Magnetic Submicron Mullite Coatings with Oriented SiC Whiskers

2018 ◽  
Vol 10 (14) ◽  
pp. 11907-11919
Author(s):  
Zhaoxi Chen ◽  
James Townsend ◽  
Pavel Aprelev ◽  
Yu Gu ◽  
Ruslan Burtovyy ◽  
...  
Keyword(s):  
Sic Whiskers ◽  
Mullite Coatings

HREM interface studies in SiC-whisker-reinforced Al2O3 and Si3N4 ceramics

1988 ◽  
Vol 46 ◽  
pp. 734-735
Author(s):  
W. Braue ◽  
R.W. Carpenter ◽  
D.J. Smith
Keyword(s):  
Analytical Data ◽  
Base Material ◽  
High Strength ◽  
Ceramic Composites ◽  
Good Thermal Stability ◽  
All Ceramic ◽  
Sic Whiskers ◽  
Base Composite ◽  
C 30 ◽  
Si3n4 Ceramics

Whisker and fiber reinforcement has been established as an effective toughening concept for monolithic structural ceramics to overcome limited fracture toughness and brittleness. SiC whiskers in particular combine both high strength and elastic moduli with good thermal stability and are compatible with most oxide and nonoxide matrices. As the major toughening mechanisms - crack branching, deflection and bridging - in SiC whiskenreinforced Al2O3 and Si3N41 are critically dependent on interface properties, a detailed TEM investigation was conducted on whisker/matrix interfaces in these all-ceramic- composites.In this study we present HREM images obtained at 400 kV from β-SiC/α-Al2O3 and β-SiC/β-Si3N4 interfaces, as well as preliminary analytical data. The Al2O3- base composite was hotpressed at 1830 °C/60 MPa in vacuum and the Si3N4-base material at 1725 °C/30 MPa in argon atmosphere, respectively, adding a total of 6 vt.% (Y2O3 + Al2O3) to the latter to promote densification.

Low-pressure chemical vapour deposition of mullite coatings in a cold-wall reactor

1999 ◽  
Vol 09 (PR8) ◽  
pp. Pr8-395-Pr8-402 ◽  
Author(s):  
B. Armas ◽  
M. de Icaza Herrera ◽  
C. Combescure ◽  
F. Sibieude ◽  
D. Thenegal
Keyword(s):  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Low Pressure ◽  
Cold Wall ◽  
Pressure Chemical ◽  
Mullite Coatings

scholarly journals Synergistic strengthening mechanism of copper matrix composite reinforced with nano-Al2O3 particles and micro-SiC whiskers

2021 ◽  
Vol 10 (1) ◽  
pp. 62-72
Author(s):  
Huanran Lin ◽  
Xiuhua Guo ◽  
Kexing Song ◽  
Jiang Feng ◽  
Shaolin Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Erosion Resistance ◽  
Strengthening Mechanism ◽  
Copper Matrix ◽  
Heavy Duty ◽  
Arc Erosion ◽  
Comprehensive Performance ◽  
Sic Whiskers ◽  
Copper Matrix Composite ◽  
Time And Energy

Abstract Although Cu–Al2O3 composites have good comprehensive performance, higher mechanical properties and arc erosion resistance are still required to meet heavy-duty applications such as electromagnetic railguns. In this work, a novel hybrid SiCw/Cu–Al2O3 composite was successfully prepared by combining powder metallurgy and internal oxidation. The microstructure and mechanical behavior of the SiCw/Cu–Al2O3 composite were studied. The results show that nano-Al2O3 particles and micro-SiCw are introduced into the copper matrix simultaneously. Well-bonded interfaces between copper matrix and Al2O3 particles or SiCw are obtained with improved mechanical and arc erosion resistance of SiCw/Cu–Al2O3 composite. The ultimate tensile strength of the SiCw/Cu–Al2O3 composite is 508.9 MPa, which is 7.9 and 56.1% higher than that of the Cu–Al2O3 composite and SiCw/Cu composite, respectively. The strengthening mechanism calculation shows that Orowan strengthening is the main strengthening mechanism of the SiCw/Cu–Al2O3 composite. Compared with Cu–Al2O3 composite, the hybrid SiCw/Cu–Al2O3 composite has lower arc time and energy and better arc stability.

Decomposition of Trichloroethylene by Microwave‐Induced Plasma Generated from SiC Whiskers

1998 ◽  
Vol 145 (1) ◽  
pp. 229-235 ◽  
Author(s):  
Makoto Egashira ◽  
Yasuhiro Shimizu ◽  
Yuji Takao ◽  
Masaki Ono ◽  
Seiichi Sasada
Keyword(s):  
Microwave Induced Plasma ◽  
Sic Whiskers

Temperature effects on the tribological behavior of alumina reinforced with unidirectionally oriented SiC whiskers

Wear ◽  
2001 ◽  
Vol 251 (1-12) ◽  
pp. 1452-1458 ◽  
Author(s):  
D.-S Lim ◽  
D.-S Park ◽  
B.-D Han ◽  
T.-S Kan ◽  
Ho Jang
Keyword(s):  
Temperature Effects ◽  
Tribological Behavior ◽  
Sic Whiskers

Nitridation of Silicon Containing MgO and CeO2 Powders and SiC Whiskers

1992 ◽  
Vol 75 (6) ◽  
pp. 1662-1665 ◽  
Author(s):  
Jow-Lay Huang ◽  
Frederick E. Simms
Keyword(s):  
Sic Whiskers

Effect of SiC whiskers on the mechanical and ablation performances of Cu modified C/C composite

2021 ◽  
Author(s):  
Pei Wang ◽  
Fengchun Wei ◽  
Hongbo Zhang ◽  
Jian Yin ◽  
Zhenhua Hao ◽  
...  
Keyword(s):  
Sic Whiskers

Formation of SiC whiskers from silicon nitride

1992 ◽  
Vol 27 (10) ◽  
pp. 2726-2730 ◽  
Author(s):  
R. V. Krishna Rao ◽  
M. M. Godkhindi
Keyword(s):  
Silicon Nitride ◽  
Sic Whiskers
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