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https://repositorio.ufrn.br/handle/123456789/31606| Title: | Production of nickel matrix composites reinforced with carbide particles by granulation of fine powders and mechanical pressing |
| Authors: | Martinelli, Antonio Eduardo Fernandes, Maria Roseane P. Klein, Aloisio Nelmo Hammes, Gisele Binder, Cristiano Nascimento, Rubens Maribondo do |
| Keywords: | Powder granulation;Nickel;Tantalum carbide;Niobium carbide;Metal matrix composite |
| Issue Date: | Jan-2017 |
| Publisher: | Elsevier |
| Citation: | FERNANDES, Maria Roseane P.; MARTINELLI, Antonio Eduardo; KLEIN, Aloisio Nelmo; HAMMES, Gisele; BINDER, Cristiano; NASCIMENTO, Rubens M.. Production of nickel matrix composites reinforced with carbide particles by granulation of fine powders and mechanical pressing. Powder Technology, [S.L.], v. 305, p. 673-678, jan. 2017. Elsevier BV. http://dx.doi.org/10.1016/j.powtec.2016.10.053. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S003259101630746X?via%3Dihub. Acesso em: 20 jan. 2021. |
| Portuguese Abstract: | Plain nickel and nickel composites containing either TaC or NbC powders were granulated and sintered after conventional mechanical pressing. The granulation parameters were studied using plain nickel powder to evaluate a binder system consisting of paraffin diluted in hexane, but also the suitable size range of the granules obtained Carbide powders were then wet mixed with nickel and the powder mixtures were granulated using a drum. Flow rate tests were performed and the granules were pressed into pellets, which were dewaxed and sintered. SEM images of the microstructure of the sintered materials were obtained. Green and sintered densities along with Brinell hardness were also evaluated. The results revealed that the concentration of 1.5 wt% of paraffin and granules sieved in the range between 500 and 90 μm contributed towards the development of dense and uniform microstructures of the sintered composites. Finally, the addition of carbides homogeneously increased hardness to nearly double that of plain nickel |
| URI: | https://repositorio.ufrn.br/handle/123456789/31606 |
| ISSN: | 1873-328X |
| Appears in Collections: | CT - DEMAT - Artigos publicados em periódicos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ProductionNickelMatrix_MARTINELI_2016.pdf | 2,18 MB | Adobe PDF |  View/Open |
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