Development of Nano Metal Powders for Ultra‐Low Fire MLC Inner Electrodes

Abstract

The need to reduce metal content, especially Palladium content in the multi layer ceramic components is driven by two motives. The first is the need to reduce material costs which has become a major issue due to the sharp rise and instability of palladium price. The second motive is the need to build components with ever-growing number of layers, in order to achieve better performance.In this paper, a series of new metal powders, which were developed by NanoPowders Industries (NPI), will be discussed. These powders vary in composition, from pure silver, to silver–palladium, silver–platinum and silver–gold alloys. These powders are of very fine particle size. They open a broad working window for MLC design.The different properties of the powders will be discussed in this paper, including melting and sintering behavior.

Nanoparticles alloying in liquids: Laser-ablation-generated Ag or Pd nanoparticles and laser irradiation-induced AgPd nanoparticle alloying

“…An interesting system which has wide practical applications involves AgPd bimetallic nanoparticles. Ag and Pd are completely miscible and AgPd bimetallic nanoparticles are interesting for SERS, electrochemical biosensors [2], catalysts for hydrogen production from formic acid decomposition and the fabrication of micropolymer-electrolyte membrane fuel cells [3], electrodes in multilayer ceramic capacitors [4], which are widely tunable over the entire visible spectrum, plasmonic nanostructures which also remain SERS active [5], as selective hydrogenation catalysts [6], as smart-drug delivery systems in photothermal therapy and chemotherapy [7], and other applications. AgPd alloy nanoparticles in solution are traditionally synthesized by chemical methods involving the simultaneous reduction of Ag and Pd salts in the presence of a reducing and stabilizing agent [8].…”