http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008069722-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_df346b3201750fe7fdf3c56fb840574a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C5-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C5-08 |
| filingDate | 2007-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6bd0577958dc5065b4ffdf7b5e2aa48e |
| publicationDate | 2008-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2008069722-A1 |
| titleOfInvention | Metal alloy manufacturing |
| abstract | Silver alloys containing copper and germanium e.g. about 1 wt % Ge and of very low copper content e.g. about 0.8 wt % Cu can be precipitation hardened to 65 HV or above, whereas alloys of similar copper content and not containing germanium remain soft. In an embodiment, a silver alloy comprises 92.5-97 wt % Ag, 1-4.5 wt % Cu, 0.4-4 wt % Zn, 0.8-1.5 wt % Ge, 0 to 0.2 wt % Si, In or Sn and 0-0.2 wt % Mn, the balance being boron as grain refiner, incidental ingredients and impurities. The said alloy preferably comprises boron as grain refiner added as a boron hydride, e.g. sodium borohydride. A further group of alloys comprises a ternary alloy of silver, copper and germanium containing from more than 93.5 wt % to 95.5 wt % Ag, from 0.5 to 3 wt % Ge and the remainder, apart from incidental ingredients (if any), impurities and grain refiner, copper, the grain refiner being sodium borohydride or another boron hydride. Silicon-containing casting grain that gives rise to bright as-cast products is also disclosed. In a further embodiment, a zinc-containing silver alloy resistant to tarnish under severe conditions e.g. exposure to human sweat or French dressing comprises 1-5 wt % Zn, 0.7-3 wt % Cu, 0.1-3 wt % Ge, 0-0.3 wt % Mn, 0-0.25 wt % Si, B in an amount effective for grain refinement, up to 0.5 wt % incidental ingredients, the balance being Ag in an amount of 92.5-96 wt %, and impurities. A preferred manufacturing method giving an alloy with favourable physical properties involves melting together the ingredients, and incorporating boron by dispersing into molten silver alloy to foirn the whole or a precursor pait of said alloy a compound selecting fiom alkyl boron compounds, boron hydrides, boron halides, boron-containing metal hydrides, boron-containing metal halides and mixtures thereof The alloy is particularly suitable for castings which may be hardened in an oven e.g. at about 300° C. for 30-45 min. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2829622-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013032665-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9428821-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2485374-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112143931-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9005522-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9194024-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014065011-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9217190-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010322818-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2485374-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9267191-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014127075-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10697044-B1 |
| priorityDate | 2004-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 98.