11.3.1.2 - MATERIALS AND THE ELECTRONIC INDUSTRY

Materials were the perenial sagas of the electronic industry. In the beginning amateurs and researchers used the available materiais either from organic origin: wood, natural resins, cellulose compounds; as well as metallic based: iron, brass, bronze, copper and so forth.
Therefore, the mass production in the electronic industry drove the research for new type of materials derivative from advanced technology. Among them are: metals alloys, ceramics and, mainly the plastic as per illustrated in table 2.

Table 2 – MATERIALS AND THEIR APPLICATIONS IN THE ELECTRONIC INDUSTRY
ORIGIN
COMPOSITION/ALLOY
APPLICATION
TRADE NAME
OBS.
Cellulose derivatives
Cellulose nitrate
Dials
Celluloid
 
Cellulose acetate
Dials, insulation, Recording discs
Fibesto, Plasticele
 
Synthetic resins
Phenol-Formaldehyde
Cabinets, dials,plugs, Panels, insulation,
Special parts
Baquelita, Durez Micarta, Fórmica Catalin
Molded
Laminated
Cast
Urea-Formaldehyde
Gabinetes, dial, knob, etc
Plaskon
 
Natural Resins
Petroleum derivatives
Impregnating materials, battery cases
Cetec Thermoplax
 
Pitch, Asphalt
     
Metal Alloys
Iron-Nickel-Cobalt
Valves metal/glass sealing
Kovar
 
Iron-Aluminium, Nickel-Cobalt
Loudspeakers, magnet core
Alnico
 
Nickel-iron
Core for radio circuits
Permalloy
 
Iron-Magnesium
High frequency core material
Magicore
Bound with ceramics
Me= Iron Oxide
 
Ferroxcube
Me= bivalent elements: Manganese,
Magnesium, Copper, Zinc
Ceramics

Hydrated Magnesium silicate
Insulators, parts for high frequency
Alsimag
Group of material derivative of Steatite
Hydrated Magnesium silicate
Insulators
Kersima
 
Aluminium-Silicon Oxide
Insulators, Sockets
Porcelain
 

The improvement in materials researches, advanced manufacturing process as well as new circuit topologies gave birth of the industrial design.