| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_000a885a2aeffa21c19845f861ef456e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N5-33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6581
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-786
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-762
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-446
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9646
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9653
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-656
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-9607
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6567
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6562
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3284
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5445
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-5436 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-638
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-6455
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-547 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-547 |
| filingDate |
2015-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9fb72853837d731b4931bad73f1f6a60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7b06c2dc911a1caf309f57693760870 |
| publicationDate |
2016-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2016083302-A1 |
| titleOfInvention |
Polycrystalline chalcogenide ceramic material |
| abstract |
The invention relates to a polycrystalline IR transparent material produced by sintering chalcogenide powder, e.g., ZnS powder, using hot uniaxial pressing followed by hot isostatic pressing. The microstructure of the material described in this disclosure is much finer than that found in material produced using the state of the art process. By using a powder with a particle size fine enough to improve sintering behavior but coarse enough to prevent a lowering of the wurtzite-sphalerite transition temperature, a highly transparent material with improved strength is created without degrading the optical properties. A high degree of transparency is achieved during hot pressing by applying pressure after the part has reached a desired temperature. This allows some degree of plastic deformation and prevents rapid grain growth which can entrap porosity. The crystallographic twins created during this process further inhibit grain growth during hot isostatic pressing. |
| priorityDate |
2012-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |