Processing‐Related Fracture Origins: II, Agglomerate Motion and Cracklike Internal Surfaces Caused by Differential Sintering

摘要: Effects of differential sintering kinetics due to green density were studied by fabricating agglomerate-powder matrix specimens from two Al2O3/ZrO2 (30 vol%) powders and subjecting them a cyclic schedule allow intermittent observations. Low-green-density compacts sintered faster than high-density compacts, although high-green-density reached end-point densities first. Specimens containing low-green-density agglomerates produced circumferential cracklike voids at the agglomerate/matrix interface. Agglomerates with higher subjected compressive strains produce agglomerate motion when resulting stress field was non-symmetric. Such also variety separations. Implications regarding are discussed. strength bodies obvious, viz. can be proportional square root size.