Al Ion Implantation of SiC Coated Carbon Fiber-Reinforced SiC Matrix Composites by Metal Vapor Vacuum Arc Ion Source

2011 ◽  
Vol 415-417 ◽  
pp. 76-79
Author(s):  
Guo Jia Ma ◽  
Guo Qiang Lin ◽  
Hong Chen Wu
Keyword(s):  
Carbon Fiber ◽  
Ion Implantation ◽  
Metal Vapor ◽  
Ion Source ◽  
Vacuum Arc ◽  
Fiber Reinforced ◽  
Aluminum Ions ◽  
Carbon Fiber Reinforced ◽  
Sic Composites ◽  
Coated Carbon

SiC coated carbon fiber-reinforced SiC matrix (C/SiC) composites were implanted with aluminum ions by metal vapor vacuum arc ion source to improve their oxidation resistance. Depth profile of the aluminum ions in the SiC coated C/SiC composites was checked by Auger electronic energy spectrum. Oxidation tests were performed in flowing dry air at 1300°C on the SiC coated C/SiC composites. The samples with ion implantation exhibited lower weight loss than those without aluminum ion implantation. The surface morphologies of the samples were obtained by scanning electronic microscope. As compared with the mechanical properties of the samples without ion implantation, those of ion-implanted samples changed little.

Thermal ablation behavior of SiC coating for 3D braided carbon fiber reinforced ZrC-SiC composites in different heat fluxes

Vacuum ◽  
2018 ◽  
Vol 156 ◽  
pp. 334-344 ◽  
Author(s):  
Xiao-Hui Yang ◽  
Ke-Zhi Li ◽  
Long-teng Bai ◽  
Zhi-gang Zhao ◽  
Yi Wang
Keyword(s):  
Carbon Fiber ◽  
Thermal Ablation ◽  
Heat Fluxes ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Sic Composites

Preparation of silicon coated-carbon fiber reinforced HA bio-ceramics for application of load-bearing bone

2020 ◽  
Vol 46 (6) ◽  
pp. 7903-7911
Author(s):  
Xueni Zhao ◽  
Jiamei Zheng ◽  
Weigang Zhang ◽  
Xueyan Chen ◽  
Zhenzhen Gui
Keyword(s):  
Carbon Fiber ◽  
Fiber Reinforced ◽  
Load Bearing ◽  
Carbon Fiber Reinforced ◽  
Coated Carbon

Influence of different surface-coated carbon fibers on the properties of the poly(phenylene sulfide) composites

2018 ◽  
Vol 53 (8) ◽  
pp. 1123-1132 ◽  
Author(s):  
Bedriye Ucpinar ◽  
Ayse Aytac
Keyword(s):  
Differential Scanning Calorimetry ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Mechanical Analysis ◽  
Fiber Reinforced ◽  
Scanning Calorimetry ◽  
Carbon Fiber Reinforced ◽  
Coated Carbon ◽  
Scanning Electron ◽  
Phenylene Sulfide

This paper aims to study the effect of different surface coatings of carbon fiber on the thermal, mechanical, and morphological properties of carbon fiber reinforced poly(phenylene sulfide) composites. To this end, unsized and different surface-coated carbon fibers were used. Prepared poly(phenylene sulfide)/carbon fiber composites were characterized by using Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, tensile test, dynamic mechanical analysis, and scanning electron microscopy. Tensile strength values of the surfaced-coated carbon fibers reinforced poly(phenylene sulfide) composites are higher than the unsized carbon fiber reinforced poly(phenylene sulfide) composite. The highest tensile strength and modulus values were observed for the polyurethane-coated carbon fiber reinforcement. Dynamic mechanical analysis studies indicated that polyurethane-coated carbon fiber reinforced composite exhibited higher storage modulus and better adhesion than the others. Differential scanning calorimetry results show that melting and glass transition temperature of the composites did not change significantly. Scanning electron microscopic studies showed that polyurethane and epoxy-coated carbon fibers exhibited better adhesion with poly(phenylene sulfide).

The Effect of Aluminum Content on TiO2 Coated Carbon Fiber Reinforced Magnesium Alloy Composites

2014 ◽  
Vol 488-489 ◽  
pp. 30-35 ◽  
Author(s):  
Cun Juan Xia ◽  
Ming Liang Wang ◽  
Hao Wei Wang ◽  
Cong Zhou
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Interfacial Microstructure ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Alloy Matrix ◽  
Casting Technique ◽  
Al Content ◽  
Carbon Fiber Reinforced ◽  
Coated Carbon

The interface between the reinforcement and the matrix is significant to metal matrix composites. The effect of aluminum (Al) content on interfacial microstructure and mechanical properties of TiO2coated carbon fiber reinforced magnesium matrix composites by squeeze casting technique have been studied (C/Mg). Mg-2wt%Al and AZ91D were used as alloy matrix. The obtained results indicate that the carbon fibers in both kinds of composites are well protected by TiO2coating, without any interfacial brittle carbide phase observed. The flexural strength of Cf-TiO2/AZ91D (1009MPa) composites is 26.5% lower than that of Cf-TiO2/Mg-2Al (1277MPa) composites. The lath-shaped precipitates of Mg17Al12in AZ91D composites lead to the mechanical properties decrease.

scholarly journals Formation of Buried Epitaxial Si-Ge Alloy Layers in Si Crystal by High Dose Ge ION Implantation

1991 ◽  
Vol 235 ◽  
Author(s):  
Kin Man Yu ◽  
Ian G. Brown ◽  
Seongil Im
Keyword(s):  
Ion Implantation ◽  
Single Crystal ◽  
Lattice Mismatch ◽  
Solid Phase ◽  
Metal Vapor ◽  
Ion Source ◽  
Vacuum Arc ◽  
High Dose ◽  
Solid Phase Epitaxy ◽  
Ion Channeling

ABSTRACTWe have synthesized single crystal Si1−xGex alloy layers in Si <100> crystals by high dose Ge ion implantation and solid phase epitaxy. The implantation was performed using the metal vapor vacuum arc (Mevva) ion source. Ge ions at mean energies of 70 and 100 keV and with doses ranging from 1×1016 to to 7×1016 ions/cm2 were implanted into Si <100> crystals at room temperature, resulting in the formation of Si1−xGex alloy layers with peak Ge concentrations of 4 to 13 atomic %. Epitaxial regrowth of the amorphous layers was initiated by thermal annealing at temperatures higher than 500°C. The solid phase epitaxy process, the crystal quality, microstructures, interface morphology and defect structures were characterized by ion channeling and transmission electron microscopy. Compositionally graded single crystal Si1−xGex layers with full width at half maximum ∼100nm were formed under a ∼30nm Si layer after annealing at 600°C for 15 min. A high density of defects was found in the layers as well as in the substrate Si just below the original amorphous/crystalline interface. The concentration of these defects was significantly reduced after annealing at 900°C. The kinetics of the regrowth process, the crystalline quality of the alloy layers, the annealing characteristics of the defects, and the strains due to the lattice mismatch between the alloy and the substrate are discussed.

Pattern Evolution of NiSi2 on Si Surface upon High Current Pulsed Ni Ion Implantation

2000 ◽  
Vol 648 ◽  
Author(s):  
X.Q. Cheng ◽  
H.N. Zhu ◽  
B.X. Liu
Keyword(s):  
Ion Implantation ◽  
Ion Beam ◽  
Fractal Dimensions ◽  
Metal Vapor ◽  
Ion Source ◽  
Vacuum Arc ◽  
High Current ◽  
Si Substrate ◽  
Kinetics Of ◽  
Si Wafer

AbstractFractal pattern evolution of NiSi2 grains on a Si surface was induced by high current pulsed Ni ion implantation into Si wafer using metal vapor vacuum arc ion source. The fractal dimension of the patterns was found to correlate with the temperature rise of the Si substrate caused by the implanting Ni ion beam. With increasing of the substrate temperature, the fractal dimensions were determined to increase from less than 1.64, to beyond the percolation threshold of 1.88, and eventually up to 2.0, corresponding to a uniform layer with fine NiSi2 grains. The growth kinetics of the observed surface fractals was also discussed in terms of a special launching mechanism of the pulsed Ni ion beam into the Si substrate.

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