Tungsten cladding of new carbon composite with AlN ceramics

A new carbon composite called ceramic bonded carbon (CBC) is composed of separated carbon particles bonded with thin ceramic boundaries. To fabricate reliable plasma facing components, AlN ceramic bonded carbon (AlN/CBC, 20 vol.% AlN) was directly cladded with tungsten (W) at 1700 °C by spark plasma sintering. The cladding shows strong bonding, which is attributed to the formation of interface layer containing mixed WC/W2C and AlN ceramic. The interface between W and AlN/CBC was analyzed and the cladding mechanism was discussed.