http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111742079-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05df26656ced0dbca5c34b52cbbb79e4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C2222-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-365 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-364 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C22-362 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C22-40 |
| filingDate | 2019-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6cbad7f474213721a08af625c9041619 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_11052c80de969dc1c7d585f61b76e905 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8d5a7d1edb75a8f6ce745d087dc44ca |
| publicationDate | 2020-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111742079-A |
| titleOfInvention | Selective Phosphating Methods for Composite Metal Structures |
| abstract | The present invention relates to a method for chemical pretreatment and selective phosphating of a composite metal structure comprising at least one part made of aluminium and at least one part made of zinc, and optionally iron Another part made, wherein the method comprises: (1) in a first step, treating the composite metal structure with an aqueous zinc phosphating composition, which results in the formation of a coating weight on a part made of iron and zinc Surface-covered crystalline zinc phosphate layer of 0.5-5 g/m 2 but not producing a zinc phosphate layer with a coating weight of at least 0.5 g/m 2 on aluminium parts, followed by an intermediate water washing operation, (II) in the second step , applying an aqueous acidic passivation composition with a pH of 2.0-5.5 to the composite metal structure, wherein the acidic passivation composition removes no more than 50% of the crystalline zinc phosphate on parts made of zinc and iron, but A passivation layer is formed on the aluminum part, the passivation layer does not constitute a surface-covered crystalline phosphate layer, wherein the zinc phosphating composition in step (I) contains a certain content of sodium and/or potassium ions and aluminum ions, wherein The temperature of the zinc phosphating composition in step (1) is 20-65 ℃, and comprises the free fluoride ion content of at least 5mg/l but not more than 200mg/l, wherein the zinc phosphating composition exists in BF Calculated, At least 0.04 g/l but not more than 3.2 g/l of boron in the form of a water-soluble inorganic compound, and wherein the number of KCl-added free acid points in the zinc phosphating composition is at least 0.6 points. The present invention also relates to corresponding zinc phosphating compositions, concentrates for the preparation of such compositions, corresponding composite metal structures and uses thereof. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115261841-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115198264-A |
| priorityDate | 2018-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 96.