Search

In this study, the rubber forming process is used to fabricate a micro-channel titanium plate for a PEM fuel cell. The micro-channel plate is fabricated using a 200 ton hydraulic press, and various parameters (punch speed, press pressure, rubber thickness, rubber hardness) are investigated in order to evaluate the formability. TiN films are deposited by reactive DC magnetron sputtering (DCMS) with an electromagnetic field system (EMFS). For the uncoated titanium and TiN-coated titanium substrates, the hardness, surface roughness, and corrosion resistance are estimated by nano-indentation and electrochemical methods, respectively. The improved corrosion resistance of the TiN films can be attributed to the densification of the film caused by enhancement of nitrification with increasing high reactive nitrogen radicals. The uncoated titanium and TiN-coated titanium bipolar plates are combined with a unit cell for a performance test, and respective current densities of 0.396 and 0.888Acm-2 at 0.6V are obtained. [ABSTRACT FROM AUTHOR]

Polymerized, pyridoxalated stroma-free hemoglobin (Poly PSFH), made from outdated human blood, has excellent attributes for use as a blood substitute. A hypothetical larger scale process for the production of Poly PSFH is detailed, and facility design and cost estimates are presented. This paper gives the opportunity to discuss the engineering activities of process scope definition, utilities selection, and aseptic processing techniques, etc. Compliance with cGMP and other FDA regulation will also be discussed.