TiAl and TiAlN coatings were deposited on cemented carbide with commercial Ti50Al50 alloy target by magnetron sputtering technology. The existing forms of Ti and Al elements were studied by scanning electron microscopy( SEM) and X-ray diffraction( XRD),the adhesive strength and hardness were measured by nano indentation and adhesion testing. The results showed that Ti and Al dual-phase existed in TiAl target,and Ti grains were embedded into the Al matrix; single-phase Ti and binary-phase Ti3Al alloy were fo...