Diffusion of silver during sintering in high permittivity COG dielectrics

To achieve cost reduction in multi-layer ceramic capacitors and actuators, which use a silver-palladium alloy as internal electrode, the trend is to use alloys with the highest silver content possible. This requires ceramic materials which must be sintered at a relative low temperature. Goal is to avoid much diffusion of silver into the ceramics...

Microwave flash sintering of inkjet-printed silver tracks on polymer substrates

Microwave flash sintering of inkjet printed colloidal silver dispersions on thin polymer substrates was studied as a function of the antenna area and initial resistance. The presence of conductive antennae promotes nanoparticle sintering in predried ink lines. For dried nanoparticle inks connected to antennae, sintering times of 1 s are...

CAD for Rapid Manufacturing

Effects of processing on microstructure and properties of SLS Nylon 12

There currently exists the requirement to improve reproducibility and mechanical properties of SLS Nylon parts for rapid manufacturing (RM). In order to achieve this, further fundamental research is needed and this paper addresses this need by investigating effects of potential sources of the lack of reproducibility and reports effects in...

Benchmarking stiffness of current sprint spikes and concept selective laser sintered nylon outsoles

Stefanyshyn and Fusco (2004) demonstrated that sprint performance can be improved if the stiffness of standard running spikes is increased. The authors concluded that in order to maximise performance individual tuning of the athlete's shoe stiffness to the athlete's particular characteristics is required. Rapid manufacturing processes, such as...

Sintering, sinterforging and explosive compaction to densify the dual phase nanocomposite system Y2O3-doped ZrO2 and RuO2

Yttria-doped zirconia/ruthenia powders were made by co-precipitation. The calcined powders were compacted into green compacts using standard pressing techniques such as isostatical compaction compared to explosive compaction. Explosive compaction (EC) led to the highest density, but also to cracking of the compacts. The zirconia/ruthenia powders...