Carbon composite material and polysulfone modified by nano-hydroxyapatite

e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Barbara Szaraniec ◽  
Patrycja Rosół ◽  
Jan Chłopek
Keyword(s):  
Mechanical Properties ◽  
Body Fluid ◽  
Carbon Composite ◽  
Biological Properties ◽  
Nano Particles ◽  
Carbon Composites ◽  
Micro Particles ◽  
Carbon Composite Material ◽  
Strength Tests ◽  
Natural Hydroxyapatite

AbstractThis paper reports on mechanical and biological properties of carboncarbon1 composites and polysulfone modified by hydroxyapatite (HAP), both natural (nano-particles) and synthetic (micro-particles) minerals. Results show that carbon-HAP composites have mechanical properties similar to carbon-carbon composites, while addition of HAP to polysulfone causes advantageous growth of Young’s modulus and limitation of creep, and disadvantageous decrease of tensile strength. Tests performed in simulated body fluid for carbon-HAP and polysulfone- HAP composites prove that the process of hydroxyapatite build-up becomes most intensive in the case of composites with nano-particles originating from natural hydroxyapatite.

Processing-Microstructure-Tensile Property of Vapor Grown Carbon Fiber Reinforced Carbon Composite

1995 ◽  
Vol 383 ◽  
Author(s):  
Jyh-Ming Ting
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Carbon Fiber ◽  
Physical Properties ◽  
Tensile Properties ◽  
Gas Phase ◽  
Thermal Management ◽  
Carbon Fibers ◽  
Carbon Composite ◽  
Carbon Composites

ABSTRACTIn contrast to the form in which other carbon fibers are produced, vapor grown carbon fiber (VGCF) is produced from gas phase precursors in the form of individual fibers of discrete lengths. VGCF can be harvested as a mat of semi-aligned, semicontinuous fibers, with occasional fiber branching and curling. The use of VGCF mats as reinforcement result in composites which exhibit unique microstructure and physical properties that are not observed in other types of carbon composites. This paper describes the processing of VGCF mats reinforced carbon composites, and its unique microstructure and properties. Utilization of fiber tensile properties, as well as thermal conductivity, in the composites is discussed. Comparison of experimental results from various VGCF composites to theory indicates that mechanical properties are more strongly affected by characteristics of VGCF mat than are thermal conductivity. The implications of this relationship favors applications for thermal management where structural demands are less stringent.

Experimental Analysis of Hole Ovality in Drilling of Carbon-Carbon Composites

2014 ◽  
Vol 592-594 ◽  
pp. 294-301 ◽  
Author(s):  
K.V. Krishna Sastry ◽  
V. Seshagiri Rao ◽  
M.S. Kumar ◽  
A. Velayudham
Keyword(s):  
Process Parameters ◽  
Coordinate Measuring Machine ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Influence Of Process Parameters ◽  
Carbon Composite Material ◽  
Density Values ◽  
Measuring Machine ◽  
Coated Carbide

The Carbon-Carbon (C-C) composite materials are logical candidates for the manufacture of space crafts and other advanced structures, due to their low density values. These materials are naturally expensive, and the machining cost increases the final product’s price. The literature availability on the machining, particularly with reference to drilling operation of these materials is very rare. Hence an experimental investigation has taken to study the hole quality of this ubiquitous carbon-carbon composite material. This paper presents a comprehensive analysis about the influence of process parameters on the ovality of the carbon-Carbon composite plate, which is measured with a coordinate measuring machine. The drilling experiments were carried with two different tools like HSS and TiN coated Carbide materials on a CNC drilling machine. The Point Angle, spindle speed and feed rate were chosen as process parameters, and their impact on the quality of drilled hole was analyzed with the help of Taguchi’s orthogonal array and ANOVA-TM software. A comparison was done between the performances of drilling by these two different tools.

scholarly journals Influence of Ta2O5 doping on mechanical and biological properties of silicate glass-ceramics

2016 ◽  
Vol 34 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Madeeha Riaz ◽  
Rehana Zia ◽  
Farhat Saleemi ◽  
Farooq Bashir ◽  
Riaz Ahmad ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Silicate Glass ◽  
Glass Ceramics ◽  
Biological Properties ◽  
High Load ◽  
Apatite Formation ◽  
Strength Tests ◽  
Mechanical And Physical Properties ◽  
Maximum Compressive Strength

AbstractThe mechanical properties of silicate glass-ceramics were evaluated based on the compressive strength tests. It was found that Ta2O5 addition improved densification, refinement of the microstructure and toughening of the bodies. The maximum compressive strength of the bodies with 1 mol% Ta2O5 was increased 3-fold (245.92 ±0.3 MPa) in comparison to undoped glass-ceramics which was measured to be 89.04 ±0.3 MPa, while for 3 mol% it became 4-fold (387.12 ±0.4 MPa) greater. The addition of Ta2O5 stabilized the system by controlling the biodegradation of the glass-ceramics. It effectively depressed the apatite formation as by addition of 3 mol% Ta2O5 no apatite layer was observed. It may be concluded from this study that mechanical and physical properties can be improved by the addition of Ta2O5, but at a cost of bioactivity. Still the optimized composition having Ta2O5 ⩽ 1 mol% may provide appropriate strength of biomaterials for high load bearing applications.

Processing and Characterization of an Al2O3/TiCN Micro-Nano-Composite Graded Ceramic Tool Material

2012 ◽  
Vol 499 ◽  
pp. 132-137
Author(s):  
Z.J. Gao ◽  
Jun Zhao ◽  
Guang Ming Zheng
Keyword(s):  
Mechanical Properties ◽  
Tool Material ◽  
Nano Particles ◽  
Ceramic Tool ◽  
Nano Composite ◽  
The Core ◽  
Micro Particles ◽  
Ceramic Tool Material ◽  
Graded Ceramic Tool ◽  
Al2o3 Particles

In this study, an Al2O3-based functionally graded ceramic tool material reinforced with TiCN micro-particles and nano-Al2O3 particles was fabricated by using hot-pressing technique. The experimental results showed that optimal mechanical properties were achieved for the composite with the addition of nano-Al2O3 particles increasing from 10vol.% in the surface to 20vol.% in the core, with the flexural strength, fracture toughness and Vicker’s hardness being 1073MPa, 5.99MPa.m1/2 and 21.78GPa, respectively. The microstructure and phase composition of the composites were characterized with SEM, TEM and XRD. It is believed that addition of nano-Al2O3 increasing from the surface to the core, which developed an nano-particles-rich tougher core and a hard Al2O3/TiCN-rich surface, improved the integrated mechanical properties of micro-nano-composite graded ceramic material.

Study of Mechanical Behaviour of Stir Cast Aluminium Based Composite Reinforced with Mechanically Ball Milled TiB2 Nano Particles

2014 ◽  
Vol 984-985 ◽  
pp. 410-415
Author(s):  
E.S. Esakkiraj ◽  
S. Suresh ◽  
N. Shenbaga Vinayaga Moorthi ◽  
M. Krishna Kumar ◽  
S.M. Jenin Ranjith
Keyword(s):  
Mechanical Properties ◽  
Density Ratio ◽  
Casting Process ◽  
Stir Casting ◽  
Milling Process ◽  
General Aviation ◽  
Nano Particles ◽  
Manufacturing Cost ◽  
Matrix Composites ◽  
Micro Particles

Metal matrix composites possess some glamorous properties like light weight, low density ,high strength-to-density ratio, formable to complex shape, lower manufacturing cost and are used more in commercial, industrial, marine, naval based industrial and are extensively used in automobiles and aerospace like empennage, wings, fuselage in fighter aircraft, bomber, transport, general aviation, rotary aircraft etc. Many researches are done on micro structural metals matrix composites and they result shows that composite of micro structural having good mechanical properties. Instead of using micro structural nanoparticles are used for better mechanical properties and better applications in aeronautical field. The present study is an attempt to prepare and analysis of mechanical properties of Aluminium 6061 reinforcement with TiB2nanoparticles using liquid metallurgy. By the use of ball milling process the TiB2micro particles are converted in to nanoparticles and reinforced with Aluminium 6061 in stir casting process. The addition level of reinforcement is being varied from 0-15wt% in step of 4 wt%.Test carried out on the fabricated composite included scanning electron microscopy, XRD, EDAX analysis, and Thermal analysis.

scholarly journals The Effect of Printing Parameters on Electrical Conductivity and Mechanical Properties of PLA and ABS Based Carbon Composites in Additive Manufacturing of Upper Limb Prosthetics

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 398 ◽  
Author(s):  
Attila Pentek ◽  
Miklos Nyitrai ◽  
Adam Schiffer ◽  
Hajnalka Abraham ◽  
Matyas Bene ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Upper Limb ◽  
Acrylonitrile Butadiene Styrene ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Signal Transfer ◽  
Electrical Components ◽  
Printing Parameters ◽  
Upper Limb Prosthetics

Additive manufacturing technologies are dynamically developing, strongly affecting almost all fields of industry and medicine. The appearance of electrically conductive polymers has had a great impact on the prototyping process of different electrical components in the case of upper limb prosthetic development. The widely used FFF 3D printing technology mainly uses PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene) based composites, and despite their presence in the field, a detailed, critical characterization and comparison of them has not been performed yet. Our aim was to characterize two PLA and ABS based carbon composites in terms of electrical and mechanical behavior, and extend the observations with a structural and signal transfer analysis. The measurements were carried out by changing the different printing parameters, including layer resolution, printing orientation and infill density. To determine the mechanical properties, static and dynamic tests were conducted. The electrical characterization was done by measuring the resistance and signal transfer characteristics. Scanning electron microscopy was used for the structural analysis. The results proved that the printing parameters had a significant effect on the mechanical and electrical characteristics of both materials. As a major novelty, it was concluded that the ABS carbon composite has more favorable behavior in the case of additive manufacturing of electrical components of upper limb prosthetics, and they can be used as moving, rotating parts as well.

Lithiation/ Delithiation Process of Silicon-Carbon Composites Prepared by Mechanical Alloying

2015 ◽  
Vol 814 ◽  
pp. 49-53
Author(s):  
Ya Feng Ang ◽  
Xin Yi Ren ◽  
Zhen Bo Dou ◽  
Xun Yong Jiang
Keyword(s):  
Composite Material ◽  
Mechanical Alloying ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Capacity Retention ◽  
Silicon Carbon ◽  
Sei Film ◽  
Carbon Composite Material ◽  
Doped Silicon ◽  
Better Than

In this study, graphite doped silicon was prepared by mechanical alloying (MA). MA is an effective method to manufacture silicon-carbon composite. The results show that the capacity retention ability of the graphite doped silicon by MA anode is better than silicon. The fellow result shows that LiaCb appears at the middle of lithiation process and disappear with the production of LixSiy, LixSiy produce and disappears at the end of lithiation process and beginning of delithiation process respectively. The SEI film enhanced with the increasing amount of lithium and silicon-carbon composite material was severely decomposed with the cycles increase.

ANALYSES OF INFLUENCE FACTORS ON MECHANICAL PROPERTIES OF CERAMIC COMPOSITES REINFORCED BY NANO-MICRO PARTICLES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1352-1357
Author(s):  
DONG-MEI LUO ◽  
YING-LONG ZHOU ◽  
HONG YANG
Keyword(s):  
Mechanical Properties ◽  
Young’S Modulus ◽  
Volume Fraction ◽  
Young's Modulus ◽  
Influence Factors ◽  
Ceramic Composites ◽  
Nano Particles ◽  
Interfacial Damage ◽  
Volume Fractions ◽  
Micro Particles

The main influence factors on mechanical properties of ceramic composites reinforced by spherical nano-micro particles are investigated in this study. The sizes of the particles vary from micro (0.5 µm) to nano-scale (40 nm). Two kinds of representative volume elements (RVE) are applied to describe different arrays of nano-micro particles. One is the nesting array in which a nano-particle is nested within the microscopic particles, and the other is the enwrapping array in which a micro-particle is enwrapped by some nano-particles. The finite element (FE) analysis is conducted by the global-local homogenization method with precise period boundary conditions. The numerical simulation is performed with the changes of radius ratios of nano-micro particles, volume fractions and the interfacial properties. The results show that the effective Young's modulus of the composites with the enwrapping array has an obvious increase as compared to those with the nesting array for high volume fraction of micro-particles, and it is dependent on the radius ratios of nano-micro particles within certain volume fractions. The interfacial damage between nano-micro particles and their matrix decreases significantly the effective Young's modulus. It is significant to improve the mechanical properties of ceramic materials by mixing some nano- and micro-particles into the matrix with mature interface properties.

Microstructure and mechanical properties of Al–Si–Cu–Fe alloy-based ceramic particle-reinforced nanocomposites and microcomposites and a modified model to predict the yield strength of nanocomposites

2021 ◽  
pp. 146442072110099
Author(s):  
Ege A Diler
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Analytical Model ◽  
Volume Fraction ◽  
Nano Particles ◽  
Matrix Composites ◽  
Casting Method ◽  
Modified Model ◽  
Micro Particles ◽  
Microstructure And Mechanical Properties

The effects of volume fraction, size, and type of reinforcement particles on the microstructure and mechanical properties of Al–Si–Cu–(Fe) alloy matrix composites were investigated and an analytical model was modified to predict the yield strength of the particle-reinforced nanocomposites. Nano- and micro-particle-reinforced Al–Si–Cu-(Fe) matrix composites (N-AMCs and M-AMCs) were manufactured by adding two different types and sizes of reinforcement particles to Al–Si–Cu–(Fe) alloys at different volume fractions using a two-step stir casting method combined with a high-energy ball milling process and a high-pressure die-casting method. Microstructural analyzes of N-AMCs and M-AMCs were performed using SEM, EDX, and XRD. The Brinell hardness test and the tensile test were carried out to determine the mechanical properties of the N-AMCs and M-AMCs. The hardness of the N-AMCs and M-AMCs was continuously enhanced by increasing the volume fraction of the reinforcement particles, while the yield strength and ultimate tensile strength of the N-AMCs and M-AMCs were improved up to 1.5 vol.% and 4 vol.% of nano-particles and micro-particles, respectively. An analytical model was modified to predict the yield strength of N-AMCs by integrating the effective volume ratio of nano-particles into each strengthening mechanism. The results predicted by the modified model reached nearly 98% agreement with the experimental results up to 1.5 vol.% of the reinforcement particles. Nano-particles had a much greater effect on strengthening mechanisms compared to micro-particles.

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