Bethlehem Steel

About: Bethlehem Steel is a based out in . It is known for research contribution in the topics: Coating & Corrosion. The organization has 1529 authors who have published 1559 publications receiving 19098 citations. The organization is also known as: Bethlehem Steel Corporation.

Transmission Mössbauer Analysis of Nanophased Oxides Formed on High Strength Steels

Abstract: Nanophased oxides found in the corrosion coatings of atmospherically weathered steels have properties that are scientifically significant and industrially important. Mossbauer spectroscopy proves to be a very useful tool to accurately characterize the corrosion coatings. Samples of carbon steel were exposed in Campeche, along the Gulf of Mexico for up to one year and the development of corrosion products as a function of steel type and exposure time were studied using Mossbauer spectroscopy, micro-Raman spectrometry and X-ray diffraction. Both X-ray diffraction and transmission Mossbauer spectroscopic results indicated that lepidocrocite, maghemite and goethite were the dominant oxides. Transmission Mossbauer analysis at 77 K indicated that for up to three months of exposure, lepidocrocite and maghemite accounted for nearly 80% of the relative amount, with goethite contributing only 20% to the mixture. However, as the exposure time increased to 6 months, the relative contribution of goethite increased at the expense of decreasing amounts of maghemite. Monitoring the environment during the exposure time indicated that the average time of wetness decreased. The decrease in the relative contribution of maghemite to the total oxide concentration is related to the decreasing time of wetness, with increasing exposure time.

Method of constructing a ship

Abstract: In constructing and launching a ship, a construction area and a way area, both lying in the same horizontal plane, are provided. Sections of the ship are made in the construction area. Each section rests on a gas cushion support pallet. While so supported, the sections are moved to the way area where they are joined together to form the ship. From the way area and while still supported on the gas cushion support pallets, the ship is moved horizontally to a drydock which is ballasted and rests on an underwater supporting structure. The drydock is then deballasted, moved from its position above the supporting structure, and ballasted. The ship is then floated out of the drydock.

Method of forming minimized spangle coated strip

Abstract: MOLTEN ZINC COATED MATERIAL IS WRAP CONTACTED WITH UNEQUAL SIZED INTERNALLY COOLED CHROMIUM PLATED ROLLS PRIOR TO SOLIDIFICATION TO INHIBIT THE FORMATION OF UNDERSIRABLE SPANGLING OF THE ZINC COATED SURFACE. D R A W I N G