Rare-earth phosphates (REPO4) are regarded as one of the promising thermal/environmental barrier coating (T/EBC) materials for SiCf/SiC ceramic matrix composites (SiC-CMCs) owing to their excellent resistance water vapor and CaO–MgO–Al2O3–SiO2 (CMAS). Nevertheless, a relatively high thermal conductivity (?) REPO4 becomes b...

Psychophysical two-tone suppression and the growth of the (2f• --f2} and • --f•) distortion products were measured in four normal-hearing young adults using a forward-masking paradigm. The stimulus parameters investigated were: (1)f• = 750 and 3000 Hz; (2)f2/f• = 1.1 l, 1.26, and 1.41; (3) L• = 50, 65, 80, and 90 dB SPL; and (4) L2 -L• varied from -20 to + 20 dB in 10-dB increments. It appears ...

Superconductivity has been realized in films of La$_{1-x}$Sr$_x$NiO$_2$. Here we report synthesis and characterization polycrystalline samples La$_{1-x}$Sr$_x$NiO$_3$ La$_{1-x}$Sr$_x$NiO$_2$ ($0\le x\le 0.2$). Magnetization resistivity measurements reveal that are paramagnetic metals exhibit insulating behavior. is not detected bulk The absence superconductivity may be due to the generation hyd...

Abstract Alumina ( α - and γ -Al 2 O 3 ) particles are formed in liquid Al-Mg alloys during the dealing cast processes. These native oxide have non-trivial influences on microstructures properties of solidified parts, may act as potential heterogenous nucleation sites solidification. At present there is still a lack understanding about interaction atomic arrangements at interfaces between liqui...