http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102719864-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1b95a0151fe6cf57f119866e3a10c11 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D3-56 |
| filingDate | 2012-06-28^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-03-25^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd16cbd50b33989a10436e641660fbfc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebd41b134ad2563d5ffd908d1377cd37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_707592edec4daea96d842de4282f2a13 |
| publicationDate | 2015-03-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102719864-B |
| titleOfInvention | Method for preparing cerium-containing zinc coating |
| abstract | The invention discloses a method for preparing cerium-containing zinc coating. The method comprises the following main steps: (1) sulfate plating solution for ions to be plated is prepared, wherein the concentration of zinc sulfate is 50-300g/L, and the concentration of cerium sulfate is 0.2-4g/L; sodium citrate serving as rare earth complexing agent, with the concentration of 5-60g/L is added, and sodium hypophosphite with the concentration of 5-60g/L is added; dilute sulfuric acid is adopted to adjust the pH value of the plating solution to be 1-4; the temperature of the plating solution is controlled to be 15-60 DEG C; (2) the direct current electrodeposition method is adopted for plating; in a plating bath containing the plating solution, carbon steel used as the plated material is used as the cathode, a platinum sheet is adopted as the anode, direct current is introduced to the plating bath, the current density is 0.6-4 A/cm<2>, and the plating time is 1-6 min; and finally, the concentration of cerium in the prepared coating is 0.05-0.3 wt%. Aiming at the sulfate system of the DC (direct current) electrodeposition zinc coating, the sodium citrate and the sodium hypophosphite as the substances are adopted for promoting the deposition of cerium, so that the cathodic polarization behavior of cerium in deposition can be improved, the zinc coating containing trace cerium is finally obtained, and the corrosion resistance of the coating is obviously improved. |
| priorityDate | 2012-06-28^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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