Effect of ion implantation and silanization on the corrosion and cathodic delamination resistances of mild steel

Thesis/Dissertation · Wed Jan 01 00:00:00 EST 1986

OSTI ID:6775689

De Crosta, M A

Two surface modification techniques for improving the corrosion and delamination resistances of steel were investigated: ion implantation and silanization. Ion implantation improves corrosion resistance and, subsequently, cathodic delamination through the formation of a stable, modified surface oxide. Silane treatment of steel inhibits cathodic activity and electron flow as a result of the formation of a complete, stable polymeric barrier film on the surface. Increased chemical and physical interactions with a subsequently applied polymer matrix significantly reduce the delamination rate. The corrosion resistance of automotive steel (DQSK) steel was observed to increase following the implantation of aluminum and titanium. Electrochemical evaluations of the resultant surfaces revealed more noble corrosion potentials, decreased corrosion current densities and polarization resistance values approximately three orders of magnitude greater than non-implanted steel. An overall reduction in cathodic activity was also observed for these systems. Greater than a 75% reduction in the delamination rates for polybutadiene- and Eponol-coated Al-and Ti-implanted steels was observed, attributable to decreased cathodic activity. Three of the ten organosilanes brush-coated on to 1010 steel produced corrosion-resistant barrier films.

• Research Organization: Lehigh Univ., Bethlehem, PA (USA)
• OSTI ID: 6775689
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STEELS
CORROSION RESISTANCE
ION IMPLANTATION
ELECTROCHEMICAL CORROSION
FILMS
MODIFICATIONS
PROTECTIVE COATINGS
SILANES
SURFACES
ALLOYS
CHEMICAL REACTIONS
COATINGS
CORROSION
HYDRIDES
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
SILICON COMPOUNDS
360106* - Metals & Alloys- Radiation Effects
360105 - Metals & Alloys- Corrosion & Erosion