1997 Fiscal Year Final Research Report Summary
Structure and Magnetic Properties of Ferromagnetic Metastable Phase Obtained by Contanieless Processing.
| Project/Area Number |
08650877
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
NAGAYAMA Katsuhisa Shibaura Institute of Technology, Faculty of Engineering, Associate Professor., 工学部, 助教授 (80189167)
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| Project Period (FY) |
1996 – 1997
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| Keywords | Contanieless Processing / Electromagnetic Levitation Furnace / Homogeneous Nucleation / Undercooling / Ferromagenetic Metastable Phase / High Coercivity / Parabolic Flight / Microgravity |
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| Research Abstract |
The containerless processing is preceived as the new process that the able to process the sample under noncontact, without requiring the difference, container from usual melting process. I think the thing that leaves expectation that the above process is able to samples it extremly easily, under the gravit, in other words, microgravity environment which become unweight environment, although I require enormous energy, to cancel the weight of the substance, in the case that I carry out an above new process on the ground especially. Therfore, as for this process the expectation is had to the presentation of the new reseach subject that the apparatus development becomes original case, of couse, as module for the international universe station alpha installation that the operation start is planned in 2003 A.D.However, the present condition is becoming the untrodden reserch range with the interior and exterior and only the exterior and only the experent enforcemeht example for high purity ma
… More
terials generation does not pass to be reported. Futhermore, the establishment of the base technology including such apparatus development that materials this process is having a big problem even in the stable levitation hold of the levitation sample of course. The application person did electromagnetic force the microgravity experiment that used the parabolic flight of the airplane by using various metals and alloys sample as the hold medium of the levitation sample, into this application research enforcement period. Mastering success in the stable hold of realization and, molten sample of levitation that used a low fusion point sample and suceed in the complete stable nonexistaent big result as all with the interior and exterior. Also, I mastered success to the precise temperature measuring of the undercooling coagulation process of that the application person used the semiconductor photodiode that established independently and succeed in the containerless solidification experiment of a Nd-Fe allys sample. Furthermore, the result that becomes evident to, the generation of the metastable phase that has the new structure and physical properties that are not obtained on the ground bt the large undercooling effect that is expected removal and microgravity environment of the core generation site by an application person original view point, in other words, containerless process was shown. Less
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