Phase transformation and layer evolution in molybdenum disilicide-silicon carbide nanolayered coatings

1994 ◽  
Vol 52 ◽  
pp. 538-539
Author(s):  
H. Kung ◽  
T. R. Jervis ◽  
J.-P. Hirvonen ◽  
M. Nastasi ◽  
T. E. Mitchell ◽  
...  
Keyword(s):  
Phase Transformation ◽  
High Temperature ◽  
Oxidation Resistance ◽  
Elevated Temperatures ◽  
Matrix Material ◽  
Molybdenum Disilicide ◽  
High Temperature Strength ◽  
Cross Sectional ◽  
Good Oxidation Resistance ◽  
Structural Applications

MoSi2 is a potential matrix material for high temperature structural composites due to its high melting temperature and good oxidation resistance at elevated temperatures. The two major drawbacksfor structural applications are inadequate high temperature strength and poor low temperature ductility. The search for appropriate composite additions has been the focus of extensive investigations in recent years. The addition of SiC in a nanolayered configuration was shown to exhibit superior oxidation resistance and significant hardness increase through annealing at 500°C. One potential application of MoSi2- SiC multilayers is for high temperature coatings, where structural stability ofthe layering is of major concern. In this study, we have systematically investigated both the evolution of phases and the stability of layers by varying the heat treating conditions.Alternating layers of MoSi2 and SiC were synthesized by DC-magnetron and rf-diode sputtering respectively. Cross-sectional transmission electron microscopy (XTEM) was used to examine three distinct reactions in the specimens when exposed to different annealing conditions: crystallization and phase transformation of MoSi2, crystallization of SiC, and spheroidization of the layer structures.

Tailoring the microstructure of molybdenum disilicide matrix composites with Nb additions

2004 ◽  
Vol 24 (2) ◽  
pp. 363-368 ◽  
Author(s):  
Aidang Shan ◽  
Hitoshi Hashimoto ◽  
Yong-Ho Park
Keyword(s):  
Molybdenum Disilicide ◽  
Matrix Composites ◽  
Nb Additions

ChemInform Abstract: Stability of Molybdenum Disilicide in Combustion Gas Enviroments.

ChemInform ◽  
2010 ◽  
Vol 25 (39) ◽  
pp. no-no
Author(s):  
W. LIN ◽  
J.-Y. HSU ◽  
R. F. SPEYER
Keyword(s):  
Molybdenum Disilicide ◽  
Combustion Gas

Stacking-fault energy and yield stress asymmetry in molybdenum disilicide

2001 ◽  
Vol 81 (5) ◽  
pp. 1079-1097
Author(s):  
T. E. Mitchell, M. I. Baskes, S. P. Ch
Keyword(s):  
Yield Stress ◽  
Molybdenum Disilicide ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Stress Asymmetry

Tri-arc Czochralski growth of single crystal molybdenum disilicide

1996 ◽  
Vol 160 (1-2) ◽  
pp. 66-70 ◽  
Author(s):  
John E. Barnes ◽  
Kevin P. Trumble
Keyword(s):  
Single Crystal ◽  
Molybdenum Disilicide ◽  
Czochralski Growth

Improved both mechanical and anti-oxidation performances of ZrB2-SiC ceramics with molybdenum disilicide addition

2019 ◽  
Vol 223 ◽  
pp. 53-59 ◽  
Author(s):  
Lin Xu ◽  
Yang Yang ◽  
Shuhao Wang ◽  
Meishuan Li ◽  
Jingjun Xu ◽  
...  
Keyword(s):  
Molybdenum Disilicide ◽  
Sic Ceramics

Preparation of Nanocrystalline Molybdenum Disilicide (MoSi2) by a Chlorine-Transfer Reaction

2001 ◽  
Vol 13 (11) ◽  
pp. 3962-3968 ◽  
Author(s):  
Timothy J. Trentler ◽  
R. Suryanarayanan Iyer ◽  
Shankar M. L. Sastry ◽  
William E. Buhro
Keyword(s):  
Transfer Reaction ◽  
Molybdenum Disilicide
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