As biodegradable medical implants, magnesium alloys have attracted great concerns due to their desirable biological and mechanical performances. Nevertheless, the overfast degradation rate of makes it difficult make full use potential in sciences. Therefore, is a hot issue control functionalize via surface modifications. Herein, methacrylate gelatin (GelMA) hydrogel was adopted as coatings on W...

a complexometric method for the determination of titanium in the presence of other metal ions based on the selective masking ability of 5-sulphosalicylic acid towards titanium is described. titanium (iv) present in a given sample solution is complexed with a known excess of edta and surplus edta is titrated against zinc sulphate solution at ph 5-6 using xylenol orange as the indicator. a known ...

an air–assisted liquid–liquid microextraction method for the extraction and preconcentration of trace amounts of some synthetic phenolic antioxidants in biological fluids followed by their determination by gas chromatography–flame ionization detection has been reported. in this method the target analytes are extracted into a few microliters of carbon tetrachloride (extraction solvent) from an a...

The effects of corrosive media on rotating bending fatigue lives (the cyclic numbers from 104 to 108) of different aluminum alloys were investigated, which involved the corrosion fatigue lives of five kinds of aluminum alloys in air, at 3.5 wt. % and 5.0 wt. % NaCl aqueous solutions. Experimental results indicate that corrosive media have different harmful influences on fatigue lives of differe...

Different compositions of Al–Cu alloys were directionally solidified upward with constant growth rate (V>18?6 mm s) and constant temperature gradient (G>4?7 K mm) using a Bridgman type growth apparatus. The variations in electrical resistivity r with temperature for directionally solidified Al–Cu alloys were measured in the range of 3732773 K using a standard four-point probe technique. Accordi...

Nine Al-(1-3)Mg-(0-0.4)Cu-0.15Si-0.25Mn (in wt%) alloys with potential applications in both packaging and automotive industries have been investigated. Tensile testing showed that solution strengthening is in good approximation linearly proportional to the Mg content. Mechanical testing and microstructural examinations of aged samples indicate that Mg2Si phase precipitates contribute to age har...

The corrosion behaviour of three new non-toxic titanium alloys for use as biomaterials has been investigated. The corrosion current densities of these Ti alloys have low values, indicating a passive state that is stable with time. These values were calculated by using both direct and alternate current methods. The comparison with Ti–6Al–4V, widely used as biomaterial, shows slightly lower corro...