Essays about: "zinc-nickel coatings"

Found 3 essays containing the words zinc-nickel coatings.

1. 1. Improvement and verification of a pin-on-disc tribometer with variable speed and load

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Valentine Lin; [2023]
   Keywords : tribometer; friction; tribometer; friktion;

   Abstract : The use of threaded fasteners can be found throughout the manufacturing industry due to their simplicity. When tightening a threaded fastener, the goal is to reach a desired clamping force. However, the clamping force is not directly measurable in production environments and the tightening torque is instead used to estimate the clamping force. READ MORE

3. 2. Material characterization of multi-layered Zn-alloy coatings on fasteners : Effects on corrosion resistance, electrical conductivity and friction

   University essay from KTH/Materialvetenskap

   Author : Ante Vallien; [2018]
   Keywords : ZnNi; zinc alloy; multi-layered coating; electrodeposited coating; fasteners; corrosion resistance;

   Abstract : Electroplated zinc-alloy coatings have been used on fasteners in the automotive industry for many years. The coating often consists of three layers: a zinc-alloy layer, a passivation layer and a sealer or top-coat. READ MORE

4. 3. Release rates and environmental impact of zinc-nickel coatings in the automotive industry

   University essay from KTH/Materialvetenskap

   Author : Johan Åslund; [2006]
   Keywords : automotive corrosion; metal release; nickel; zinc; zinc-nickel coatings; Cr VI free; surface treatment;

   Abstract : At present the automotive industry is due to an EU directive, replacing hexavalent chrome on vehicles. This is an extensive job as hexavalent chrome is used all over the vehicle and to large extent on fasteners (screws, nuts, rivets etc.). Chrome (VI) is used as a passivating layer on mainly zinc-iron. READ MORE