Release rates of chromium and nickel from 304 and 316 stainless steel during urban atmospheric exposure : a combined field and laboratory study

• Release rates of chromium and nickel from pickled and skin passed 304 and 316 stainless steel have been determined during a one-year field exposure in an urban environment (Stockholm, Sweden) and through complementary exposures in artificial rain. Measured annual release rates from 304 stainless steel are 0.25-0.3 mg Cr/m(2) and 0.3-0.4 mgNi/m(2), and slightly higher from 316 stainless steel, 0.35-0.4 mgCr/m(2) and 0.7-0.8 mgNi/m(2). The release rates decrease as the rain pH increases and exhibit no direct influence by rain intensity. Variations in release rates are thought to be a result of a non-uniformly attack.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Nyckelord

Atmospheric corrosion

Chromium

Field study

Laboratory study

Nickel

Release rate

Chromium

Cloud seeding

Nickel

Stainless steel

Release rate

Corrosion

atmospheric corrosion

chromium

nickel

pH

rain

stainless steel

Materials science

Teknisk materialvetenskap

Publikations- och innehållstyp

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