In recent years, metal biomaterials have emerged one after another, and many excellent properties, playing a great role in medicine. However, these coatings cannot meet the medical needs every aspect. Schiff base is an important organic synthetic reagent liquid crystal material chemistry. It mainly refers to class of compounds containing imine or azomethine characteristic groups (-RC=N-). has anti-tumor, anti-virus, antifungal antibacterial activities. Based on properties base, made can...

Orthopedics has been identified as a major clinical medicine branch since the 18th century for musculoskeletal disease diagnosis and therapeutics. Along with technological progress, surgical treatment of bone disorders became available in 19th century, while its growth faced several obstacles due to lack proper biocompatible material alternative structures. Therefore, tissue engineering emerged key building block overcome these challenges, providing capability growth, fabricating scaffolds...

Magnesium has been suggested as a potential biodegradable metal for the usage orthopaedic implants. However, high degradation rate in physiological environment remains biggest challenge, impeding wide clinical application of magnesium‐based biomaterials. In order to reduce its and improve biocompatibility, micro‐arc oxidation coating doped with HA particles (MAO‐HA) was applied inner coating, polydopamine (PDA) film synthesized by dopamine self‐polymerization outer coating. The...

Magnesium (Mg), a potential biodegradable material, has drawn wide attention in the bone reconstruction field. However, Mg alloys, served as graft substitution, remain clinical challenge, antibacterial activity of which is required to be enhanced. Here, we prepared magnesium Mg-Zn-Y-Nd-Ag and then had it been further densified by extruding. The microstructure evolution as-cast as-extruded Mg- Zn-Y-Nd-Ag was characterized using optical microscope X-ray diffraction analyses (XRD). results...

The poor corrosion resistance of biodegradable magnesium alloys is the dominant factor that limits their clinical application. In this study, to deal with challenge, fluoride coating was prepared on Mg-Zn-Ca alloy as inner and then hydroxyapatite (HA) outer deposited by pulse reverse current electrodeposition (PRC-HA/MgF2). As a comparative microstructure properties composite fabricated traditional constant (TED-HA/MgF2) were also investigated. Scanning electron microscopy (SEM) images...

This study aimed to control the degradation of Mg–Zn–Ca alloy and improve its biocompatibility using a biodegradable Zn-modified calcium phosphate coating via dual-pulse electrodeposition. The formation mode process were studied herein. Scanning electron microscopy revealed that particles compactly neatly packed, X-ray diffraction analysis, transmission microscopy, Fourier transform infrared spectrophotometer photoelectron spectroscopy comprises CaZn2(PO4)2•2H2O. introduction Zn changes...

The uncontrollable rapid degradation rate of the Mg alloy substrate limited its clinical application, and implant-associated infections have been reported to be main reason for secondary surgery orthopedic implantation. aim this study was produce a multifunctional coating on magnesium-based alloys that improved corrosion resistance, bioactivity, antibacterial properties through preparation polyelectrolytic multilayers (PEMs) consisting chitosan (CS) sodium hyaluronate (HA) silane-modified...

The paper is concerned with the development of an analytical method for calculating air-gap harmonic fields produced by current flowing in bars a cage rotor closed slots. defines correction factors which are used to modify magnitudes flux density waves slotting mmf harmonics account their interaction permeance introduced saturation slot bridges. themselves depend on coefficients, must be calculated taking bridge into account. This accomplished using slot-pitch finite element model rotor....

Electroactive anticorrosion coatings are specialized surface treatments that prevent or minimize corrosion.The study employs strategic thermodynamic equilibrium calculations to pioneer a novel factor in corrosion protection.A first-time proposal, the total acidity (TA) potential of hydrogen (pH) concept significantly shapes medical magnesium alloys.These meticulously designed for robust resistance, blending theoretical insights and practical applications enhance our grasp prevention...

Abstract Magnesium alloys, as the lightest commercial metal engineering structural materials, have good application prospects in automotive, communication equipment, aerospace, and military industries because of their light specific gravity, high strength properties such stiffness, shielding from electromagnetic radiation, easy recycling. In this paper, starting density microstructure magnesium alloy, mechanical corrosion resistance alloy are proposed to measure indexes, corresponding...

Abstract This paper takes the typical AZ31B magnesium alloy, which is increasingly widely used in engineering, as research object and aims to study fracture properties of alloys their damage mechanisms under different loading strain rates modes. EBSD, trace method, other techniques are applied modes at a low amplitude 0.42% high 1.746%, explore compare type number microcracks these two amplitudes, analyze reasons for formation types microcracks. The results show that experimental 0pass 4pass...

The process of solidification, which includes the creation ice, a liquid can become solid by freezing solder in electrical circuits or casting metal industrial settings. Magnesium alloys have developed as promising tools for biomedical applications due to their desirable properties such low density, high strength, and excellent biocompatibility. These are increasingly used various devices, where performance is heavily influenced microstructure characteristics. objective research establish...

In this paper the authors develop a method that enables interaction of stator mmf and air-gap permeance harmonics to be systematically accounted for by harmonic correction factors. The work is verified means measurements made on specially-constructed test rig.

A common challenge to coal cleaning technologies is the development of suitable mechanical equipment together with necessary instrumentation and control devices. This was encountered in design a continuous unit for LICADO (LIquid CArbon DiOxide) process fine cleaning. microcomputer-based system developed operation. The computer equipped A/D D/A converter modules which accept input data from pressure transducers, Coriolis type mass flowmeters, capacitance liquid-liquid interface position...

This paper mainly investigated the synthesis of a high purity PbS crystal directly from lead ash which was collected Tin removal process (LATR). The LATR firstly disposed by nitric acid leaching system to generate nitrate solution. prepared mixing solution with sodium sulfide at room temperature (25?C). effects molar ratio HNO3 Pbin on Pb efficiency investigated, demonstrating that could attain 82.9 % 3. As, Cu, Fe, and Al generally increased increasing LATR, while 99.99 wt% Sn still left in...