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Mn1Ce1 and Mn0.9Co0.1Ce1 complex oxides were prepared by co-precipitation in hydrothermal conditions and their physicochemical properties were characterized with N2 adsorption, XRD, Raman, and SEM. The complex oxides show enough stability and catalytic activity for oxidative degradation of 4,4'-Dibromobiphenyl in sub-critical water. Mn0.9Co0.1Ce1 has higher activity than Mn1Ce1, indicating doping...
Natural product like honey is well known for its compositional diversity, medicinal properties including anti-inflammatory role, wound repair efficacy and nutritional competence. This multi-dimensional character of honey attracts regenerative medicine researchers. However, flow behavior of honey restricts its applications as a sustainable biomaterial matrix. In this juncture this study develops honey-biomaterial...
Due to the lack of regeneration capacity of Articular cartilage and very limited therapies available, it is necessary to design a construct which can mimic hydrogel behavior in articular cartilage. Gelatin and sulphated polysaccharide blends are used for that purpose of this study. Swelling behavior of these hydrogel is observed in both deionized water and phosphate buffer salin (PBS). For mechanical...
Nickel-based Superalloy Inconel 718 is a difficult-to-machine material wide used in hot sections of gas turbine engines in aerospace industry. In this study, machined surface roughness of the machined surface in high speed side milling of Inconel 718 using a solid carbide end mill was investigated experimentally for a wide range of cutting conditions, and chip morphology during dry milling of Inconel...
A absorbent was chose to absorb CS2 from industrial activated carbon (AC), 13X, NaY, ZSM-5. The results indicate that the adsorption of CS2 of the industrial activated carbon is better than the others. The modification of industrial activated carbon (AC) has been used in laboratory in order to make full use of high concentration CO comprehensively. AC was impregnated with Cu(Ac)2, Zn(Ac)2, Mn(Ac)2...
The effect of HIP-temperature on the tensile properties and fracture mechanism of a powder metallurgical (PM) Be-Al alloy based alloy has been investigated in this study. Prealloyed, the PM Be-Al alloy are fabricated with the HIP temperature of 700°C and 900°C. The tensile tests and scanning electric microscopy (SEM) in situ fatigue observations of Be-Al alloy have been conducted. The results of present...
PCL foams were fabricated and tested mechanically and observed via scanning electron microscopy for use in future studies to elucidate the interactions between tissue engineered scaffolds and host tissue following implantation.
A low cost agricultural waste buckwheat hull after extracted natural pigment was used as bisorobent for removal of a cationic dye methylene blue from aqueous solution. The sorbent was characterized by FTIR, scanning electron microscopy (SEM), and potentiometric mass titration. The results showed that buckwheat hull is porous material with functional groups such as hydroxyl and carboxyl, and the pHzcp...
A simple process is presented for the preparation of TiO2 nanoparticles by Co-precipitation method. This process is relatively cheaper and by using different variation we can control particle size and shape. TiCl4 was used as primary precursor along with Na2CO3 for synthesis of Rutile nanoparticles. Synthesis was done with and without modifier. Structural characterizations of samples were performed...
The release of metal ions and wear debris are raising serious concerns on metal-on-metal (MoM) hip prosthesis. The purpose of this work was to evaluate the corrosion and tribocorrosion behavior, of a low-carbon CoCrMo alloy, as a function of proteins content in the biological fluid and normal applied load. Electrochemical tests were performed to study the corrosion behavior of the alloy, under two...
This paper presents the drop test results for edge and corner bonded 0.5 mm pitch lead-free package stackable very thin fine pitch ball grid arrays (PSvfBGAs) as package-on-package (PoP) bottom packages on a standard JEDEC drop test board. The test boards were dropped through an 1828.8 mm long, 110.0 mm diameter tube onto a steel plate. The daisy chain resistance of each PSvfBGA was measured by a...
In the domain of material science, quantitative fractography is an analytical tool to study the characteristics of a fracture surface. The inception of Scanning Electron Microscope (SEM) has motivated the researchers toward the quantitative analysis of such surface. Due to fracture, new surfaces are evolved and voids are also formed. Extraction of such regions (surface/void) from SEM fractographs...
In this work nickel oxide (NiO) thin films have been tested against low concentrations of formaldehyde (HCHO). NiO thin films were deposited on alumina substrates by RF reactive magnetron sputtering in a mixed atmosphere of argon and oxygen. A Pt heating resistor was deposited on the reverse side for an accurate control of the operating temperature. Samples were annealed in synthetic air for 4 hours...
AC contactor is an important component in the control system, and its reliable work is very important too. Electrical contact is a contactor's connecting parts, and it undertakes making and breaking the current. So, it's performance influence the reliable operation of the contactors directly. CJ20-40 AC contactor emerged sticking phenomenon in the course of practice using. So, the electrical contact...
A non-asbestos semi-metallic stainless steel/carbon fiber reinforced PEEK-based friction material was developed and applied in Tunnel Boring Machine(TBM) driven clutch friction plate. The uniform design method of 5 factors and 27 levels was used to design and optimize the match composition. The friction plates were manufactured by dry-processing procedure, comprising mixing, pre-heating, cold pressing,...
Free standing nanowires are produced from synthetic rutiles which are treated with NaOH at 500°C for 4 hours, followed by repeated water washing [1-5]. The samples are treated again with 40% and 50% of NaOH (leaching process). This is the critical part of forming the wire structure. Diameter of the wires from 20-30nm and length of more than 4μm are produced from this process. Products are characterized...
Piezoelectric composites show high promise as components in ultrasonic transducers for higher resolution medical imaging, and structural health monitoring systems as they have excellent piezoelectric properties, such as high piezoelectric coefficients, high electromechanical coupling coefficients, and high dielectric constant. A novel Micro/Nano PZT epoxy 1-3 composite was fabricated in this work...
Main objective of this study is to design and development of multi-die embedded micro wafer level packages (EMWLP) reliability test vehicles. Such as, the laterally placed die EMWLP and the vertically stacked thin die EMWLP. For reliability evaluation, EMWLPs have been subjected to both environmental and mechanical reliability tests as per JEDEC standards. These reliability tests include highly accelerated...
Hydrogen sulfide (H2S), an extremely corrosive and toxic gas, was commonly generated by urban treatment plants, gas and oil refineries, paper and pulp industries and so on. Biofiltration, which was considered as cost-effective and environment-friendly, evoked substantial attention in recent years. In this study, a biotrickling filter filled with polypropylene pall rings was constructed, where efficient...
In this paper, several material candidates for hybrid bonding technology in wafer-level 3D integration were investigated. Polymer materials, including BCB, SU-8, AL-Polymer, and polyimide (PI), were studied and then thermal-compression bonded between 150°C and 450°C. Characterization of bonded layer and evaluation of bond quality for these bonded wafers were investigated by Scanning Acoustic Tomograph...
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