thoriate

Thân thiện

Definition

1. Verb:
   • To impregnate with thorium oxide: The process of treating a material, typically a metal filament in an electron-emitting device, with thorium oxide (ThO₂). This treatment is done specifically to enhance the material's thermionic emission properties, meaning it releases electrons more easily when heated.

Usage Examples

• Verb:
  • To improve the efficiency of the cathode, engineers decided to thoriate the tungsten filament.
  • Early radio tubes often used thoriated filaments to achieve better performance.

Advanced Usage

• Technical/Historical Context: The verb "thoriate" is highly specialized and primarily used in historical or technical discussions of vacuum tube technology, thermionics, and early electronics. It describes a specific metallurgical or chemical coating process.
  • The process to thoriate a filament involved heating it in an atmosphere containing thorium.
• Passive Voice: Commonly used in the passive voice to describe the state of a treated material.
  • The thoriated tungsten wire exhibited significantly lower work function.

Variants and Related Words

• Thoriated (adj): Describing a material that has been treated with thorium oxide.
  • A thoriated cathode.
• Thoration (n): The act or process of thoriating (less common).
• Thorium (n): The radioactive chemical element (Th) used in the process.

Synonyms

• Coat with thorium oxide: A descriptive phrase with the same meaning.
• Dope with thoria (Thoria is an older name for thorium dioxide): A technical synonym.

Related Phrases

• Increase thermionic emission: The primary purpose of thoriating.
• Lower the work function: The technical result of thoriating a metal surface.

Học thuật

Verb

1. impregnate with thorium oxide to increase thermionic emission