in this study, cu50-ni50 alloy were synthesized by mechanical alloying. the alloy was then reinforced by dispersion of multiwalled carbon nanotubes using a planetary high energy ball mill. x-ray diffraction, scanning electron microscopy and vibrating sample magnetometer were used to evaluate the effects of cnt addition on the characteristics of the nanocomposites. xrd results of cu-ni sample sh...

Listeria monocytogenes is an important re-emerging pathogen which is commonly found in the environment. Many outbreaks have been associated with the contamination of food produce, often linked to cross-contamination from surfaces or equipment to prepared foodstuffs. In the present study a number of copper-base metal alloys have been used to assess the survival times of L. monocytogenes on diffe...

Heat-resisting alloys are designed to survive high-temperature oxidation by forming a slow-growing scale, usually Cr 2 O 3 , which acts as barrier between the metal and its environment. However, that succeed in this way when exposed hot oxygen or air fail do so CO gas. Instead, they exhibit rapid “breakaway” corrosion, developing oxides of alloy base iron and/or nickel. The growth these non-pro...

Background Nickel-titanium alloy is applied to biomaterials such dental wire, stents and so on, because they have outstanding capacities for corrosion-resistant, adequate mechanical strength and shape-memory [1,2]. On the other hand they have a risk of metal allergy because of leaking nickel ions from them in aqueous conditions. It is not clear the reason why nickel causes allergy and what the ...

Background: Orthodontics is a part of dentistry that includes preventive methods and correction of dental irregularities that need to be repositioned by functional and mechanical tools to provide an ideal occlusion and a beautiful face for patients. There are currently four metal arch wires used in orthodontic treatment: stainless steel alloy, cobalt-chromium alloy, nickel-titanium alloy, and b...

OBJECTIVES/HYPOTHESIS To investigate and treat the late complications of using nickel-titanium alloy stents in laryngotracheal, bronchial, and esophageal stenosis patients who developed severe laryngotracheal stenosis (SLS). STUDY DESIGN Retrospective clinical study. METHODS Thirteen patients with SLS or tracheoesophageal fistula secondary to insertion of a nickel-titanium alloy stent for t...

PURPOSE The purpose of this study was to evaluate cell toxicity due to ion release caused by galvanic corrosion as a result of contact between base metal and titanium. MATERIALS AND METHODS It was hypothesized that Nickel (Ni)-Chromium (Cr) alloys with different compositions possess different corrosion resistances when contacted with titanium abutment, and therefore in this study, specimens (...

Abstract Numerical methods can accelerate the design of alloys with improved material properties. One approach is coupling multi-criteria optimization CALPHAD-based models alloy While this technique has already yielded promising new Nickel-base superalloys, applicability to CoNi-base not yet been investigated. These show properties for application as wrought high-temperature materials. We desig...