Encyclopedia Britannica
Encyclopedia Britannica
SUBSCRIBE
SUBSCRIBE
SUBSCRIBE TO PREMIUM
  • Home
  • Biographies
  • Animals & Nature
  • History & Society
  • Science & Tech
  • Geography & Travel
  • Arts & Culture
  • ProCon
  • Money
  • Games & Quizzes
  • Videos
  • Today in History
  • Dictionary
  • New Articles
Biographies
  • Browse Biographies
Animals & Nature
  • Birds, Reptiles & Other Vertebrates
  • Environment
  • Fossils & Geologic Time
  • Insects & Other Invertebrates
  • Mammals
  • Plants
History & Society
  • History
  • Philosophy & Religion
  • Politics, Law & Government
  • Society & Social Issues
Science & Tech
  • Health & Medicine
  • Science
  • Technology
Geography & Travel
  • Geography & Travel
Arts & Culture
  • Entertainment & Pop Culture
  • Literature
  • Sports & Recreation
  • Visual Arts
  • Image Galleries
  • Podcasts
  • Summaries
  • Top Questions
  • Lists and Stories
  • Britannica Kids
Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
molybdenum disilicide
References
Britannica AI Icon

molybdenum disilicide

chemical compound
Written by
The Information Architects of Encyclopaedia Britannica

The Information Architects maintain a master list of the topics included in the corpus of  Encyclopædia Britannica, and create and manage the relationships between them.

The Information Architects of Encyclopaedia Britannica

Learn about this topic in these articles:

  • Figure 1: Schematic diagram of a zirconia oxygen sensor used to monitor automobile exhaust gases. The sensor, approximately the size of a spark plug, is fitted into the exhaust manifold of an automobile engine. The thimble-shaped zirconia sensor, sandwiched between thin layers of porous platinum, is exposed on its interior to outside air and on its exterior to exhaust gas passing through slits in the sensor shield. The two platinum surfaces serve as electrodes, conducting a voltage across the zirconia that varies according to the difference in oxygen content between the exhaust gas and the outside air.
    conductive ceramics
    / Heating elements

    Both SiC and molybdenum disilicide (MoSi2) form protective silica-glass surface layers, which protect them from oxidation in oxidizing atmospheres. MoSi2 is a semimetal with a high conductivity. Lanthanum chromite (LaCr2O4) is a small polaron conductor; substituting alkaline-earth ions (e.g., calcium, or Ca2+) for La3+ results in an equal…

    Read More

    Both SiC and molybdenum disilicide (MoSi2) form protective silica-glass surface layers, which protect them from oxidation in oxidizing atmospheres. MoSi2 is a semimetal with a high conductivity. Lanthanum chromite (LaCr2O4) is a small polaron conductor; substituting alkaline-earth ions (e.g., calcium, or Ca2+) for La3+ results in an equal…

    Read More