Enhanced Tribological, Corrosion, and Microstructural Properties of an Ultrathin (<2 nm) Silicon Nitride/Carbon Bilayer Overcoat for High Density Magnetic Storage

2014 ◽  
Vol 6 (12) ◽  
pp. 9376-9385 ◽  
Author(s):  
Reuben J. Yeo ◽  
Neeraj Dwivedi ◽  
Ehsan Rismani ◽  
Nalam Satyanarayana ◽  
Shreya Kundu ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
High Density ◽  
Magnetic Storage ◽  
Microstructural Properties

Reliability of silicon nitride gate dielectrics grown at 400 °C formed by microwave-excited high-density plasma

2003 ◽  
Vol 216 (1-4) ◽  
pp. 246-251 ◽  
Author(s):  
Ichiro Ohshima ◽  
Weitao Cheng ◽  
Yasuhiro Ono ◽  
Masaaki Higuchi ◽  
Masaki Hirayama ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Gate Dielectrics ◽  
High Density ◽  
Density Plasma

scholarly journals Influence of the substitution of Y2O3 for CeO2 on the mechanical and microstructural properties of silicon nitride

Cerâmica ◽  
2005 ◽  
Vol 51 (319) ◽  
pp. 285-288
Author(s):  
J. V. C. de Souza ◽  
C. A. Kelly ◽  
M. R. V. Moreira ◽  
M. V. Ribeiro ◽  
C. dos Santos ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Cost Reduction ◽  
Nitrogen Atmosphere ◽  
Microstructural Properties ◽  
X Ray Diffraction ◽  
Powder Mixtures ◽  
X Ray ◽  
Nitride Ceramics ◽  
Mechanical And Microstructural Properties ◽  
Sintered Silicon

This work investigated the substitution of Y2O3 for CeO2 in liquid-phase sintered silicon nitride ceramics. Cost reduction as well as good physical, mechanical and microstructural properties are the main objectives of the present study. Two powder mixtures were prepared, varying the contents of alpha-Si3N4, Al2O3, AlN, Y2O3 and CeO2. The mixtures were homogenized in ethanol, dried in a rotating evaporator and kiln, respectively, and then uniaxially (100 MPa) and cold isostatically pressed (300 MPa). The samples were sintered at 1850ºC for 1 h in a graphite resistive furnace under nitrogen atmosphere. After sintering the density of the samples was higher than 97% of the theoretical value. The fracture toughness and hardness were higher than 5.28 MPa.m½ and 17.12 GPa, respectively. Phase analysis by X-ray diffraction and scanning electron microscopy revealed the presence of alpha-SiAlON and beta-Si3N4.

Sign in / Sign up

Export Citation Format

Share Document