Alon Surface Technologies, Leechburg, PA, has published a brochure including brief informative reviews of the company's diffusion technologies designed to provide corrosion and erosion resistance for steels and alloys in high temperature applications. Included are full-color photographs, descriptions, and photomicrographs illustrating AlonizingR, DiffuseAlloyR, Alcro-PlexR, and ChromePlexR technologies.