Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness
The flattening behavior of in-flight particles during plasma spraying is a highly intricate process affected by numerous factors. Therefore, in this work, in-flight particles (spherical NiCrBSi powder) were collected with the water quenching process, and the morphology and composition differences be...
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MDPI AG
2023-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/12/1966 |
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| author | Hao-Nan Xuan Nan Li Jun Zhang Tianxiang Xu Lina Zhang Jun Cheng Dobuvyy Oleksandr Sheng Lu Liang-Yu Chen |
| author_facet | Hao-Nan Xuan Nan Li Jun Zhang Tianxiang Xu Lina Zhang Jun Cheng Dobuvyy Oleksandr Sheng Lu Liang-Yu Chen |
| author_sort | Hao-Nan Xuan |
| collection | DOAJ |
| description | The flattening behavior of in-flight particles during plasma spraying is a highly intricate process affected by numerous factors. Therefore, in this work, in-flight particles (spherical NiCrBSi powder) were collected with the water quenching process, and the morphology and composition differences between the original powder particles and the melted in-flight particles were observed using scanning electron microscopy (SEM). The particle size in various states was recorded and calculated. The internal structure of the particles was analyzed to elucidate their morphology and compositions under different flow rates of primary gas (FRPG). A coating with 1.25% porosity and a hardness of 767 HV<sub>0.5</sub> was achieved at the FRPG of 80 L/min. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize the microstructures of the obtained coatings. It was found that the as-sprayed coating had a certain amount of the amorphous phase. A noteworthy correlation was also established, wherein a decreased distance from the substrate, augmented spraying passes, and reduced amorphous phase content were interrelated. Concurrently, a noticeable influence of the tamping effect exerted by the in-flight particles on the coating was observed. |
| first_indexed | 2024-03-08T20:32:43Z |
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| id | doaj.art-4eaa03162c874d34a5bc8f3254bb8b50 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-08T20:32:43Z |
| publishDate | 2023-12-01 |
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| series | Metals |
| spelling | doaj.art-4eaa03162c874d34a5bc8f3254bb8b502023-12-22T14:24:41ZengMDPI AGMetals2075-47012023-12-011312196610.3390/met13121966Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and HardnessHao-Nan Xuan0Nan Li1Jun Zhang2Tianxiang Xu3Lina Zhang4Jun Cheng5Dobuvyy Oleksandr6Sheng Lu7Liang-Yu Chen8School of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaNational Dies and Molds Quality Supervision Test Center, Kunshan 215300, ChinaSchool of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaShaanxi Key Laboratory of Biomedical Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, ChinaDepartment of Material Science and Technology of Metals, Admiral Makarov National University of Shipbuilding Institute, 54025 Nikolaev, UkraineSchool of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaThe flattening behavior of in-flight particles during plasma spraying is a highly intricate process affected by numerous factors. Therefore, in this work, in-flight particles (spherical NiCrBSi powder) were collected with the water quenching process, and the morphology and composition differences between the original powder particles and the melted in-flight particles were observed using scanning electron microscopy (SEM). The particle size in various states was recorded and calculated. The internal structure of the particles was analyzed to elucidate their morphology and compositions under different flow rates of primary gas (FRPG). A coating with 1.25% porosity and a hardness of 767 HV<sub>0.5</sub> was achieved at the FRPG of 80 L/min. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize the microstructures of the obtained coatings. It was found that the as-sprayed coating had a certain amount of the amorphous phase. A noteworthy correlation was also established, wherein a decreased distance from the substrate, augmented spraying passes, and reduced amorphous phase content were interrelated. Concurrently, a noticeable influence of the tamping effect exerted by the in-flight particles on the coating was observed.https://www.mdpi.com/2075-4701/13/12/1966plasma-sprayed NiCrBSi coatingflattening degreeamorphous structureflow rate of primary gasnumber of spraying passes |
| spellingShingle | Hao-Nan Xuan Nan Li Jun Zhang Tianxiang Xu Lina Zhang Jun Cheng Dobuvyy Oleksandr Sheng Lu Liang-Yu Chen Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness Metals plasma-sprayed NiCrBSi coating flattening degree amorphous structure flow rate of primary gas number of spraying passes |
| title | Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness |
| title_full | Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness |
| title_fullStr | Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness |
| title_full_unstemmed | Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness |
| title_short | Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness |
| title_sort | different primary gas flow rates in determining the flattening behavior of in flight particles in plasma sprayed nicrbsi coatings and the resultant microstructure and hardness |
| topic | plasma-sprayed NiCrBSi coating flattening degree amorphous structure flow rate of primary gas number of spraying passes |
| url | https://www.mdpi.com/2075-4701/13/12/1966 |
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