Effect of carbon content on the microstructure and properties of silicon carbide-based sinters

2001 ◽  
Vol 46 (2-3) ◽  
pp. 245-249 ◽  
Author(s):  
Marian Rączka ◽  
Gabriela Górny ◽  
Ludosław Stobierski ◽  
Krzysztof Rożniatowski
Keyword(s):  
Silicon Carbide ◽  
Carbon Content ◽  
Microstructure And Properties

Influence of Carbon Content on Ceramic Injection Molding of Reaction-Bonded Silicon Carbide

2016 ◽  
Vol 13 (5) ◽  
pp. 838-843 ◽  
Author(s):  
Zhao Zhang ◽  
Yujun Zhang ◽  
Hongyu Gong ◽  
Xue Guo ◽  
Yubai Zhang ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Injection Molding ◽  
Carbon Content ◽  
Ceramic Injection Molding

Wide Bandgap Fluorinated Silicon-Carbide-Nitride Films Using NF3

1991 ◽  
Vol 219 ◽  
Author(s):  
H. C. Goh ◽  
S. M. Tan ◽  
H. A. Naseem ◽  
S. S. Ang ◽  
W. D. Brown
Keyword(s):  
Silicon Carbide ◽  
Refractive Index ◽  
Carbon Content ◽  
Power Density ◽  
Deposition Rate ◽  
Gas Flow ◽  
Substantial Reduction ◽  
Wide Bandgap ◽  
Amorphous Hydrogenated Silicon ◽  
Stainless Steel Reactor

ABSTRACTAmorphous hydrogenated silicon carbide has been studied extensively because of its properties as a wide bandgap material. However, a large amount of methane is needed to deposit the material. Also, the high carbon content of these films poses some problems. The addition of NF3 to the gas stream results in wide bandgap films with a substantial reduction in the required CH4 flow for deposition. Amorphous SiCx Ny :H:F films were prepared using rf glow discharge decomposition of silane, methane, and nitrogen trifluoride in a parallel-plate stainless steel reactor. Gas flow rate and power density were varied. For a gas mixture containing 6% NF3 and 78% CH4, FTIR measurements reveal a reduction in C-H peak heights at 2960 cm-1 and 2880 cm-1 with respect to the Si-H peak at 2080 cm-1 indicating a smaller carbon content in the film. The C-H peaks shift to higher wavenumbers with increasing NF3. The use of NF3 increases the bandgap from 2.6 to 3.14 eV while reducing the refractive index from 2.12. to 1.87. A maximum deposition rate of 625 A/min was achieved. This should be compared to the very low deposition rate of 18 A/min for comparable bandgap Si-C films deposited using 97% methane in silane. Increasing the deposition power density resulted in a larger bandgap and a smaller refractive index.

Study on the Microstructure and Properties of Prehardened Plastic-Mould SWFT Steel for Big Section

2007 ◽  
Vol 353-358 ◽  
pp. 1629-1632 ◽  
Author(s):  
Yi Luo ◽  
Xiao Chun Wu ◽  
Hong Bin Wang ◽  
Yong An Min
Keyword(s):  
Carbon Content ◽  
Comparative Experiment ◽  
Large Section ◽  
Microstructure And Properties ◽  
The Stability ◽  
Quenching And Tempering ◽  
Plastic Mould

In order to develop the prehardened plastic-mould SWFT steel for big section without quenching and tempering, the influence of carbon on the microstructure and corresponding hardness of steel under both air and sand cooling were investigated. It was demonstrated that when the carbon content of steels increased, the stability of overcooling austenite increased and the hardness difference decreased because of the decrease of bulk ferrite and the increase of bainite. The microstructure of No.8 steel under both air and sand cooling was mostly bainite and the hardness difference was less than 3HRC.And the No.8 steel had good machineability by the turning comparative experiment of No.8 steel and 45# steel. The prehardened plastic mould SWFT steel for big large section was produced successfully based on the experiment result.

Densification, Microstructure and Properties of Liquid-Phase Sintered Silicon Carbide

2004 ◽  
Vol 264-268 ◽  
pp. 957-960 ◽  
Author(s):  
A. Vorster ◽  
David S. McLachlan ◽  
G. Sauti ◽  
Mathias Herrmann
Keyword(s):  
Silicon Carbide ◽  
Liquid Phase ◽  
Microstructure And Properties ◽  
Sintered Silicon

scholarly journals Effect of Carbon Content and Elements Mo and V on the Microstructure and Properties of Stainless Steel Powder Surfacing Layer

Coatings ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 371
Author(s):  
Taixu Xu ◽  
Chongyi Wei ◽  
Xiao Han ◽  
Jihui Liu ◽  
Zhijun He ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Impact Toughness ◽  
Carbon Content ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Low Grade ◽  
Microstructure And Properties ◽  
The Impact

This study evaluated the effect of an increase in carbon content and the presence of the elements Mo and V on the microstructure and properties of the surfacing layer of stainless steel powder for knives and scissors production. Various types of high-quality stainless steel powder (5Cr13, 8Cr13, and 8Cr13MoV) were deposited on the surface of low-grade stainless steel used to produce knives and scissors (2Cr13). The microstructure, comprehensive hardness, wear resistance, impact toughness, and corrosion resistance of the stainless steel powder surfacing layers were tested and analyzed. Results indicate that the increase in carbon content and the presence of Mo and V improve the comprehensive hardness and wear resistance of the stainless steel powder surfacing layer, and both exert the superposition effect. However, the increase in carbon content and the presence of Mo and V slightly influence the impact toughness of the surfacing layer. In addition, the increase in carbon content significantly reduces the corrosion resistance of the surfacing layer. This adverse effect is reduced when Mo and V exist. Other advantages of the presence of Mo and V in the stainless steel powder surfacing layer include the refinement of grain size, reduction of carbide particle size, and improvement of the metallurgical bonding of the surfacing layer and the matrix.

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