Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor
Active filler controlled pyrolysis of polymers (AFCOP) is a recent method for obtaining near-net shaped ceramic bodies. Alumina based composites have been developed for use as cutting tools, so knowledge of the surface composition is extremely important because it is directly related to the hardness...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2006-09-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300005 |
| _version_ | 1811284348728508416 |
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| author | Wilson Acchar José Roberto Bezerra da Silva |
| author_facet | Wilson Acchar José Roberto Bezerra da Silva |
| author_sort | Wilson Acchar |
| collection | DOAJ |
| description | Active filler controlled pyrolysis of polymers (AFCOP) is a recent method for obtaining near-net shaped ceramic bodies. Alumina based composites have been developed for use as cutting tools, so knowledge of the surface composition is extremely important because it is directly related to the hardness and wear resistance Samples containing a fixed concentration of 60 wt. (%) of polysiloxane and a mixture of metallic niobium and alumina powder were homogenized, uniaxially warm pressed at 80 °C and subsequently pyrolyzed in flowing argon at 1200, 1400 and 1500 °C. Analysis of the surface composition was carried out by X ray photoelectron spectroscopy, infrared spectroscopy, X ray diffraction and scanning electron microscopy. The results have indicated that the formation of the phases on the surface depends strongly on the niobium/carbon ratio in the raw materials. |
| first_indexed | 2024-04-13T02:28:11Z |
| format | Article |
| id | doaj.art-26442bb57fca494eafc440ab3cea448a |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-13T02:28:11Z |
| publishDate | 2006-09-01 |
| 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-26442bb57fca494eafc440ab3cea448a2022-12-22T03:06:42ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392006-09-019327127410.1590/S1516-14392006000300005Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursorWilson AccharJosé Roberto Bezerra da SilvaActive filler controlled pyrolysis of polymers (AFCOP) is a recent method for obtaining near-net shaped ceramic bodies. Alumina based composites have been developed for use as cutting tools, so knowledge of the surface composition is extremely important because it is directly related to the hardness and wear resistance Samples containing a fixed concentration of 60 wt. (%) of polysiloxane and a mixture of metallic niobium and alumina powder were homogenized, uniaxially warm pressed at 80 °C and subsequently pyrolyzed in flowing argon at 1200, 1400 and 1500 °C. Analysis of the surface composition was carried out by X ray photoelectron spectroscopy, infrared spectroscopy, X ray diffraction and scanning electron microscopy. The results have indicated that the formation of the phases on the surface depends strongly on the niobium/carbon ratio in the raw materials.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300005aluminaniobium carbideX ray photoelectron spectroscopy |
| spellingShingle | Wilson Acchar José Roberto Bezerra da Silva Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor Materials Research alumina niobium carbide X ray photoelectron spectroscopy |
| title | Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| title_full | Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| title_fullStr | Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| title_full_unstemmed | Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| title_short | Surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| title_sort | surface characterization of alumina reinforced with niobium carbide obtained by polymer precursor |
| topic | alumina niobium carbide X ray photoelectron spectroscopy |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000300005 |
| work_keys_str_mv | AT wilsonacchar surfacecharacterizationofaluminareinforcedwithniobiumcarbideobtainedbypolymerprecursor AT joserobertobezerradasilva surfacecharacterizationofaluminareinforcedwithniobiumcarbideobtainedbypolymerprecursor |