scholarly journals Synthesis of Spinel-Hydroxyapatite Composite Utilizing Bovine Bone and Beverage Can

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 96
Author(s):  
Agus Pramono ◽  
Gerald Ensang Timuda ◽  
Ganang Pramudya Ahmad Rifai ◽  
Deni Shidqi Khaerudini
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Compaction Pressure ◽  
Mesh Size ◽  
The Self ◽  
Bovine Bone ◽  
Temperature Synthesis ◽  
Air Atmosphere ◽  
Hydroxyapatite Composite ◽  
Al Powder

Spinel-based hydroxyapatite composite (SHC) has been synthesized utilizing bovine bones as the source of the hydroxyapatite (HAp) and beverage cans as the aluminum (Al) source. The bovine bones were defatted and calcined in the air atmosphere to transform them into hydroxyapatite. The beverage cans were cut and milled to obtain fine Al powder and then sieved to obtain three different particle mesh size fractions: +100#, −140# + 170#, and −170#, or Al particle size of >150, 90–150, and <90 µm, respectively. The SHC was synthesized using the self-propagating intermediate-temperature synthesis (SIS) method at 900 °C for 2 h with (HAp:Al:Mg) ratio of (87:10:3 wt.%) and various compaction pressure of 100, 171, and 200 MPa. It was found that the mechanical properties of the SHC are influenced by the Al particle size and the compaction pressure. Smaller particle size produces the tendency of increasing the hardness and reducing the porosity of the composite. Meanwhile, increasing compaction pressure produces a reduction of the SHC porosity. The increase in the hardness is also observed by increasing the compaction pressure except for the smallest Al particle size (<90 µm), where the hardness instead becomes smaller.

Microstructure and Mechanical Properties of Mg-Based Composites Reinforced with TiB2 Particles

2014 ◽  
Vol 900 ◽  
pp. 141-145 ◽  
Author(s):  
Can Feng Fang ◽  
Guang Xu Liu ◽  
Ling Gang Meng ◽  
Xing Guo Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
High Temperature ◽  
The Self ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
Microstructure And Mechanical Properties ◽  
High Temperature Synthesis

The effects of in-situ TiB2 particle fabricated from Al-Ti-B system via the self-propagating high-temperature synthesis (SHS) reaction technology on microstructure and mechanical properties of Mg-Sn-Zn-Al alloy were investigated. The results indicate that the size of the Mg2Sn and α-Mg+Mg32(Al,Zn)49 phase becomes coarser with the increasing content of Al-Ti-B preform, meanwhile the amount of eutectic α-Mg+Mg32(Al,Zn)49 phase increases too. The addition of Al-Ti-B is favorable toward promoting the strength of composites, but deteriorates elongation. The resulting as-extruded composite material with 4 wt.% Al-Ti-B preform exhibits good overall mechanical properties with an ultimate tensile strength of 291 MPa and an elongation over 2 %.

Investigation on B, Cr Doped Ni3Al Alloy Prepared by Self-Propagation High-Temperature Synthesis and Hot Extrusion

2013 ◽  
Vol 747-748 ◽  
pp. 124-131 ◽  
Author(s):  
Li Yuan Sheng ◽  
Jian Ting Guo ◽  
Chao Yuan ◽  
F. Yang ◽  
G.S. Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
High Temperature ◽  
Hot Extrusion ◽  
The Self ◽  
Al Alloy ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis ◽  
Transmission Electron

The Ni3Al and Ni3Al-B-Cr alloys were fabricated by the self-propagation high-temperature synthesis with hot extrusion method. Their microstructure and mechanical properties were studied by using combination of X-ray diffraction, optical microscopy, transmission electron microscopy and compression test. Analysis of X-ray spectra exhibited that the elemental powders had been transformed to the Ni3Al phase after the self-propagation high-temperature synthesis processing. Microstructure examination showed that the alloy without extrusion consisted of coarse and fine grains, but the subsequent hot extrusion procedure homogenized the grain size and densified the alloy obviously. Transmission electron microscopy observations on the Ni3Al alloy revealed that Ni3Al, γ-Ni and Al2O3 particles were the main phases. When the boron and chromium were added, besides the β-NiAl phase, α-Cr phase and some Cr7Ni3 particles with stacking faults inside were observed. In addition, a lot of substructure and high-density dislocation arrays were observed in the extruded part, which indicated that the subsequent extrusion had led to great deformation and partly recrystallizing in the alloy. Moreover, the subsequent extrusion procedure redistributed the Al2O3 particles and eliminated the γ-Ni. These changes were helpful to refine the microstructure and weaken the misorientation. The mechanical test showed that the self-propagation high-temperature synthesis with hot extrusion improved the mechanical properties of the Ni3Al alloy significantly. The addition of B and Cr in Ni3Al alloy increased the mechanical properties further, but the compressive strength of the alloy was still lower than that synthesized by combustion. Finally, the self-propagation high-temperature synthesis with hot extrusion was a good method to prepare Ni3Al alloy from powder.

Button of Hydroxyapatite Composite for Craniotomy Flap Fixation: Fabrication and Mechanical Properties

2020 ◽  
Vol 841 ◽  
pp. 248-253
Author(s):  
Anirut Raksujarit ◽  
Sittiporn Punyanitya
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Bending Strength ◽  
Liquid Phase Sintering ◽  
Bovine Bone ◽  
Outer Plate ◽  
Maximum Value ◽  
Hydroxyapatite Composite ◽  
Flap Fixation ◽  
Powder Compression

This paper deals with the development of button made from a hydroxyapatite (HA) and bioglass composite. The HA powder derived from the bovine bone were added 2.5 and 5 wt% of P2O5-CaO-Na2O-bases glass and subsequently sintered at 1200 - 1350 °C to form the HA ceramics. It was observed that the densest HA ceramic could be achieved for the sample composed of hydroxyapatite with the addition of 5 wt% of bioglass and sintered at 1300°C, resulting in the maximum value of bending strength of about 77 MPa, which ensured the use in load bearing applications of this HA ceramic. The HA and 5 wt% bioglass composite is designed as a button for reattach the bone flap after a craniotomy procedure. Each device is comprised of an inner plate and an outer plate. The fabrication processing was used the powder compression and then sintering at 1300°C for 3 h. The button have fracture toughness (K1C) values of 1.3±0.1 MPa.m1/2 and bending strength of 65.7±3.8 MPa. The liquid phase sintering of this sample contributed to the high mechanical properties that can be use as craniotomy flap fixation.

Electrophoretic Deposition (EPD) of Natural Hydroxyapatite Coatings on Titanium Ti-29Nb-13Ta-4.6Zr Substrates for Implant Material

2020 ◽  
Vol 1000 ◽  
pp. 123-131
Author(s):  
Hidayatul Fajri ◽  
Fuad Ramadhan ◽  
Nuzul Ficky Nuswantoro ◽  
Dian Juliadmi ◽  
Djong Hon Tjong ◽  
...  
Keyword(s):  
Particle Size ◽  
Electrophoretic Deposition ◽  
Coating Layer ◽  
Biomedical Application ◽  
Mesh Size ◽  
Maximum Size ◽  
Deposition Process ◽  
Point Of View ◽  
Bovine Bone ◽  
Thickness Gauge

This study aims to investigate the effect of the electrophoretic deposition process (EPD) of natural HA (extracted from bovine bones) with various particle size on Ti-29Nb-13Ta-4.6Zr (TNTZ) coating surfaces. HA particles were refined from bovine bone powders using planetary ball mill and then sieving to separate the particle based on its size. The maximum size according to sieving mesh size is #25 µm, #63 µm and #125 µm. The coating process was conducted by using EPD apparatus with voltage and time process 10V and 5 minutes, respectively, for each sample. The coating layer morphology was observed with Stereo Microscopy, Scanning Electron Microscopy (SEM) and the thickness was measured with Thickness Gauge. The result shows that the size of the particle determines the coating layer characteristics. The best of HA coating quality according to the implant coating standard is obtained for the 25 µm particle size with the surface coverage is 99%. The thickness is 121 µm and the ratio of chemical composition Calcium and Phosphor Ca/P) is 1,49%. These may be concluded that, on the point of view physical characteristics, natural HA from bovine bone has potential enough as a coating layer to improve the bioactivity implant for biomedical application. However, the mechanical characteristic of the layer is still needed to determine the strength of coating layer for avoiding delamination during application.

Microstructural and Mechanical Properties of Cu-based Alloy Manufactured by Self-Propagating High-Temperature Synthesis Method

2017 ◽  
Vol 33 (3-4) ◽  
pp. 121
Author(s):  
Y. Amiour ◽  
K. Zemmour ◽  
D. Vrel
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Brinell Hardness ◽  
Synthesis Method ◽  
Tensile Tests ◽  
The Self ◽  
X Ray Diffraction ◽  
Temperature Synthesis ◽  
X Ray ◽  
High Temperature Synthesis

<p>Microstructure and properties of Cu<sub>1-x</sub>Zn<sub>1-y</sub>Al<sub>1-z</sub> ranging through (0.29 &lt;X&lt; 0.30; 0.74 &lt;Y&lt; 0.75; and 0.83 &lt;Z&lt; 0.96) alloys obtained by the Self- propagating High-temperature Synthesis (SHS) were examined. The microstructural and mechanical properties were examined, respectively by X-ray diffraction, tensile tests and Brinell hardness. The obtained results showed that the modification of composition lead to the formation of new phases. Therefore, this microstructure affects strongly the mechanical properties of the selected samples. In this study, we will also highlight the SHS technology and prove that it can alternate the conventional methods regarding the development of a Shape Memory Alloys (SMAs).</p><p> </p>

Role of Fe incorporation in the self-propagating high-temperature synthesis reaction in an Al–Ti–B4C system

2009 ◽  
Vol 24 (6) ◽  
pp. 2066-2078
Author(s):  
Ping Shen ◽  
Wenya Li ◽  
Binglin Zhou ◽  
Qichuan Jiang
Keyword(s):  
Particle Size ◽  
The Self ◽  
The Other ◽  
Synthesis Process ◽  
Synthesis Reaction ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Molten Phase ◽  
Combustion Behaviors

Effects of Fe incorporation into Al–Ti–B4C reactants on the combustion behaviors, reaction mechanism, synthesized products, and possible natural convection of fluids were investigated. The incorporation of Fe significantly promotes the self-propagating reaction and decreases the reaction dependence on the B4C particle size. The prior reaction of Fe with B4C leads to the decomposition of B4C and formation of Fe2B and free carbon. On the other hand, the reaction of Fe with Ti and Al gives rise to the emergence of Fe–Ti and Fe–Ti–Al eutectic liquids. As a result, the diffusivity and reactivity of the dissociated carbon and boron atoms are greatly facilitated and the reaction is substantially promoted, yielding a desirable product of TiC, TiB2, and FeAl phases. Moreover, the incorporation of Fe may enhance free convection of the molten phase in the reaction zone and thus contribute to the combustion synthesis process.

Initiation of SHS Flame Induced by Another SHS Flame—Evaluation of the Ignition Energy

2000 ◽  
Vol 123 (1) ◽  
pp. 70-75 ◽  
Author(s):  
Atsushi Makino
Keyword(s):  
Particle Size ◽  
High Temperature ◽  
Physicochemical Parameters ◽  
Analytical Study ◽  
Energy Use ◽  
The Self ◽  
Ignition Energy ◽  
Temperature Synthesis ◽  
System Parameters ◽  
High Temperature Synthesis

Relevant to the self-propagating high-temperature synthesis (SHS) process, an analytical study has been made to investigate dependence of its flame initiation on system parameters, such as operating and physicochemical parameters, in order to obtain ignition energy. Use has been made of the heterogeneous theory which can satisfactorily account for the premixed mode of the bulk flame propagation supported by the nonpremixed mode of particle consumption. It is found that the ignition energy strongly depends on not only heat loss, but also particle size of the higher melting-point metal, which has not been captured in the homogeneous theory.

Investigation on the Mechanical Properties of Silicon Carbide Particulates in Al/SiC/MoS2

2020 ◽  
Vol 979 ◽  
pp. 89-94 ◽  
Author(s):  
Arul Daniel S. Ajith ◽  
C. Dhanasekeran ◽  
S. Sivaganesan ◽  
R. Sridhar
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Stir Casting ◽  
The Self ◽  
Matrix Composites ◽  
High Mechanical Strength ◽  
Minimum Particle Size ◽  
Lubrication Properties

The present study aims to optimize the mechanical properties of Al5059/SiC/MoS2 hybrid composites. The hybrid metal matrix composites has been fabricated through stir casting by reinforcing different size of SiC (10,20&40 µm) with aluminium at different weight fractions (5 %,10% &15%) meanwhile the addition of Molybdenum di sulphide (MoS2) is fixed at 2% which enhances the self lubrication properties. The basic mechanical properties were investigated and the composite with minimum particle size shows high mechanical strength

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