Black Lead (Noun)
Meaning
Used as a lubricant and as a moderator in nuclear reactors.
Classification
Nouns denoting substances.
Examples
- Graphite is a form of black lead that is commonly used as a lubricant in mechanical systems due to its low friction coefficient.
- Black lead is used as a neutron moderator in some nuclear reactors because of its ability to slow down neutrons without capturing them.
- The control rods in the nuclear reactor were made of boron and surrounded by a sheath of black lead to prevent corrosion.
- The lubricating properties of black lead make it an ideal material for use in machinery that is subject to high temperatures and pressures.
- The nuclear reactor used a mixture of black lead and other materials to control the reaction rate and maintain a stable temperature.