A series of biodegradable Mg-Cu alloys is designed to induce osteogenesis, stimulate angiogenesis, and provide long-lasting antibacterial performance at the same time. The Mg-Cu alloys with precipitated Mg2Cu intermetallic phases exhibit accelerated degradation in the physiological environment due to galvanic corrosion and the alkaline environment combined with Cu release endows the Mg-Cu alloy...

The mechanism of copper (Cu) voids formation from electro-chemical plating (ECP) followed by Cu chemical mechanical polishing (CMP) are studied in Cu dual-damascene interconnection. The formation of Cu voids at metal lines is the main problem that causes not only the failure of via-induced metal-island corrosion but also yield loss. The galvanic theory and Cu lifting mechanism are proposed to e...

This paper reports on a study of the reaction of solder with the electrolessnickel with immersion gold (ENIG) plating system, and the resulting interfacial structures. A focused-ion beam (FIB) was used to polish the cross sections to reveal details of the microstructure of the ENIGplated pad with and without soldering. High-speed pull testing of solder joints was performed to expose the pad sur...

By macroscopic observation, composition analysis, mechanical properties test, SEM, energy spectrum, overall grip tensile test and finite element mechanics calculation method, the strain clamp steel anchor corrosion failure of a 500 kV transmission line is analysed. The results show that for 31 years are result natural corrosion, rate accelerated due to galvanic crevice stress damaged surface ga...

The anodising process parameters (voltage, temperature, and electrolyte) control the morphology chemical composition of resulting anodic oxide film by altering balance between growth dissolution reactions. porosity is reduced addition tartaric acid to a sulfuric electrolyte, while at elevated temperatures enhances dissolution, leading wider pores rougher surfaces. No significant changes in as f...

In this investigation, the effect of microstructural changes and phase equilibria on corrosion behavior hydrogen induced cracking (HIC) sensitivity an API X65 pipeline steel was studied. For purpose, heat treatment performed at 850 °C, 950 1050 °C 1150 to engineer desired microstructure steel. Then, evolution by optical microscopy, Field Emission Scanning Electron Microscopy (FE-SEM) equipped w...

The effect of galvanic coupling on the corrosion behavior Mg and Mg17Al12 in Mg-Al alloys was studied by Scanning ElectroChemical Microscopy (SECM). between investigated using a “model” Mg+Mg17Al12 material with controlled microstructure to evaluate hydrogen evolution at micrometric scale. SECM maps revealed that accelerates rate (formation thicker passive layer) both components. acts controver...