Search Results for aluminizing treatment

Outdoor enclosures for telecom equipment are often constructed from powder-coated aluminum, but with appropriate surface treatments, hot and cold rolled steel can serve in the same capacity at a lower cost. This article, the first of a two-part series, discusses the intrinsic corrosion behavior of hot and cold rolled steel and how it can be modified through galvanizing and aluminizing treatments. Part 2, scheduled for the October 2012 issue of AM&P , covers nonmetallic surface treatments and presents corrosion test results.

Outdoor enclosures for telecom equipment are often made from aluminum, but with the protective treatments described in this two-part article series, inexpensive steels can serve in the same capacity. Zinc-based galvanizing and aluminizing treatments, which were presented in Part 1, may be used alone or together with corrosion-resistant paints, pretreatments, and sealants described here. This article also assesses the corrosion resistance and adhesion properties of different combinations of steels, coatings, and pretreatments by means of salt fog spray testing.

Capable of stopping 50-caliber, armor-piercing rounds, ALON and Spinel are hard and durable transparent polycrystalline materials manufactured using powder based processes. This article describes their unique combination of mechanical, optical, and chemical properties, and reports on recent advances in manufacturing to enable their use for critical defense, industrial, and consumer applications.

Metallographic examination and optical emission spectroscopy shed light on the origin of a lampshade found in the aftermath of Hurricane Katrina. The steels used for the ring and wire in the frame are typical of those made prior to WWII and the fabrication processes appear to be of a similar timeframe. Tassels on the lampshade were determined to be a more recent alteration and the fabric was found to be cow skin parchment based on DNA testing.

A new design and welding process may extend the life of furnace rolls in hot-dip coating lines, which often fail in less than one year. This article is a case study of analysis of a failed furnace roll that led to a proposed improved design to extend component life.

Custom equipment designed for the deposition of exotic materials allows advanced coating solutions and ceramic matrix composites to be utilized for applications in automotive, aerospace, defense, energy, and the farthest reaches of space. This article describes custom systems for chemical vapor deposition and advanced materials processing.

Concrete and cement are among the most widely used building materials worldwide. Concrete is a versatile material with strong potential as a sustainable material. The increased use of mineral additions to lower the clinker component is a feasible option. Adequate recycled material quality monitoring and mix designs enable a wide use of concrete recycled aggregates for the built environment. In addition, new performance-based durability tests that better simulate the real field exposure with the combined environmental actions will promote more resilient, durable, and sustainable reinforced concrete infrastructures.