Fabrication of Ti2AlN by Mechanical Alloying and Hot Press Sintering

The dense layered ternary Ti(2)AlN ceramics were successfully synthesized by a combination of mechanical alloying and hot press sintering from the mixture of Ti and Al in nitrogen milling atmosphere. The phase transformation and morphology characteristics in mechanical alloying and subsequently hot press sintering were studied by using XRD and SEM as well as EDS. The results show that Ti(Al,N) amorphous powders were synthesized successfully by mechanical alloying. When the as milled powders were hot pressed at 1200 degrees C for 1 h, full dense and highly pure layered ternary Ti(2)AlN ceramic was synthesized.