Gel Casting and Properties of SiCp/Al Composite

2016 ◽  
Vol 697 ◽  
pp. 551-554
Author(s):  
Hai Lin Liu ◽  
Xiao Ting Huang ◽  
Yan Li Huo ◽  
Chuan Qi Hu ◽  
Chun Peng Wang ◽  
...  

In this paper, high volume fraction SiCp/Al composite was fabricated by pressureless technique with silicon carbide porous preform which fabricated through gel casting process. The effects of solid loading on the rheological properties of SiC slurry were discussed. High solid loading SiC slurry of 65vol% with low viscosity and high stability was fabricated. Also microstructure, flexural strength of the SiC preform and SiCp/Al composite were studied, the results showed gel casting process and pressureless infiltration technique were suitable for fabricating high volume fraction, homogeneous structure and high performance SiCp/Al composite.

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Xu Zhao ◽  
Yadong Gong ◽  
Guiqiang Liang ◽  
Ming Cai ◽  
Bing Han

AbstractThe existing research on SiCp/Al composite machining mainly focuses on the machining parameters or surface morphology. However, the surface quality of SiCp/Al composites with a high volume fraction has not been extensively studied. In this study, 32 SiCp/Al specimens with a high volume fraction were prepared and their machining parameters measured. The surface quality of the specimens was then tested and the effect of the grinding parameters on the surface quality was analyzed. The grinding quality of the composite specimens was comprehensively analyzed taking the grinding force, friction coefficient, and roughness parameters as the evaluation standards. The best grinding parameters were obtained by analyzing the surface morphology. The results show that, a higher spindle speed should be chosen to obtain a better surface quality. The final surface quality is related to the friction coefficient, surface roughness, and fragmentation degree as well as the quantity and distribution of the defects. Lower feeding amount, lower grinding depth and appropriately higher spindle speed should be chosen to obtain better surface quality. Lower feeding amount, higher grinding depth and spindle speed should be chosen to balance grind efficiently and surface quality. This study proposes a systematic evaluation method, which can be used to guide the machining of SiCp/Al composites with a high volume fraction.


2001 ◽  
Vol 7 (3) ◽  
pp. 213-220 ◽  
Author(s):  
Byung-Geol Kim ◽  
Shang-Li Dong ◽  
Ick-Jun Kim

1995 ◽  
Vol 10 (10) ◽  
pp. 2415-2417 ◽  
Author(s):  
X.F. Yang ◽  
X.M. Xi

A rapid, pressureless infiltration technique for fabricating SiC-reinforced Al-Si composites is described. The infiltration can be performed by simply dipping a ceramic preform into a molten alloy in an open air environment. This method makes it possible to produce composites that contain a high volume fraction (80%) of a variety of ceramic reinforcements, including particulates and fibers. This technique has potential for low-cost and versatile production of SiC-Al-Si composites for many industrial applications, such as automobile components and electronic packaging.


2012 ◽  
Vol 565 ◽  
pp. 142-147 ◽  
Author(s):  
Z.G. Dong ◽  
F.J. Ma ◽  
Ren Ke Kang ◽  
K. Su

The surface integrity of the machined components of the high volume fraction SiC particle reinforced Al composites (SiCp/Al) is important as it influences the performance of the part. The grinding experiments of 55% volume fraction SiC particles reinforced Al composite with and without ultrasonic-assisted were performed. The grinding forces were tested, on which the effects of the grinding parameters were analyzed. The surface topography of SiCp/Al after ultrasonic assisted grinding were observed, based on which the material removal mode was discussed.


Procedia CIRP ◽  
2021 ◽  
Vol 99 ◽  
pp. 414-419
Author(s):  
Chuanmin Zhu ◽  
Yinyue Wu ◽  
Peng Gu ◽  
Zhan Tao ◽  
YiQing Yu

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