http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H11130439-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5fb9798bf05293ffe6d2e0fde58c3cdb |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00 |
| filingDate | 1997-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53ba84172b45b1798e7ebe2f007bb56c |
| publicationDate | 1999-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H11130439-A |
| titleOfInvention | Spindle-shaped goethite particle powder and method for producing the same, spindle-shaped hematite particle powder and method for producing the same, and spindle-shaped metal magnetic particle powder containing iron as a main component and method for producing the same |
| abstract | PROBLEM TO BE SOLVED: To provide a spindle-shaped goethite particle powder, a spindle-shaped hematite particle powder, and a spindle-shaped metal magnetic particle powder. SOLUTION: The existence ratio of Co is 50:50 to 95: 5. The spindle-shaped goethite particle powder in which Al is present only in the surface layer portion is a water suspension containing a ferrous-containing precipitate obtained by reacting a mixed alkali aqueous solution and a ferrous salt aqueous solution. After aging the liquid, an oxygen-containing gas is passed to generate spindle-shaped goethite seed crystal particles, and an oxygen-containing gas is passed through an aqueous suspension containing the seed crystal particles to form a goethite layer on the surface of the seed crystal particles. When growing to produce spindle-shaped goethite particles, a Co compound of 10 to 45 atomic% is added at the time of generation, and an oxidation reaction is performed in the range of 30 to 80% of the total Fe 2+. Is obtained by making the superficial velocity of aeration twice or more the speed at the time of generation, and adding 5 to 20 atomic% of an Al compound. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2001237114-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6309479-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0999185-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6398863-B1 |
| priorityDate | 1997-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.