PROCESS FOR PREPARING A FLUORESCENT MAGNETIC NANO COMPOSITE

The invention relates to a process for preparing a fluorescent magnetic composite for applications in the field of non-destructive defectoscopic control. According to the invention, the process consists in dispersing the iron oxide within an aqueous solution of iron oxalate and polyvinylpyrrolidone...

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Bibliographic Details
Main Authors MORARI CRISTIAN, MĂLĂERU TEODORA, GEORGESCU GABRIELA
Format Patent
LanguageEnglish
Romanian
Published 30.10.2018
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
MANUFACTURE OR TREATMENT THEREOF
NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS
NANOTECHNOLOGY
PERFORMING OPERATIONS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
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Summary:The invention relates to a process for preparing a fluorescent magnetic composite for applications in the field of non-destructive defectoscopic control. According to the invention, the process consists in dispersing the iron oxide within an aqueous solution of iron oxalate and polyvinylpyrrolidone in deionized water, refluxing at the temperature of 55...58°C while stirring for 1...2 h, adding by dripping an oxalic acid solution for changing the pH value to 2...3, reflux boiling at the temperature of 100°C for 3...6 h in argon atmosphere, to result in an aqueous suspension of magnetite nano particles whereto an aqueous solution of nickel acetate is admixed at a temperature of 50...65°C, the resulting suspension being refluxed for 2...6 h, while stirring, at a rate of 1000...1200 rpm, to finally obtain a fluorescent magnetic nano composite as fluorescent dyestuff - FeO.
Bibliography:Application Number: RO20150000635