomena of particle melting, flattening, and stacking were investigated. The effect of process parameters such as plasma power, chamber pressure, and spray distance on the phenomena mentioned above was studied. Scanning electron microscopy (SEM) was used to analyze the plasma-processed powder, splats formed, and deposits obtained. Experimental results show that less Mo particles are spheroidized when compared to the number of spheroidized tungsten (W) particles at the same powder feed rate under the same plasma spray condition. Molten Mo particles can be suf[iciently flattened on substrate. The influence of the process parameters on the flattening behavior is not significant. Mo deposit is not as dense as W deposit, due to the splash and low impact of molten Mo particles. Oxidation of the Mo powder with a large particle size is not evident under the low pressure plasma spray.
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| 关 键 词： | 高频感应等离子体喷涂 钼 球化 沉积 整平 金属复层防护 涂层 |
Radio Frequency Induction Plasma Spraying of Molybdenum |
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| Jiang Xianliang,Maher BoulosInstitute of Surface and Coatings Technology,Central South University,Changsha ,ChinaPlasma Technology Research Center,University of Sherbrooke,Sherbrooke JK R,Canada. Radio Frequency Induction Plasma Spraying of Molybdenum[J]. Plasma Science & Technology, 2003, 5(4): 1895-1900 |
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| Authors: | Jiang Xianliang Maher BoulosInstitute of Surface Coatings Technology Central South University Changsha ChinaPlasma Technology Research Center University of Sherbrooke Sherbrooke JK R Canada |
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| Affiliation: | Jiang Xianliang,Maher BoulosInstitute of Surface and Coatings Technology,Central South University,Changsha 410083,ChinaPlasma Technology Research Center,University of Sherbrooke,Sherbrooke J1K 2R1,Canada |
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| Abstract: | Radio frequency (RF) induction plasma was used to make free-standing deposition of molybdenum (Mo). The phenomena of particle melting, flattening, and stacking were investigated. The effect of process parameters such as plasma power, chamber pressure, and spray distance on the phenomena mentioned above was studied. Scanning electron microscopy (SEM) was used to analyze the plasma-processed powder, splats formed, and deposits obtained. Experimental results show that less Mo particles are spheroidized when compared to the number of spheroidized tungsten (W) particles at the same powder feed rate under the same plasma spray condition. Molten Mo particles can be sufficiently flattened on substrate. The influence of the process parameters on the flattening behavior is not significant. Mo deposit is not as dense as W deposit, due to the splash and low impact of molten Mo particles. Oxidation of the Mo powder with a large particle size is not evident under the low pressure plasma spray. |
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| Keywords: | induction plasma molybdenum spheroidi/ation flattening deposition density |
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