The mechanism for increasing pitting resistance of stainless steels by the addition of molybdenum

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Protection of Metals

OSTI ID:159832

Kolotyrkin, Ya M; Reformatskaya, I I; Pan`shin, E A ^[1]

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1. Karpov Institute of Physical Chemistry, Moscow (Russian Federation); and others

Introducing 2.6 wt.% Mo into stainless steel 0.03C17Cr14Ni sharply decelerates its pitting dissolution and raises its pitting resistance in neutral halide solutions much more effectively than adding MoO{sub 4}{sup 2{minus}} ions to the solution. Pitting corrosion can proceed at an equipotential surface as well, although it differs fundamentally in its kinetic characteristics from the active dissolution of steels in acidic halide solutions. Alloying with molybdenum can both accelerate and decelerate active dissolution.

• OSTI ID: 159832
• Journal Information: Protection of Metals, Journal Name: Protection of Metals Journal Issue: 5 Vol. 30; ISSN 0033-1732; ISSN PTNMAR
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSION RESISTANCE
MOLYBDENUM ALLOYS
PITTING CORROSION
STAINLESS STEELS