Wikipedia

Tungsten nitride

Tungsten nitride (W2N, WN, WN2) is an inorganic compound, a nitride of tungsten. It is a hard, solid, brown-colored ceramic material that is electrically conductive and decomposes in water.

It is used in microelectronics as a contact material, for conductive layers, and barrier layers between silicon and other metals, e.g. tungsten or copper. It is less commonly used than titanium nitride or tungsten films.

Tungsten nitride forms together with tungsten dioxide, tungsten trioxide, and tungsten pentoxide when a light bulb breaks while the filament is heated.

Tungsten silicide is another material with similar use.

Salts and covalent derivatives of the nitride ion
NH3
N2H4 		He(N2)11
Li3N Be3N2 BN β-C3N4
g-C3N4
CxNy 		N2 NxOy NF3 Ne
Na3N Mg3N2 AlN Si3N4 PN
P3N5 		SxNy
SN
S4N4 		NCl3 Ar
K Ca3N2 ScN TiN VN CrN
Cr2N 		MnxNy FexNy CoN Ni3N CuN Zn3N2 GaN Ge3N4 As Se NBr3 Kr
Rb Sr3N2 YN ZrN NbN β-Mo2N Tc Ru Rh PdN Ag3N CdN InN Sn Sb Te NI3 Xe
Cs Ba3N2 Hf3N4 TaN WN Re Os Ir Pt Au Hg3N2 TlN Pb BiN Po At Rn
Fr Ra3N2 Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
↓
La CeN Pr Nd Pm Sm Eu GdN Tb Dy Ho Er Tm Yb Lu
Ac Th Pa UN Np Pu Am Cm Bk Cf Es Fm Md No Lr
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