http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2754225-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_904c2c9beb21d74c810d077d66c90f91 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C47-12 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C101-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C47-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C49-06 |
| filingDate | 2020-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_984d1e0b4a5983c69eb1a5933afdbc8e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1298fe0852c003cbcf90b39656781942 |
| publicationDate | 2021-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2754225-C1 |
| titleOfInvention | Method for producing a highly heat-conductive aluminium-graphite composite |
| abstract | FIELD: composite materials.SUBSTANCE: invention relates to production of highly heat-conductive composite aluminium-graphite materials and can be used in electronics, instrument manufacture, power engineering. The method for producing a highly heat-conductive composite aluminium-graphite material includes preparing a mixture of powders, containing highly crystalline flaked graphite with a particle size in the plane of 100 mcm to 1000 mcm and a thickness of 5 mcm to 20 mcm with an aspect ratio of 5 to 200 and a degree of crystallinity of at least 97% and silicon powder and/or aluminium alloy powder with 3 to 12 wt.% silicon, with an average particle size of 1 to 20 mcm at a ratio of components in the mixture, wt.%: flaked graphite 40 to 80, silicon powder and/or aluminium alloy 20 to 60, producing a porous graphite preform therefrom by layer-by-layer vibration compacting in a metal mould with a thickness of filling of each layer of 3 to 8 mm, a vibration frequency of 80 to 120 Hz, a compaction pressure of 150 to 250 kPa, a compaction duration for each layer of 60 to 90 seconds, heating the mould with the graphite preform to a temperature of 550 to 650°C in the presence of air, impregnating the porous graphite preform with an aluminium alloy melt under pressure imparted by a hydraulic press. The resulting composite material contains 40 to 80 vol.% flaked crystalline graphite and exhibits a heat conductivity in a plane perpendicular to the direction of compacting of 400 to 720 W/mK and the thermal expansion coefficient of 15*10-6 K-1-4*10-6 K-1.EFFECT: invention is aimed at increasing the heat conductivity of the material while simplifying the process and reducing the time for production thereof.6 cl, 7 dwg, 4 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114850471-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115652126-A |
| priorityDate | 2020-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.