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Tungsten nitride
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<p>Tungsten nitride (W2N, WN, WN2) is an inorganic compound, a <a href="/facts/Nitride/9vkrCbJ4">nitride</a> of <a href="/facts/Tungsten/WYwbNDYX">tungsten</a>. It is a hard, solid, brown-colored <a href="/facts/Ceramic/9JKudpqX">ceramic</a> material that is electrically conductive and decomposes in water. </p><p>It is used in <a href="/facts/Microelectronics/HzCusb86">microelectronics</a> as a <a href="/facts/Wire_bonding/e0qvKlGv">contact material</a>, for conductive layers, and <a href="/facts/Barrier_layer/fqlG74DA">barrier layers</a> between <a href="/facts/Silicon/cgWx0hdr">silicon</a> and other metals, e.g. <a href="/facts/Tungsten/WYwbNDYX">tungsten</a> or <a href="/facts/Copper/I8PEE8oX">copper</a>. It is less commonly used than <a href="/facts/Titanium_nitride/vxbbBgNz">titanium nitride</a> or <a href="/facts/Tungsten/WYwbNDYX">tungsten</a> films. </p><p>Tungsten nitride forms together with <a href="/facts/Tungsten_dioxide/FNR99LTH">tungsten dioxide</a>, <a href="/facts/Tungsten_trioxide/u4ve1Kvt">tungsten trioxide</a>, and <a href="/facts/Tungsten_pentoxide/juxoM4MA">tungsten pentoxide</a> when an <a href="/facts/Incandescent_light_bulb/31frjg0A">incandescent light bulb</a> breaks while the filament is heated. </p><p><a href="/facts/Tungsten_silicide/9hMEyycI">Tungsten silicide</a> is another material with similar use. </p>