Larger surface area can reduce nitinol corrosion resistance

Effect of Long-term Immersion on the Pitting Corrosion Resistance of Nitinol

One of the challenges faced by medical-device manufacturers is the use of short-term in-vitro data to evaluate the long-term in-vivo corrosion performance of implants. In this study, mechanically polished Nitinol wires were immersed in phosphate-buffered saline (PBS) at 37 °C for up to one week prior to performing cyclic polarization tests. Results are presented that show the effect of immersio...

Can CAM therapies help reduce antibiotic resistance?

The Centers for Disease Control and Prevention (CDC) reported the consumption of 235 million doses of antibiotics in 2001. It is estimated that 20-50 percent of these were unnecessarily prescribed for viral infections. Bacteria that antibiotics have controlled in the past are increasingly developing resistance to these drugs. Today, virtually all important bacterial infections in the United Sta...

Improvement of Corrosion Resistance of Steels by Surface Modification

The corrosion of metals is a destructive process regarding to the basic modern constructional material with a great importance for the nowadays industry and in many cases represents an enormous economic loss. Therefore, it is not a surprise that the research on the corrosion and corrosion protection of metallic materials is developed on a large scale in different directions and a wide range of ...

Impact of hollow-fiber membrane surface area on oxygenator performance: Dideco D903 Avant versus a prototype with larger surface area.

This study compares the gas transfer capacity, the blood trauma, and the blood path resistance of the hollow-fiber membrane oxygenator Dideco D 903 with a surface area of 1.7 m2 (oxygenator 1.7) versus a prototype built on the same principles but with a surface area of 2 m2 (oxygenator 2). Six calves (mean body weight: 68.2 +/- 3.2 kg) were connected to cardiopulmonary bypass (CPB) by jugular v...

Corrosion Barrier Development for LBE Corrosion Resistance