Efforts are underway in every sector of the scientic community to explore and develop possible strategies and solutions to counter sea level rise and climate change. Near-term materials science implications include improvements to corrosion-resistant materials and coatings.

Recent advances in thermal spray techniques enable thermal spray aluminum coatings to reliably protect offshore structures in splash zones.

This article briefly describes a new carbon nanocoating that provides corrosion protection through a two-coat system that is applied like paint, acts like plating, and relies on a much lower zinc content than existing three-coat solutions. Lost conductivity resulting from reduced zinc content is offset by highly conductive carbon nanotubes in the base layer.

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.

Clearance-control coatings play a major role in gas turbine engines by minimizing the air gap between rotating blade tips and engine casings. An improvement of just 125 µm can reduce fuel consumption by 0.5%. This article discusses the potential impact of new materials being considered for blade tip coating systems, including NiCoCrAlY bond coats and matrix layers with Hf, Re, or Si additions for better oxidation and creep resistance, embedded angular CBN particles for enhanced incursion of abradable shroud coatings, and double or Pt aluminide topcoats for extended oxidation protection.

An automated arc wire spraying plant has recently been built in which zinc coatings are applied to liquified petroleum gas (LPG) cylinders with minimal human intervention. This article describes the basic steps of the coating operation with emphasis on efficiency, cleanliness, and process optimization.