Mechanical Properties of MgAl2O4 Single Crystal Fibers

TL and OSL studies of carbon doped magnesium aluminate (MgAl2O4:C)

“…The MgAl 2 O 4 is one of such material which has considerable radiation resistance (Yoshimura et al, 2006), chemical inertness, high melting point and good mechanical strength. These properties have made to realize the utility of MgAl 2 O 4 as an optical and insulating material in the radiation field (Sheehan et al, 1993;Baudim wet al, 1995;Tripathi et al, 2003;Paris et al, 2009;Deepak et al, 2007;Kinoshita et al, 1995). In MgAl 2 O 4, cation antisite defects were produced by Al 3+ and Mg 2+ inversion (Gritsyna et al, 2006 ).…”

Creep of directionally solidified alumina/YAG eutectic monofilaments

“…Additionally, YAG has a large unit cell, which makes dislocation generation and mobility difficult. General Electric Inc. and MSNW Inc. showed very good creep behavior for several orientations of single crystal YAG up to 1700 • C. [17][18][19][20][21] Unfortunately, they also showed that single crystal fibers are limited by a low fracture toughness (K c ) and strength degradation at moderate temperatures caused by flaws that undergo slow crack growth. [22][23][24][25][26][27][28][29][30][31][32] In hopes of overcoming the shortcomings of both polycrystalline and single crystal fibers, two-phase single crystals structures (Directionally Solidified Eutectics [DSE]) have been explored because they should provide better strength, creep resistance, and toughness.…”

“…[14][15][16][17][18][19][20][21][22][23][24][25][26] Most single crystal work * Corresponding author. Tel.…”