Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding
The impact of binders and temperature on the rheological properties of feedstocks used in low-pressure powder injection molding was investigated. Experiments were conducted on different feedstock formulations obtained by mixing Inconel 718 powder with wax-based binder systems. The shear rate sensiti...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/7078045 |
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| author | Fouad Fareh Vincent Demers Nicole R. Demarquette Sylvain Turenne Orlando Scalzo |
| author_facet | Fouad Fareh Vincent Demers Nicole R. Demarquette Sylvain Turenne Orlando Scalzo |
| author_sort | Fouad Fareh |
| collection | DOAJ |
| description | The impact of binders and temperature on the rheological properties of feedstocks used in low-pressure powder injection molding was investigated. Experiments were conducted on different feedstock formulations obtained by mixing Inconel 718 powder with wax-based binder systems. The shear rate sensitivity index and the activation energy were used to study the degree of dependence of shear rate and temperature on the viscosity of the feedstocks. The injection performance of feedstocks was then evaluated using an analytical moldability model. The results indicated that the viscosity profiles of feedstocks depend significantly on the binder constituents, and the secondary binder constituents play an important role in the rheological behavior (pseudoplastic or near-Newtonian) exhibited by the feedstock formulations. Viscosity values as low as 0.06 to 2.9 Pa·s were measured at high shear rates and high temperatures. The results indicate that a feedstock containing a surfactant agent exhibits the best moldability characteristics. |
| format | Article |
| id | doaj-art-669b736d2cc74cc58086b0dcb09ecaa6 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-669b736d2cc74cc58086b0dcb09ecaa62025-08-20T02:23:45ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/70780457078045Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection MoldingFouad Fareh0Vincent Demers1Nicole R. Demarquette2Sylvain Turenne3Orlando Scalzo4École de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC, H3C 1K3, CanadaÉcole de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC, H3C 1K3, CanadaÉcole de Technologie Supérieure, 1100 Notre-Dame West, Montréal, QC, H3C 1K3, CanadaPolytechnique Montréal, 2500 Chemin de Polytechnique, Montréal, QC, H3T 1J4, CanadaPratt & Whitney Canada, 1000 boulevard Marie-Victorin, Longueuil, QC, J4G 1A1, CanadaThe impact of binders and temperature on the rheological properties of feedstocks used in low-pressure powder injection molding was investigated. Experiments were conducted on different feedstock formulations obtained by mixing Inconel 718 powder with wax-based binder systems. The shear rate sensitivity index and the activation energy were used to study the degree of dependence of shear rate and temperature on the viscosity of the feedstocks. The injection performance of feedstocks was then evaluated using an analytical moldability model. The results indicated that the viscosity profiles of feedstocks depend significantly on the binder constituents, and the secondary binder constituents play an important role in the rheological behavior (pseudoplastic or near-Newtonian) exhibited by the feedstock formulations. Viscosity values as low as 0.06 to 2.9 Pa·s were measured at high shear rates and high temperatures. The results indicate that a feedstock containing a surfactant agent exhibits the best moldability characteristics.http://dx.doi.org/10.1155/2016/7078045 |
| spellingShingle | Fouad Fareh Vincent Demers Nicole R. Demarquette Sylvain Turenne Orlando Scalzo Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding Advances in Materials Science and Engineering |
| title | Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding |
| title_full | Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding |
| title_fullStr | Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding |
| title_full_unstemmed | Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding |
| title_short | Molding Properties of Inconel 718 Feedstocks Used in Low-Pressure Powder Injection Molding |
| title_sort | molding properties of inconel 718 feedstocks used in low pressure powder injection molding |
| url | http://dx.doi.org/10.1155/2016/7078045 |
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