zone refining meaning in Hindi

Examples

1. Zone refining is an economically important method for the purification of semiconductors.
2. :: Zone melting ( zone refining ) gives another point of view on the process.
3. Then the germanium is further refined by zone refining Roughly 140 metric tons of germanium are produced each year.
4. For example, in the preparation of a transistor or diode semiconductor, an ingot of germanium is first purified by zone refining.
5. In zone refining, solutes are segregated at one end of the ingot in order to purify the remainder, or to concentrate the impurities.
6. Reprocessing of spent fuel is simplified and more economical for the hydride reactor design, because the so-called process of zone refining can be used for separation.
7. In zone melting, also called zone refining, the first silicon purification method to be widely used industrially, rods of metallurgical grade silicon are heated to melt at one end.
8. The zone melting process that Pfann is known for revolutionized engineering possibilities : " The purity that can be attained by zone refining was absolutely unprecedented in the history of materials processing.
9. Zone refining was invented by John Desmond Bernal and further developed by William Gardner Pfann in Bell Labs as a method to prepare high purity materials, mainly semiconductors, for manufacturing transistors.
10. Zone refining techniques have led to the production of crystalline germanium for semiconductors that has an impurity of only one part in 10 10, making it one of the purest materials ever obtained.