http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107603490-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09G1-02 |
| filingDate | 2017-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107603490-B |
| titleOfInvention | Samarium-cerium-based polishing powder and preparation process thereof |
| abstract | A samarium-cerium-containing polishing powder comprises the following components in molar ratio: sm 2 O 3 /TREO：1.4×10 ‑4 ‑2.9×10 ‑2 ，Nd 2 O 3 /TREO：2.97×10 ‑4 ‑7.43×10 ‑3 The balance being CeO 2 and/TREO. The cerium-based polishing powder is prepared by taking a rare earth salt solution containing samarium as a main raw material, synthesizing by adopting a coprecipitation mode and a fluorine-containing mixed precipitator, and then washing, filtering, calcining, crushing, grading and the like. According to the invention, samarium is introduced into the rare earth raw material, so that the edges and corners of the obtained cerium-based rare earth polishing powder are sharper, the crystal grains are uniform and compact, and the cerium-based rare earth polishing powder has better grinding efficiency and recycling performance while the surface precision is ensured. Meanwhile, the preparation method has the advantages of simple preparation process, wide raw material source and the like. |
| priorityDate | 2017-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.