... powders produced by Selfpropagating High-temperature Synthesis.Main products include AlN,TiC, TiCN, TiB2, BN, SiC, Si3N4, Sialon, Cr3C2, MoSi2, ... its thermal expansion is similar closes to that of Si. AlN is widely used in such area: Circuit substrates of ... Fe(wt%) Cr(wt%) Ni(wt%) K(wt%) Na(wt%)AlN -12 >32.5 <1 <0.05 <0.005 <0. ... more than 600 tons of tungsten and molybdenum products. AlN Powder