Лантана Гексаборид (ЛаБ6) Керамический стержень

Керамический рукав из нитрида бора для печи
Шестиугольный керамический цилиндр из нитрида бора с высокой теплопроводностью
Lanthanum Hexaboride Ceramics Rod 1
Lanthanum Hexaboride Ceramics Rod 3
Lanthanum Hexaboride Ceramics Rod 1
Lanthanum Hexaboride Ceramics Rod 3

Лантана Гексаборид (ЛаБ6) Керамический стержень

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Лантана Гексаборид (ЛаБ6) Керамический стержень

Lanthanum hexaboride (ЛаБ6) also called lanthanum boride, and LaB6 is an inorganic chemical, a boride of lanthanum. It is a refractory ceramic material with a dark purple appearance that has a melting point of 2210°C, and is insoluble in water and hydrochloric acid. When bombarded with ions, its physical appearance is altered, and it has a green color in place of its usual dark purple color.
The unique properties of lanthanum hexaboride crystals provide stable electron-emitting media with work functions near 2.70 eV. The low work function yields higher currents at lower cathode temperatures than tungsten, which means greater brightness, or current at the beam focus, and longer life. Typically, LaB6 cathodes exhibit 10 times the brightness and 50 times the service life of tungsten cathodes. In electron microscope applications, these characteristics translate to more beam current in a smaller spot at the sample, improved resolution, and less frequent cathode replacement.
Lanthanum Hexaboride Applications：
Thermionic emission (cathode)
Plasma source for plasma-enhanced coating(PECVD)
Vacuum electron beam welding machine
Electron beam surface reforming device
Electron beam lithography device
Transmission electron microscope
Scanning electron microscope
Surface analysis device
Radiotherapy devices
Lanthanum Hexaboride Properties:
Характеристики
Единица измерения
Лантана Гексаборид
Чистота
%
>99.5
Плотность
г / см3
>4.30
Structure
/
Monocrystalline
Твердость по Виккерсу
HV
1065
Shore hardness
HS
HS
Теплопроводность
Вт / мК
15
Electrical Conductivity
S/m
1.83*10^6
Предел прочности при изгибе
МПа
165

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