http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H05238742-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_628db03ba4f8948ecd211fb3d46b9ef4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S428-90 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-70668 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-70673 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-706 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D7-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D5-23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F10-10 |
| filingDate | 1991-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3847adc39706c9a92a00f1b83cad6b4d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_118a0c19d6581524dc0b24e2e27f6a3b |
| publicationDate | 1993-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H05238742-A |
| titleOfInvention | Non-acicular improved iron oxide with high coercive force for high density magnetic recording and method of manufacturing the same |
| abstract | (57) [Abstract] [Objective] The present invention relates to a high coercive force-improved non-acicular iron oxide for high density magnetic recording and a method for producing the same, which has a high coercive force, an extremely small coercive force temperature coefficient, and a high saturation magnetization value. And has a high remanent magnetization value, a fine particle size, maintains the same rectangular ratio and chemical properties as conventional iron oxide, and is easier to disperse and coat, The purpose of the present invention is to provide a non-acicular improved magnetite and maghemite that do not change their properties after hardening and have accelerated aging resistance. [Structure] Manganese, cobalt and zinc ions containing a soluble salt are added to an iron chloride solution, and a suitable alkali solution is further added to obtain a precipitate. After aging for a certain period of time, the precipitate is filtered and then the precipitate is added. Was washed with deionized water and dried, after which the precipitate was calcined in air and further reduced in an atmosphere consisting of nitrogen and hydrogen saturated with steam to obtain a magnetite structure. The method is characterized by at least the steps of oxidizing and cooling in air, annealing at a high temperature and then air cooling. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011057473-A |
| priorityDate | 1991-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.