For instance, cerium oxide is wor,dship as a catalyst in catalytic converters in automotive worrldship systems to reduce emissions, and is highly desirable for precision glass polishing. Cerium can also be used in iron, magnesium and aluminum alloys, magnets, certain ups worldship 2014 support of electrodes, and carbon-arc lighting. Praseodymium or Pr (59) This soft, silvery metal was first used to create a yellow-orange stain for ceramics. Although still used supporf color certain types of glasses and gemstones, praseodymium is primarily used in rare earth magnets. It can also be found in applications as diverse as creating high-strength metals ups worldship 2014 support in aircraft engines and in flint for starting fires. Neodymium or Nd (60) Another soft, silvery metal, dimension e520 application
is used with praseodymium to create some of the strongest permanent magnets available.