![]() ![]() Tim Thomas stopped 23 shots for the Bruins, who have a one-point lead over eighth-place Philadelphia, with idle Buffalo just five points back in the chase for the conference's bottom playoff spots. It was the sixth goal in six games for the Bruins, who are seventh in the Eastern Conference but sliding fast with just one win in seven games. Still, the Lightning remained in last place in the Eastern Conference, with little hope of making the playoffs.īoston didn't score until Chuck Kobasew tipped Marco Sturm's slap shot from the point into the net to make it 2-1 with 12:03 left. Vincent Lecavalier, playing in his 700th NHL game, made it 3-1 on an empty-netter with 7.8 seconds left. Three conditions must be met in sufficient amount over a period of time for failure to result.Mike Smith stopped 35 shots, and the last-place Tampa Bay Lightning got goals from Jeff Halpern and Andreas Karlsson in a 3-1 victory Thursday over the slumping Boston Bruins. Hydrogen Embrittlement requires three conditions to occur: (1) Material Susceptibility (2) Tensile Stress (3) Hydrogen. Hydrogen Embrittlement (HE) causes permanent loss of ductility in a metal or alloy over a period of time and can lead to catastrophic failures. Business Opportunity with DLA Land & Maritime.Introduction to the Clean Hardware Abatement Project.The Defense Logistics Agency (DLA) included presentations on the transition away from Hexavalent Chromium and Cadmium plating. On June 2022, Industrial Fasteners Institute (IFI) hosted a webinar on Hexavalent Chromium and Cadmium Abatement. Hexavalent Chromium and Cadmium Abatement LHE Zn-Ni has superior corrosion protection and coating integrity over a wider range of thicknesses. ![]() Range of Coating Effectiveness for LHE Zn-Ni vs LHE Cadmium. ![]() It recommended updating NAS (National Aerospace Standards) fastener specifications so that LHE Zn-Ni coated fasteners could be made available to the The report concluded that LHE Zn-Ni plating was an upgrade over cadmium hexavalent chromium plated fasteners. Zn-Ni fasteners showed better results for maximum run-on and breakaway torque.Established fastener torque values would not need to be changed for LHE Zn-Ni.Mechanical and corrosion performance was better for LHE Zn-Ni.Testing included Class 1-3 Type II plating. LHE Zn-Ni Corrosion Testing and Implications for Fasteners. In February 2022, the Ogden Air Logistics Center (USAF) released a report titled The results were highly positive, with some members stating that LHE Zn-Ni is a drop in replacement for cadmium in high strength steel landing gear The Zn-Ni compositions considered were from 5-15%, and brighteners and other additives were removed to make the plating porous (dull).īoeing reported positive results with plans for future testing.įurther testing was conducted reported in 2011 in collaboration with ES3, Boeing, and USAF. In 2003, Boeing began work to develop a LHE (Low Hydrogen Embrittlement) Zn-Ni Plating as an environmental alternative to cadmium. Zinc plating has been considered as an alternative, but its performance characteristics are below cadmium plating. The military and aerospace community has been in search of an alternative to cadmium plating since the 1970s.ĭue to the industry's need for a stringently tested safe drop-in replacement, progress has been slow. Unfortunately, cadmium plating is still commonly used in military and aerospace applications, including fasteners. RoHS and REACH lists cadmium as a restricted substance (100 ppm) and known human ![]() Suggested replacements have included trivalent Hexavalent chromium is carcinogenic and is restricted under RoHS and REACH Historically fasteners used in the aerospace industry have been cadmium plated with hexavalent chromium due to its excellent corrosion resistance, low thickness, and freedom from stick-slip. LHE Zn-Ni Class 2 Type II vs Cadmium AMS-QQ-P-416 Class 2 Type II (Beach Exposure Corrosion Test) History of Zn-Ni Coatings & Aerospace Fasteners ![]()
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