Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing
This present work evaluates the influence of microstructure on the fracture toughness of two types of silicon nitride. The two microstructural types of silicon nitride were processed using the gas pressure sintering (GPS) and hot pressing (HP) pathways. The fracture toughness was measured using the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2006-06-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000200006 |
| _version_ | 1811197586318557184 |
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| author | Cláudio V. Rocha Célio A. Costa |
| author_facet | Cláudio V. Rocha Célio A. Costa |
| author_sort | Cláudio V. Rocha |
| collection | DOAJ |
| description | This present work evaluates the influence of microstructure on the fracture toughness of two types of silicon nitride. The two microstructural types of silicon nitride were processed using the gas pressure sintering (GPS) and hot pressing (HP) pathways. The fracture toughness was measured using the Single Edge V-Notch Beam (SEVNB) and Chevron Notch Beam (CNB) methods. The results from both methods for the two forms were in close agreement (with a maximum variation of 5.8%); the K Ic of the material processed by HP was 35% higher than that of GPS and the grain length had a direct influence on the fracture toughness. |
| first_indexed | 2024-04-12T01:17:24Z |
| format | Article |
| id | doaj.art-38287fdf8a7848f7a113a5dd4c08b614 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-12T01:17:24Z |
| publishDate | 2006-06-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-38287fdf8a7848f7a113a5dd4c08b6142022-12-22T03:53:55ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392006-06-019214314610.1590/S1516-14392006000200006Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressingCláudio V. RochaCélio A. CostaThis present work evaluates the influence of microstructure on the fracture toughness of two types of silicon nitride. The two microstructural types of silicon nitride were processed using the gas pressure sintering (GPS) and hot pressing (HP) pathways. The fracture toughness was measured using the Single Edge V-Notch Beam (SEVNB) and Chevron Notch Beam (CNB) methods. The results from both methods for the two forms were in close agreement (with a maximum variation of 5.8%); the K Ic of the material processed by HP was 35% higher than that of GPS and the grain length had a direct influence on the fracture toughness.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000200006fracture toughnesssilicon nitridegas pressure sinteringhot pressing |
| spellingShingle | Cláudio V. Rocha Célio A. Costa Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing Materials Research fracture toughness silicon nitride gas pressure sintering hot pressing |
| title | Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing |
| title_full | Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing |
| title_fullStr | Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing |
| title_full_unstemmed | Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing |
| title_short | Fracture toughness of Si3N4 processed by gas pressure sintering and hot pressing |
| title_sort | fracture toughness of si3n4 processed by gas pressure sintering and hot pressing |
| topic | fracture toughness silicon nitride gas pressure sintering hot pressing |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000200006 |
| work_keys_str_mv | AT claudiovrocha fracturetoughnessofsi3n4processedbygaspressuresinteringandhotpressing AT celioacosta fracturetoughnessofsi3n4processedbygaspressuresinteringandhotpressing |