Tantalum nitride

English alias: Tantalum mononitride; nitridotantalum; nitrogen (-3) anion; tantalum (+5) cation

CAS number: 12033-62-4

EINECS No. 234-788-4

Molecular formula: N5Ta3

Molecular weight: 194.95

  • Description
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Tantalum nitride is a hexagonal gray crystal. Relative density 13.4; melting point 3090 鈩; thermal conductivity 9.54W / (m 路 K), resistivity 128渭惟 路 cm, microhardness 3200kg / mm2, transformation point temperature 17.8K. Do not dissolve in water, acid, slightly soluble in aqua regia, soluble in potassium hydroxide and decomposition to release ammonia. Heated to 2000 鈩 to release nitrogen. Materials used to make accurate sheet resistance, tantalum nitride resistance is resistant to water vapor erosion. Used as a superhard material additive for spraying, increasing transformer, integrated circuit, diode’s electrical stability.

Particle size Purity (%) Specific area

( m2/g )

Bulk density

( g/cm3 )

Theoretical density

( g/cm3 )


content( % )

1.0鈥3.0um 锛99.5 15 7.82 9.14 鈮6.8
-325mesh 锛99.5 10 8.55 9.14 鈮6.8


1, Water is usually not harmful, if there is no government permission, do not discharge material into the surrounding environment.

2, stable at room temperature and pressure to avoid the material oxide.

3, sealed at room temperature, cool, ventilated and dry place

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