SiC–Al–Si composites by rapid pressureless infiltration in air

1995 ◽  
Vol 10 (10) ◽  
pp. 2415-2417 ◽  
Author(s):  
X.F. Yang ◽  
X.M. Xi
Keyword(s):  
Volume Fraction ◽  
Low Cost ◽  
High Volume ◽  
Industrial Applications ◽  
High Volume Fraction ◽  
Molten Alloy ◽  
Pressureless Infiltration ◽  
Ceramic Preform ◽  
Infiltration Technique ◽  
Automobile Components

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.

A Study on the SiC/Al Composites Fabricated by Pressureless Infiltration

2008 ◽  
Vol 569 ◽  
pp. 189-192
Author(s):  
Ke Zheng Sang ◽  
Chun Feng Wan
Keyword(s):  
Particle Size ◽  
Volume Fraction ◽  
High Volume ◽  
High Volume Fraction ◽  
Pressureless Infiltration ◽  
Green Body ◽  
Sic Particles

SiC/Al composites with high volume fraction of SiC were prepared at 1150°C by pressureless infiltration. The volume fraction of SiC was increased by decreasing the amount of starch in the green body. Both the microstructure and the strength of the composites were investigated. The results showed that the strength decreased with the increasing of the particle size and volume fraction of SiC. It was suggested that the interface between the SiC particles, which were not sintered, make of the defects in the composites. The defects led to the decreasing of the strength with increasing of the volume fraction of SiC.

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 ◽  
...  
Keyword(s):  
High Performance ◽  
Volume Fraction ◽  
Casting Process ◽  
High Volume ◽  
High Volume Fraction ◽  
Solid Loading ◽  
Low Viscosity ◽  
Gel Casting ◽  
Al Composite ◽  
Infiltration Technique

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.

Analysis of porosity in high volume fraction SiCp/Al composites fabricated by pressureless infiltration

2015 ◽  
Vol 19 (sup9) ◽  
pp. S9-116-S9-122
Author(s):  
Y. Cui ◽  
S. M. Gan ◽  
F. B. Liu ◽  
B. S. Wu ◽  
Y. Yang
Keyword(s):  
Volume Fraction ◽  
High Volume ◽  
High Volume Fraction ◽  
Pressureless Infiltration

Dry sliding wear properties of high volume fraction SiCp/Cu composites produced by pressureless infiltration

Wear ◽  
2008 ◽  
Vol 265 (11-12) ◽  
pp. 1848-1856 ◽  
Author(s):  
L. Zhang ◽  
X.B. He ◽  
X.H. Qu ◽  
B.H. Duan ◽  
X. Lu ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Volume Fraction ◽  
High Volume ◽  
High Volume Fraction ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Pressureless Infiltration ◽  
Wear Properties

scholarly journals Face Grinding Surface Quality of High Volume Fraction SiCp/Al Composite Materials

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Xu Zhao ◽  
Yadong Gong ◽  
Guiqiang Liang ◽  
Ming Cai ◽  
Bing Han
Keyword(s):  
Friction Coefficient ◽  
Surface Morphology ◽  
Surface Quality ◽  
Volume Fraction ◽  
High Volume ◽  
Spindle Speed ◽  
High Volume Fraction ◽  
Machining Parameters ◽  
Al Composite

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.

scholarly journals Study on the High-Speed Milling Performance of High-Volume Fraction SiCp/Al Composites

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4143
Author(s):  
Youzheng Cui ◽  
Shenrou Gao ◽  
Fengjuan Wang ◽  
Qingming Hu ◽  
Cheng Xu ◽  
...  
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Volume Fraction ◽  
Simulation Analysis ◽  
Cutting Temperature ◽  
High Volume ◽  
Cutting Parameters ◽  
High Volume Fraction ◽  
High Wear Resistance ◽  
Element Analysis

Compared with other materials, high-volume fraction aluminum-based silicon carbide composites (hereinafter referred to as SiCp/Al) have many advantages, including high strength, small change in the expansion coefficient due to temperature, high wear resistance, high corrosion resistance, high fatigue resistance, low density, good dimensional stability, and thermal conductivity. SiCp/Al composites have been widely used in aerospace, ordnance, transportation service, precision instruments, and in many other fields. In this study, the ABAQUS/explicit large-scale finite element analysis platform was used to simulate the milling process of SiCp/Al composites. By changing the parameters of the tool angle, milling depth, and milling speed, the influence of these parameters on the cutting force, cutting temperature, cutting stress, and cutting chips was studied. Optimization of the parameters was based on the above change rules to obtain the best processing combination of parameters. Then, the causes of surface machining defects, such as deep pits, shallow pits, and bulges, were simulated and discussed. Finally, the best cutting parameters obtained through simulation analysis was the tool rake angle γ0 = 5°, tool clearance angle α0 = 5°, corner radius r = 0.4 mm, milling depth ap = 50 mm, and milling speed vc= 300 m/min. The optimal combination of milling parameters provides a theoretical basis for subsequent cutting.

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