Working with our partners we ve now built and are managing our first ever passive metal
mine water treatment scheme to address the pollution which comes from Force Crag Mine in the Lake District National Park.
Designed for locking and sealing fasteners that may need to be disassembled during their service life, this anaerobic threadlocker now provides enhanced performance on both active and passive metal
surfaces including steel, stainless steel, and plated materials.
a passive metal, or in the older literature, a valve metal) (37).
In some cases, hydrogen absorption by a passive metal is so difficult when the passive film is stable that many do not realize that these metals are susceptible to the influence of hydrogen, but unique processing conditions that are specifically designed to attack or remove the passive film defeats this natural protection system enabling hydrogen entry and embrittlement.
It performs equally well on both active and passive metal
surfaces including stainless steel and plated material without the use of a primer.
Henkel has developed two Loctite anaerobic retaining compounds that perform at operating temperatures up to 180AC and show very reliable cure strength through oil contaminations and on passive metal surfaces.
They achieve excellent curing on all metals, including passive metal surfaces like stainless steel.
Rapid development of prototypes Achieving fast fixture on passive metal
substrates such as nickel and other plated surfaces is quite a challenge for an anaerobic threadlocker, especially if requirements also call for good sealing performance and high strength, as well as very good thermal and shock resistance, the company observed.
These products also promote the formation of a protective, passive metal
layer over the entire processing unit.
The company says as well as being more tolerant of oil, this medium strength, anaerobic sealant for all coarse threads also has greater temperature resistance and improved curing on passive metals
such as stainless steel.
The two opening papers propose a method for generating wear maps of stainless steels subjected to aqueous slurry, and compare models of tribo-corrosion in passive metals
under sliding and rubbing conditions.
com/research/da9376/tribocorrosion_of) has announced the addition of Woodhead Publishing Ltd's new book "Tribocorrosion of Passive Metals
and Coatings" to their offering.