passive metal

passive metal

[′pas·iv ′med·əl]
(metallurgy)
A metal on which a surface film forms by natural process or by immersion in a passivating solution, making the metal resistant to corrosion.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
(5) The enhanced corrosion protection performance of the EPGN coating was attributed to the redox catalytic capabilities of amino-capped aniline trimer (ACAT) units existing in the EPGN, which were thought to induce the formation of passive metal oxide layers on the CRS electrode.
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.
In other words, Nb is an active metal that will appear to be noble due to the formation of a passivating layer (i.e., a passive metal, or in the older literature, a valve metal) (37).
It performs equally well on both active and passive metal surfaces including stainless steel and plated material without the use of a primer.
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.
Differential aeration cells are prone to causing localized corrosion at pits (crevice corrosion) in materials such as stainless steel, aluminum, nickel and other passive metals when they are in contact with seawater etc.
[129] developed a model to describe the effect of mechanical and material parameters on the wear-assisted corrosion rate of passive metals in two-body sliding contacts.
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.
It is common that the passive metals undergo localized corrosion (pitting or crevice corrosion) in chloride environment, such as physiological solutions, due to the development of occluded cells.
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.