Silver Metcar is a silver impregnated, carbon-graphite material useful for electrical
applications that require low resistance, low voltage drop and low electrical
noise. The carbon-graphite in Silver Metcar provides self-lubricating
properties and the pure silver provides high and constant electrical
conductivity. The material is corrosion resistant, dimensionally stable and has
a heavy overload capacity. Additives to the carbon-graphite base material
improve its self-lubricating properties in the dry atmospheres that occur at
high altitude and in space. Silver Metcar cannot melt or weld to another metal
surface because the carbon-graphite base material will not melt. It can be
silver plated so that it can be soldered to metal parts such as leaf springs or
conventional brush holders.
To make the Silver Metcar materials, solid
carbon-graphite base materials, in rings or blocks, are submerged in pure,
molten silver and the silver is forced into the porosity of the carbon-graphite
material using extremely high gas pressure. Most of the Silver Metcar grades
contain approximately fifty percent silver by weight. X-ray inspection is used
to ensure that each Silver Metcar part is uniformly impregnated with silver.
Ships, aircraft, rail systems and other
applications that require low electronic interference use the Silver Metcar
material for dc motor brushes, non-welding electrical contacts and rotary slip
ring brushes or contacts. Applications include air traffic control radars,
telecommunications systems and satellite communications systems.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.