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Optimization of powder injection molding of feedstock based on aluminum oxide and multicomponent water-soluble polymer binder
- 1.0360644 - ÚH 2012 RIV US eng J - Článek v odborném periodiku
Hausnerová, B. - Marcaníková, L. - Filip, Petr - Sáha, P.
Optimization of powder injection molding of feedstock based on aluminum oxide and multicomponent water-soluble polymer binder.
Polymer Engineering and Science. Roč. 51, č. 7 (2011), s. 1376-1382. ISSN 0032-3888. E-ISSN 1548-2634
Grant CEP: GA ČR GA103/08/1307
Výzkumný záměr: CEZ:AV0Z20600510
Klíčová slova: powder injection molding * viscosity * thermogravimetric analysis
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 1.302, rok: 2011
Analyses crucial to optimize powder injection molding of feedstock based on aluminium oxide powder and multicomponent polymeric binder are provided with the aim to obtain defect-free, high density parts.As the critical step of the process is the flow of highly filled (60 vol.%) compound into a mold cavity, rheological properties supplemented by thermal and pressure-volume-temperature characteristics are measured and described.Upon shear deformation the feedstock undergoes structural changes, which are quantified in terms of yield stresses obtained using Herschel-Bulkley and Casson models.Further, the rheological model is developed to describe the flow behaviour of the feedstock in the whole shear rate range measured.Thermogravimetric analysis is performed to optimize debinding step of the process, and two possible ways of the binder removal are proposed – purely thermal and combined solvent/thermal.The quality of the final sintered parts is demonstrated on SEM images of their surfaces.
Trvalý link: http://hdl.handle.net/11104/0198145
Název souboru Staženo Velikost Komentář Verze Přístup Hausnerova_Marcanikova_Filip_Saha_Optimization of powder injection_2011.pdf 3 267.9 KB Vydavatelský postprint vyžádat
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