Most power transformer failures are associated with the presence of corrosive sulfur compounds in mineral insulating oil, which dibenzyl disulfide (DBDS) is best known and most widespread compound. The oil failed transformers usually contained DBDS, a compound pronounced affinity for formation copper (I) sulfide (Cu2S). Copper that does not dissolve conducts electricity, can be deposited on pap...

The impact of small alkali halide additions on the melting behavior and corrosivity a synthetic sulfate deposit at 500, 550, 600 °C was investigated. Three differently alloyed commercial heat-transfer materials; low-alloyed 10CrMo9-10, stainless AISI 347, high-alloyed Sanicro 28, were studied. samples exposed for 168 h in tube furnace to K2SO4 + Na2SO4 mixture containing 0.85 mol% KCl, KBr, or ...

Atmospheric corrosion of copper, exposed on a tropical island in the South-Central Pacific Ocean, was reported and compared with those very similar study at same site conducted 20 years earlier. The new measurements—taken over three exposure, from 2010 to 2013—quantified by mass loss, characterized products X-ray diffraction (DRX) Raman techniques, observed attack morphology Scanning Electron M...

Fluorinated components in the form of salts, solvents and/or additives are a staple electrolytes for high-performance Li- and Na-ion batteries, but this comes at cost. Issues like potential toxicity, corrosivity environmental concerns have sparked interest fluorine-free alternatives. Of course, these should be able to deliver performance that is on par with being use today commercial batteries....

This paper focus on Pakistan Hub coal-fired 2×660MW power project which located in the coast areas with high temperature and salty moisture. The category of corrosivity atmosphere is C5. moisture will increase corrosion indoor equipment structures turbine house, threaten safe stable operation plant. Direct evaporative cooling (DEC) technology used to cool centralized supply air for building. To...