The professional science master's, or PSM, got its start in 1997 as a way to better and more rapidly equip students with much-needed skills in the science, technology, engineering, and math (STEM) fields. Now nearly 300 PSM programs are offered by KGI and 128 other institutions.
Parkerizing, bonderizing, phosphating, or phosphatizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating.s for all chemical conversion coatings, the Parkerized surface must be completely covered with a light coating of oil to maximize corrosion and wear resistance, primarily through reducing wetting action and galvanic action.
The Bonderized steel should be painted immediately after installing to prevent the phosphate coating from developing white rust. The galvanized steel is first cleaned and rinsed and then has a conditioning agent applied to form a fine crystalline zinc phosphate coating. By doing this, the process turns the bare galvanized surface to an inert, crystalline zinc phosphate which then is rinsed and sealed with a dried chromate coating. Bonderized steel is popular in the rainwater goods industry. Typical uses are, rain gutters, downspouts, roof flashings, and roof valleys. This zinc phosphate finish is a perfect surface for painting of the fabricated material in the field.