O'Reilly logo

Engineering Chemistry by K. Sesha Maheswaramma

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

7

CHEMISTRY OF ENGINEERING MATERIALS

7.1 SEMICONDUCTING AND SUPER CONDUCTING MATERIALS

According to conductivity, elements or materials are broadly classified into three categories. They are as follows:

  1. Conductors
  2. Semiconductors
  3. Insulators

Conductors

They allow the maximum portion of the applied thermal or electric field to flow through them.

For example, metals are good conductors.

Insulators

They do not practically allow the heat or electricity to flow through them.

For example, most organic and inorganic solids, except graphite.

Semiconductors

The thermal and electrical conductivity of a semiconductor at normal temperature lies between that of a conductor and an insulator.

Semiconductors are those solids which are perfect insulators at absolute ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required