Morphological influences on the electrical sintering process of Aerosol Jet and Ink Jet printed silver microstructures

A rapid manufacturing method for fabrication of 3D ceramic parts will be presented. The structural information is printed by ink jet in powder layers of 80 µm thickness. Different granulated powders can be used, such as zirconia and alumina if they show good flow ability. After printing the structures a heating process takes place. After these the parts can be picked out from the powder bed. The manufactured parts can be impregnated with epoxy. Another option is the infiltration with ceramic slurries and glass with sintering to higher density. The sintering process has been studied and the shrinkage and material properties evaluated. The interrelationship between the raw material qualities, infiltration media and the sinter parameters as well as the material-specific properties such as density and stability will be presented. The manufacturing method is used for fabrication of moulds and cores for casting processes. Otherwise the process can be used for fast fabrication of models and prototypes. The possibilities to use these methods for implant manufacturing will be shown. A cost analysis has been performed comparing direct manufacturing of small batches of components to mould injection processes.

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Optimization of Hybrid Ink Formulation and IPL Sintering Process for Ink-Jet 3D Printing

Nanomaterials ◽

10.3390/nano11051295 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1295

Author(s):

Jae-Young Lee ◽

Cheong-Soo Choi ◽

Kwang-Taek Hwang ◽

Kyu-Sung Han ◽

Jin-Ho Kim ◽

...

Keyword(s):

3D Printing ◽

Complex Structure ◽

Operating Conditions ◽

Conductive Layer ◽

Sintering Process ◽

Insulation Layer ◽

Printing Technology ◽

3D Printing Technology ◽

Ink Jet ◽

Multiple Materials

Ink-jet 3D printing technology facilitates the use of various materials of ink on each ink-jet head and simultaneous printing of multiple materials. It is suitable for manufacturing to process a complex multifunctional structure such as sensors and printed circuit boards. In this study, a complex structure of a SiO2 insulation layer and a conductive Cu layer was fabricated with photo-curable nano SiO2 ink and Intense Pulsed Light (IPL)-sinterable Cu nano ink using multi-material ink-jet 3D printing technology. A precise photo-cured SiO2 insulation layer was designed by optimizing the operating conditions and the ink rheological properties, and the resistance of the insulation layer was 2.43 × 1013 Ω·cm. On the photo-cured SiO2 insulation layer, a Cu conductive layer was printed by controlling droplet distance. The sintering of the IPL-sinterable nano Cu ink was performed using an IPL sintering process, and electrical and mechanical properties were confirmed according to the annealing temperature and applied voltage. Then, Cu conductive layer was annealed at 100 °C to remove the solvent, and IPL sintered at 700 V. The Cu conductive layer of the complex structure had an electrical property of 29 µΩ·cm and an adhesive property with SiO2 insulation layer of 5B.

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Formation of Mn-Co-Ni-O Nanoceramic Microspheres Using In Situ Ink-Jet Printing: Sintering Process Effect on the Microstructure and Electrical Properties

Small ◽

10.1002/smll.201600470 ◽

2016 ◽

Vol 12 (36) ◽

pp. 5027-5033 ◽

Cited By ~ 13

Author(s):

Long Chen ◽

Qinan Zhang ◽

Jincheng Yao ◽

Junhua Wang ◽

Wenwen Kong ◽

...

Keyword(s):

Electrical Properties ◽

Sintering Process ◽

Ink Jet Printing ◽

Ink Jet ◽

Jet Printing

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Microstructural Study of Diamond Deformed Under High Pressure and Temperature

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100118072 ◽

1985 ◽

Vol 43 ◽

pp. 230-231

Author(s):

E. F. Koch

Keyword(s):

High Pressure ◽

High Temperature ◽

Lattice Structure ◽

Diamond Particle ◽

Polycrystalline Diamond ◽

Sintering Process ◽

Ion Milling ◽

Sintered Compact ◽

Transmission Electron ◽

High Pressure Sintering

Because of the extremely rigid lattice structure of diamond, generating new dislocations or moving existing dislocations in diamond by applying mechanical stress at ambient temperature is very difficult. Analysis of portions of diamonds deformed under bending stress at elevated temperature has shown that diamond deforms plastically under suitable conditions and that its primary slip systems are on the ﹛111﹜ planes. Plastic deformation in diamond is more commonly observed during the high temperature - high pressure sintering process used to make diamond compacts. The pressure and temperature conditions in the sintering presses are sufficiently high that many diamond grains in the sintered compact show deformed microtructures.In this report commercially available polycrystalline diamond discs for rock cutting applications were analyzed to study the deformation substructures in the diamond grains using transmission electron microscopy. An individual diamond particle can be plastically deformed in a high pressure apparatus at high temperature, but it is nearly impossible to prepare such a particle for TEM observation, since any medium in which the diamond is mounted wears away faster than the diamond during ion milling and the diamond is lost.

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Fabrication and Mechanical Properties of ultra fine WC-6wt.%Co by Spark Plasma Sintering Process

Korean Journal of Metals and Materials ◽

10.3365/kjmm.2011.49.1.040 ◽

2011 ◽

Vol 49 (01) ◽

pp. 40-45 ◽

Cited By ~ 4

Author(s):

Hyun-Kuk Park ◽

Seung-Min Lee ◽

Hee-Jun Youn ◽

Ki-Sang Bang ◽

Ik-Hyun Oh

Keyword(s):

Mechanical Properties ◽

Spark Plasma Sintering ◽

Sintering Process ◽

Plasma Sintering ◽

Spark Plasma

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Oriented Luminescent Nanostructures From Single Molecules Of Conjugated Polymers

MRS Proceedings ◽

10.1557/proc-771-l9.8 ◽

2003 ◽

Vol 771 ◽

Author(s):

Adosh Mehta ◽

Pradeep Kumar ◽

Jie Zheng ◽

Robert M. Dickson ◽

Bobby Sumpter ◽

...

Keyword(s):

Conjugated Polymers ◽

Polarization Anisotropy ◽

Emission Pattern ◽

Spectral Signatures ◽

Dipole Emission ◽

Ink Jet ◽

Molecular Scale ◽

Jet Printing ◽

Photochemical Stability ◽

Printing Techniques

AbstractDipole emission pattern imaging experiments on single chains of common conjugated polymers (solubilized poly phenylene vinylenes) isolated by ink-jet printing techniques have revealed surprising uniformity in transition moment orientation perpendicular to the support substrate. In addition to uniform orientation, these species show a number of striking differences in photochemical stability, polarization anisotropy,[1] and spectral signatures[2] with respect to similar (well-studied) molecules dispersed in dilute thin-films. Combined with molecular mechanics simulation, these results point to a structural picture of a folded macromolecule as a highly ordered cylindrical nanostructure whose long-axis (approximately collinear with the conjugation axis) is oriented, by an electrostatic interaction, perpendicular to the coverglass substrate. These results suggest a number of important applications in nanoscale photonics and molecular-scale optoelectronics.

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