Lanthanum Boride, Ring, 99.5%, 39 mm OD x 7 mm ID x 5 mm th.

Lanthanum boride is used as a sputtering target material to create thin films for high-performance electron emitters and protective coatings due to its low work function and high chemical stability.

As a rare earth boride, it is utilized in advanced electronics and vacuum technology as a superior thermionic cathode material with high brightness and long service life.

LaB6 is employed as a refractory ceramic material capable of maintaining structural integrity and low volatility at extremely high temperatures in vacuum environments.