To prepare a self-lubricating ceramic tool with excellent mechanical properties and crack healing ability, the [email protected]2O3 solid lubricant core-shell structure was prepared by heterogeneous nucleation method, added into Al2O3/TiC matrix together TiB2. Examination of micro-morphology phase composition found that surface h-BN coated Al(OH)3 at first, after calcination 1200 °C, dense unif...

In this paper TiB2-TiC/Ni cermet with various Ni (20, 40 and 60 wt %) content were synthesized by mechanically activated self-propagating synthesis (MASHS) and effect of the addition of Ni on synthesis parameters and microstructure of synthesized samples were investigated. First raw materials (B4C, Ti and Ni) milled in Ar atmosphere. Then milling powders analyzed by XRD. In next step powders sy...

Heterogeneous nucleation is a widespread phenomenon in both nature and technology. However, our current understanding largely confined to the classical theory (CNT) postulated over century ago, which heterogeneous occurs stochastically form spherical cap facilitated by substrate. In this paper, we show that systems with negative lattice misfit completes deterministically within three atomic lay...

The present work explores the processability of an advanced aluminum alloy, namely AlCu-TiB2, by selective laser melting (SLM), and correlation between microstructure mechanical properties as built specimens. principal process parameters emission in pulsed wave (PW) mode, power exposure time, were varied to achieve full density parts starting from prealloyed powders. Detailed analysis defects h...