http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102674819-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_72206ca96c18ac1fe3f5b21bb02a5bb1 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-117 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-622 |
| filingDate | 2012-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd0f6ba25b947ec88fa3cd5d8f8d560d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5f6453d4d622a369cc711fddb52d9e12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ac45d9e05f137ca66036d8d5a16a262 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98b11070320c9e367798bb6153059faa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae875e1e7dae3519ec90210219040b8c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66b105e8ccfc5c8d680ba126a60943e2 |
| publicationDate | 2013-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102674819-B |
| titleOfInvention | High-toughness aluminum oxide ceramic, and preparation method and application thereof |
| abstract | The invention discloses a high-toughness aluminum oxide ceramic, and a preparation method and application thereof. The preparation method comprises the following steps: by using aluminum hydroxide as the initial raw material and pretreated CNTs as a toughener, adding a sintering assistant Y2O3 in the form of Y(NO3)3 and adding dispersant, and carrying out uniform ultrasonic dispersion; while continuously stirring, dropwisely adding a slightly alkaline solution to form an additive ion precipitate, and forming a heterogeneous nucleation precipitate by using aluminum oxide particles and CNTs as the nucleating center; filtering, washing with alcohol, and drying to obtain nano mixed powder; and carrying out discharge plasma sintering and twin polishing treatment to obtain the high-toughness aluminum oxide ceramic. The invention successfully solves the problem that the CNTs and Al2O3 can not be easily evenly mixed proportionally directly by ball milling when using Y2O3 ceramic powder as a sintering assistant; and the invention also solves the problem that the Al2O3 ceramic can not be completely compacted when being sintered at low temperature, and has crystal grain growth when being sintered at high temperature. |
| priorityDate | 2012-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.