scholarly journals Investigation of drilling 2D C<sub>f</sub>∕C–SiC composites with brazed diamond core drills

2020 ◽  
Vol 11 (2) ◽  
pp. 349-356
Author(s):  
Qiong Liu ◽  
Guoqin Huang ◽  
Yongchao Xu
Keyword(s):  
Silicon Carbide ◽  
Carbon Fiber ◽  
Feed Speed ◽  
Drilling Force ◽  
Diamond Drill ◽  
Braided Structure ◽  
Sic Composites ◽  
Drilling Conditions ◽  
Better Than

Abstract. Drilling carbon fiber reinforced silicon carbide composites still forms a big challenge for machining because of their special braided structure and anisotropy. In this study, through the drilling of 2D Cf∕C–SiC composites, two kinds of brazed diamond core drills with different abrasive distributions were compared. The results showed that the drilling force and torque of the two drills decreased with the increase in the spindle speed and increased with the increase in the feed speed. Under the same drilling conditions, the drilling force and torque of the brazed diamond drill with the ordered abrasive distribution were far lower than those of the brazed diamond drill with the random abrasive distribution. Also, the quality of the holes drilled by the drill with the ordered abrasive distribution was better than that of the holes drilled by the drill with the random abrasive distribution, which is attributed to the uniform abrasive spacing provided by the drill with the ordered abrasive distribution.

Machining quality of high speed helical milling of carbon fiber reinforced plastics

2021 ◽  
pp. 095440622199673
Author(s):  
Adel Abidi ◽  
Sahbi Ben Salem ◽  
Mohamed Athmane Yallese
Keyword(s):  
Surface Roughness ◽  
Carbon Fiber ◽  
High Speed ◽  
Hole Diameter ◽  
Feed Speed ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Machining Quality ◽  
Fiber Reinforced Plastics

Among advanced cutting methods, High Speed Milling (HSM) is often recommended to improve the productivity and to reduce the costs of machining parts. As every cutting process, HSM is characterized by some defects like surface roughness and delamination are the main defects generated in composite materials. The aim of this experimental work is the studying of the machining quality of woven Carbon fiber reinforced plastics (CFRP) using the HSM technology. Experiments were done using different machining parameters combinations to make opened holes in CFRP laminates. This study investigated the effect of cutting speed, orbital feed speed, hole diameter on the delamination defect and surface roughness responses generated in the drilled holes. The design of experimental tests was generated using the approach of Central Composite Design (CCD). The characterization of these responses was treated with the Analysis of variance (ANOVA) and Response surface methodology (RSM). Results showed that the surface roughness is highly affected by the orbital feed speed (F) with contribution of 22.45%. The delamination factor at entry and exit of holes is strongly influenced by the hole diameter D (25.97% and 57.43%) respectively. The developed model equations gave a good correlation between the empirical and predicted results. The optimization of the milling parameters was treated using desirability function to minimize the surface roughness (Ra) and the delamination factor simultaneously.

Microstructural Characterization of Carbon Fiber-Reinforced Laminated Matrix Composites of Silicon Carbide and Carbon

1998 ◽  
Vol 4 (S2) ◽  
pp. 568-569
Author(s):  
K. A. Appiah ◽  
Z. L. Wang ◽  
W. J. Lackey
Keyword(s):  
Silicon Carbide ◽  
Carbon Fiber ◽  
Microstructural Characterization ◽  
Bulk Sample ◽  
High Temperature Strength ◽  
Matrix Composites ◽  
Fiber Reinforcements ◽  
Diamond Saw ◽  
Sic Composites ◽  
Processing Effort

Silicon carbide composites are known for high-temperature strength retention, creep resistance, high elastic modulus and light weight. Laminated matrix composites (LMC's) with a matrix of alternating layers of silicon carbide (SiC) and carbon (C) with carbon fiber reinforcements possess added toughness in addition to the desirable properties of SiC composites mentioned above. The improved toughness results from both the laminated matrix, which offers a tortuous path to crack propagation, and the energy expended in fiber debonding during fracture. Microstructural analyses of LMC's are necessary to help the processing effort to achieve structures with the desired properties. In this work, a preliminary examination of the microstructure of the laminated matrix composite is undertaken using TEM.Specimens for TEM examination were prepared by cutting slices from a bulk sample of ∼ 1 mm thickness with a low-speed diamond saw. The slices were then ground to no less than 200 μm thickness to prevent the slices from breaking.

C/SiC Composites by Electrophoretical Infiltration

2006 ◽  
Author(s):  
Rosemarie Dittrich ◽  
Eberhard Mu¨ller ◽  
Uta Popp
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Thermal Process ◽  
Sintering Aids ◽  
Technological Parameters ◽  
Fiber Mats ◽  
Sic Composites ◽  
Sic Particle

Due to its high thermodynamical stability carbon fiber reinforced silicon carbide is an interesting material for high temperature applications. Studies are described to find an innovative route for fabricating C/SiC composites by using electrophoresis for infiltrating carbon fiber mats with non-aqueous suspensions of mixtures of silicon carbide powders, stabilizers and sintering aids. The suitability of nano-scaled and submicron powders is discussed. Based on investigations of the interaction between the SiC particle surfaces and the carbon fibers essential technological parameters of the electrophoretic infiltration are defined. The fabrication of C/SiC composites by lamination of single infiltrated fiber mats and a subsequent thermal process is demonstrated.

Microstructure and Mechanical Property of 3D Textile C/SiC Composites Fabricated by Chemical Vapor Infiltration

2006 ◽  
Vol 11-12 ◽  
pp. 81-84 ◽  
Author(s):  
Dong Lin Zhao ◽  
Hong Feng Yin ◽  
Fa Luo ◽  
Wan Cheng Zhou
Keyword(s):  
Mechanical Property ◽  
Silicon Carbide ◽  
Carbon Fiber ◽  
Interfacial Layer ◽  
Chemical Vapor ◽  
Pyrolytic Carbon ◽  
Chemical Vapor Infiltration ◽  
Sic Composites ◽  
Microstructure And Mechanical Property ◽  
Vapor Infiltration

Three dimensional textile carbon fiber reinforced silicon carbide (3D textile C/SiC) composites with pyrolytic carbon interfacial layer were fabricated by chemical vapor infiltration. The microstructure and mechanical property of 3D textile C/SiC composites were investigated. A thin pyrolysis carbon layer (0.2 ± μm) was firstly deposited on the surface of carbon fiber as the interfacial layer with C3H6 at 850°C and 0.1 MPa. Methyltrichlorosilane (CH3SiCl3 or MTS) was used for the deposition of the silicon carbide matrix. The conditions used for SiC deposition were 1100°C, a hydrogen to MTS ratio of 10 and a pressure of 0.1 MPa. The density of the composites was 2.1 g cm-3. The flexural strength of the 3D textile C/SiC composites was 438 MPa. The 3D textile C/SiC composites with pyrolytic carbon interfacial layer exhibit good mechanical properties and a typical failure behavior involving fibers pull-out and brittle fracture of sub-bundle. The real part (ε′) and imaginary part (ε″) of the complex permittivity of the 3D-C/SiC composites are 51.53-52.44 and 41.18-42.08 respectively in the frequency range from 8.2 to 12.4 GHz. The 3D-C/SiC composites would be a good candidate for microwave absorber.

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Cf/SiC Composites

2007 ◽  
Vol 336-338 ◽  
pp. 1291-1293
Author(s):  
Xin Gui Zhou ◽  
Chang Cheng Zhou ◽  
Chang Rui Zhang ◽  
Ying Bin Cao ◽  
Shi Qin Zou
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fracture Toughness ◽  
Silicon Carbide ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Carbon Coatings ◽  
Sic Composites

3D braided carbon fiber reinforced silicon carbide (3D-Cf/SiC) composites were fabricated by precursor infiltration and pyrolysis(PIP), with carbon coatings prepared by chemical vapor deposition (CVD) before PIP. The effect of 1873K heat treatment on the mechanical properties of Cf/SiC composites were investigated. The results showed that heat treatment before PIP can increase the density of composites and lead to excellent properties of Cf/SiC composites. The flexual strength of the Cf/SiC composites with one cycle of 1873 K heat treatment reached 571 MPa, shear strength 51 MPa, and fracture toughness 18 MPa⋅m1/2.

Fabrication and Properties of Cf/SiC Composites Derived from Polysiloxane Precursor

2011 ◽  
Vol 686 ◽  
pp. 419-422
Author(s):  
Tian Heng Xu ◽  
Qing Song Ma ◽  
Zhao Hui Chen
Keyword(s):  
Fracture Toughness ◽  
Silicon Carbide ◽  
Carbon Fiber ◽  
Flexural Strength ◽  
Elemental Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vacuum Atmosphere ◽  
The Matrix ◽  
Sic Composites

Carbon fiber reinforced silicon carbide composites (Cf/SiC) were derived through precursor infiltration pyrolysis route (PIP) at 1600°C in vacuum atmosphere using polysiloxane as precursor. The matrix of Cf/SiC was characterized by X-ray diffraction and elemental analysis. The results show that crystalline β-SiC can be derived at 1600°C in vacuum from polysiloxane. The flexural strength and fracture toughness of polysiloxane derived from Cf/SiC can reach up to 70 MPa and 2.3MPa·m respectively1/2.

Influence of Features of Silicon Carbide Ceramic Matrix Composite (Cp/SiC) on Carbon Content

2012 ◽  
Vol 512-515 ◽  
pp. 1639-1642 ◽  
Author(s):  
You Jun Lu ◽  
Yan Min Wang
Keyword(s):  
Silicon Carbide ◽  
Carbon Particle ◽  
Ceramic Matrix Composite ◽  
Mechanochemical Method ◽  
Resistant Material ◽  
Silicon Carbide Ceramic ◽  
Sic Ceramic ◽  
Sic Composites ◽  
Fire Resistant Material ◽  
Better Than

In this article, the properties of carbon particle modified silicon carbide (Cp/SiC) composites was studied. The mixture powder of nano carbon black and submicro-SiC was prepared through soft mechanochemical method. Then Cp/SiC composites was pressureless sintered.The result shows that appropriate content of carbon is 25 percent in this condition the machinability of Cp/SiC is better than that of SiC ceramic. At the same time, the oxidation resistence, wear resistence, and flexure strength of Cp/SiC meet the challenge for special fire resistant material.

The Machinability of 3D-C/SiC Composites

2011 ◽  
Vol 484 ◽  
pp. 36-40 ◽  
Author(s):  
Ping He ◽  
Shao Ming Dong ◽  
X.Y. Zhang ◽  
Yu Sheng Ding ◽  
Lian Gao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Carbon Fiber ◽  
Thermal Structure ◽  
Woven Fabric ◽  
Three Dimension ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Sic Composites

Carbon fiber reinforced silicon carbide (C/SiC) composites are considered as one of the most potential thermal structure materials. However, the non-machinability of the three dimension woven fabric restrict the wide application of the c/sic composites. In this paper, we discuss the effect of machinability on the properties of 3D-c/sic composites, such as the modulus, mechanical properties, and so on. The results show that c/sic composites exhibit excellent mechanical properties after machinability, an extensive microstructure study is also carried out to understand the properties of the composites.

scholarly journals Joining of Cf/SiC Ceramic Matrix Composites: A Review

2018 ◽  
Vol 2018 ◽  
pp. 1-15
Author(s):  
Keqiang Zhang ◽  
Lu Zhang ◽  
Rujie He ◽  
Kaiyu Wang ◽  
Kai Wei ◽  
...  
Keyword(s):  
Systematic Review ◽  
Silicon Carbide ◽  
Carbon Fiber ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Engineering Applications ◽  
Sic Ceramic ◽  
Sic Composites

Carbon fiber-reinforced silicon carbide (Cf/SiC) ceramic matrix composites have promising engineering applications in many fields, and they are usually geometrically complex in shape and always need to join with other materials to form a certain engineering part. Up to date, various joining technologies of Cf/SiC composites are reported, including the joining of Cf/SiC-Cf/SiC and Cf/SiC-metal. In this paper, a systematic review of the joining of Cf/SiC composites is conducted, and the aim of this paper is to provide some reference for researchers working on this field.

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