Materials Performance

JUN 2019

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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18 JUNE 2019 W W W.MATERIALSPERFORMANCE.COM Chemical Vapor Deposition Coating Solution Extends Turbine Blade Life Hardide-A, a nanostructured chemical vapor deposition (CV D) coating manufac- tured by Hardide Coatings (Bicester, Eng- land), was recently subjected to testing by the National Physical Laboratory and the University of Manchester to determine the coating's ability to protect FV520B last- stage steam turbine blades from water droplet erosion (W DE) and cracking. The tests demonstrated that the Hardide CV D, tungsten, carbide-based coating extended the life of the steam turbine blades by offering enhanced resistance to both W DE and solid particle erosion. Stainless steel samples with the CV D coating revealed no visible damage in the central zone after 90 h of W DE exposure. Additional testing conducted by a Hardide Coatings cus- tomer found the static-behavior, solid- particle erosion resistance of the CV D- coated steam turbine blades yielded 0.04% weight loss after 30 h of static testing. W DE and fatigue are prevalent industry- wide obstacles that typically damage steam and gas turbine blades and reduce efficiency. However, according to Har- dide's Technical Director Yuri Zhuk, "These tests have proven that the Hardide coating can protect the leading and trail- ing edges of the blades, which will increase their service life and maintain optimal turbine efficiency for longer, sav- ing downtime and maintenance costs." Tel: 44 (0) 1869 353 830, web site: w w w.hardide.com. Ceramic Coating Able to Withstand Extreme Temperatures KECO Engineered Coatings (Indianapolis, Indiana, USA), a leading developer of industrial coatings, created an internal and external ceramic coating system known as the KECO XL2000. Specifically engineered for exhaust component appli- cations for turbos, high-performance die- sel, and racing, this extreme-temperature coating can withstand temperatures up to 2,000 °F (1,093 °C). The coating's ceramic composition allows it to function as an effective thermal barrier with reduced thermal radiation characteristics, says KECO President Mike Klinge. According to Klinge, "the coating cures to a very hard, durable surface with excellent adhesion and its properties will remain color stable and stain resistant." Key performance fea- tures of the KECO XL2000 include the abil- ity to withstand cyclic heating and cool- ing, a reduced tendency toward engine detonation, and protection against corro- sion caused by chemicals, heat, and inter- nal exhaust gases. Other benefits of this technology are reduced temperature under the hood and on the exhaust mani- fold surface, and improved exhaust gas velocity. The coating can be applied in a single coat coverage with a dry film thick- ness of 0.001 to 0.0015 µm. Tel: 1 800-336- 5326, web site: w w w.kecocoatings.com. PRODUCT SHOWCASE Fast-Drying Coating Provides Fire Protection Sherwin-Williams Protective & Marine Coatings (Bolton, Eng- land) has unveiled FIRETEX FX6002, a durable and fast- drying intumescent passive fire protection (PFP) coating for the European market. Along with providing high levels of protec- tion for steel structures, this PFP coating boasts unrivaled curing speeds and dry handling times. Due to its unique reactive binder, FIRETEX FX6002 can dry in an hour and be used without a primer or topcoat in most applications. At the same time, the coating maintains up to two hours of fire protection and long-term corrosion protection. When cured, the paint film becomes damage resistant and can withstand weather exposure after a period of four hours and a minimum 59 °F (15 °C). The product also features a 92% volume solids composition, thereby resulting in low amounts of volatile organic compounds. According to Sherwin-Williams, FIRETEX FX6002 provides PFP applicators with the added benefit of transporting steel- work within hours, as opposed to days. The company also states that its coating has undergone rigorous testing under EN 13381-8 and EN 13381- 9, a pair of European fire testing standards, and BS 476-20 and BS 476-21, British standards for structural steelwork and cellular beams. Tel: +44 (0) 1204 521771, web site: protectiveemea.sherwin-williams.com.

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