thoriate
Definition
- 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.
Verb
-
impregnate with thorium oxide to increase thermionic emission