Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming
To rapidly prepare the alumina ceramic microspheres with control of particle size, a ceramic microsphere rapid forming equipment based on droplet jetting technology and slurry curing technology was designed. The Al<sub>2</sub>O<sub>3</sub> microspheres were prepared by using...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2018-11-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I11/84 |
| _version_ | 1828077154172141568 |
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| author | CAI Ji-li WU He-bao LIU Fu-chu FAN Zi-tian |
| author_facet | CAI Ji-li WU He-bao LIU Fu-chu FAN Zi-tian |
| author_sort | CAI Ji-li |
| collection | DOAJ |
| description | To rapidly prepare the alumina ceramic microspheres with control of particle size, a ceramic microsphere rapid forming equipment based on droplet jetting technology and slurry curing technology was designed. The Al<sub>2</sub>O<sub>3</sub> microspheres were prepared by using the rapid forming device with alumina powder as raw material, polyvinyl alcohol (PVA) as a binder and boric acid as a curing agent. The effect of different slurry composition parameters on the formability of green body was investigated. The effect of nozzle diameter and slurry extrusion pressure on the particle size of Al<sub>2</sub>O<sub>3</sub> microspheres was studied. The effect of sintering temperature on the properties of Al<sub>2</sub>O<sub>3</sub> microspheres was analyzed and compared. The results show that when the mass fraction of alumina powder, PVA and boric acid are respectively 70%, 3% and 10%, the green body of Al<sub>2</sub>O<sub>3</sub> microspheres have high sphericity and better formability. The controllability of the particle size distribution can be achieved by adjusting nozzle size and slurry extrusion pressure. Ceramic microspheres possess the best comprehensive property, when sintered at 1400℃, the particle size of Al<sub>2</sub>O<sub>3</sub> microspheres is uniform, the sphericity is about 1.08, the porosity is 43.7%, the relative density is 82.1%, and the crush load is up to 76.5N. |
| first_indexed | 2024-04-11T02:25:15Z |
| format | Article |
| id | doaj.art-d39287ee1954446baa70d5c2ece1304e |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:25:15Z |
| publishDate | 2018-11-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-d39287ee1954446baa70d5c2ece1304e2023-01-02T22:54:31ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-11-014611848910.11868/j.issn.1001-4381.2017.000649201811000649Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid FormingCAI Ji-li0WU He-bao1LIU Fu-chu2FAN Zi-tian3School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, ChinaSchool of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, ChinaTo rapidly prepare the alumina ceramic microspheres with control of particle size, a ceramic microsphere rapid forming equipment based on droplet jetting technology and slurry curing technology was designed. The Al<sub>2</sub>O<sub>3</sub> microspheres were prepared by using the rapid forming device with alumina powder as raw material, polyvinyl alcohol (PVA) as a binder and boric acid as a curing agent. The effect of different slurry composition parameters on the formability of green body was investigated. The effect of nozzle diameter and slurry extrusion pressure on the particle size of Al<sub>2</sub>O<sub>3</sub> microspheres was studied. The effect of sintering temperature on the properties of Al<sub>2</sub>O<sub>3</sub> microspheres was analyzed and compared. The results show that when the mass fraction of alumina powder, PVA and boric acid are respectively 70%, 3% and 10%, the green body of Al<sub>2</sub>O<sub>3</sub> microspheres have high sphericity and better formability. The controllability of the particle size distribution can be achieved by adjusting nozzle size and slurry extrusion pressure. Ceramic microspheres possess the best comprehensive property, when sintered at 1400℃, the particle size of Al<sub>2</sub>O<sub>3</sub> microspheres is uniform, the sphericity is about 1.08, the porosity is 43.7%, the relative density is 82.1%, and the crush load is up to 76.5N.http://jme.biam.ac.cn/CN/Y2018/V46/I11/84droplet jetting technologyceramic microspheresaluminasphericitysize distribution |
| spellingShingle | CAI Ji-li WU He-bao LIU Fu-chu FAN Zi-tian Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming Cailiao gongcheng droplet jetting technology ceramic microspheres alumina sphericity size distribution |
| title | Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming |
| title_full | Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming |
| title_fullStr | Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming |
| title_full_unstemmed | Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming |
| title_short | Properties of Al<sub>2</sub>O<sub>3</sub> Ceramic Microspheres Prepared by Micro-droplet Jetting Rapid Forming |
| title_sort | properties of al sub 2 sub o sub 3 sub ceramic microspheres prepared by micro droplet jetting rapid forming |
| topic | droplet jetting technology ceramic microspheres alumina sphericity size distribution |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I11/84 |
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