http://rdf.ncbi.nlm.nih.gov/pubchem/patent/BR-102019020715-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0ac2c2182e722253ed39dd9c2ff9b586 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B82Y25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-053 |
| filingDate | 2019-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8767527e9df216ad802170f2e9e170c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c4519903f06aa5fbd735bb4edd19022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b04d2416ef57c87d39b6aa9a50217f70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_233e3bea861b804eedf335eba666da14 |
| publicationDate | 2021-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | BR-102019020715-A2 |
| titleOfInvention | process for the production of ndxcoy magnetic nanostructures covered with pvp |
| abstract | process for the production of ndxcoy magnetic nanostructures covered with pvp. rare earth intermetallic compounds and transition metal are widely used in the production of permanent magnets, and have, in general, ferromagnetic behavior. in general, most of these compounds are produced in an arc furnace or in ball mills, physical methods that do not allow a control on the variables of these processes. Currently, much of the research in this area is related to the production of these compounds through chemical methods. In this patent, a process is proposed for the synthesis of magnetic nanoparticles of the ndxcoy type via the polyol method with the use of pvp to protect the particles against oxidation. the process uses tetraethylene glycol as a solvent and reducing agent, providing a better control of the process variables, as a protective agent against oxidation, the polyvinylpyrrolidone (pvp) polymer is used. in all samples, the magnetic hysteresis measurements showed ferromagnetic behavior and the magnetization measurements as a function of temperature showed the ferromagnetic transition temperatures for the present phases. the synthesis method proved to be efficient in the production of ndxcoy nanoparticles, this result is promising for the development of nanostructured permanent magnets. |
| priorityDate | 2019-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.