An experimental analysis of the influence of the ink properties on the drop formation for direct thermal inkjet printing of high solid content aqueous 3Y-TZP suspensions |
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| Authors: | Emre Özkol Jörg Ebert Rainer Telle |
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| Affiliation: | 1. Department of Printing Science and Technology, Institute for Color Science and Technology, PO BOX 16765654, Tehran, Iran.;2. Department of Nanomaterials & Nano coatings, Institute for Color Science and Technology, PO BOX 16765654, Tehran, Iran;1. KU Leuven, Department of Materials Engineering, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium;2. KU Leuven, Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7 blok a, B-3000 Leuven, Belgium;3. KU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300, B-3001 Leuven, Belgium;1. Centro de Investigaciòn en Materiales Avanzados, CIMAV S.C., Laboratorio Nacional de Nanotecnologìa, Miguel de Cervantes # 120 Comp.Ind., Chihuahua 31109, Mexico;2. CEIT and TECNUN (University of Navarra), 20018 San Sebastian, Spain;3. Interceramic, Department of R&D, Av. Carlos Pacheco 7200, Chihuahua 31060, Mexico |
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| Abstract: | Direct inkjet printing (DIP) of ceramics as a novel solid freeform fabrication (SFF) method has been subjected to extensive research in the recent years. The studies have focused either on the simulation of the drop ejection or the production of demonstration objects. The aim of this study was to close the gap between the simulation results and product oriented studies. 3Y-TZP inks of 24 vol.% solid content were prepared and characterized in terms of physical properties as well as dimensionless quantities (Re, We, Ca, and Oh). The drop volume and velocity were estimated by considering a constant ejection pressure but varying physical properties of the ejected inks. A thermal inkjet printer was used to eject arrays of single drops as well as three-dimensional 3Y-TZP demonstration objects. The drop arrays were analyzed to determine the relation between the ink properties and the drop formation. The demonstration object was sintered close to the full density. |
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