ACA Brian Cherry Final Round 2023

Crevice corrosion is caused by a differential concentration of what?

• Oxygen

• Hydrogen

• Water

• Iron

The element ________ is added to steel to make it 'stainless'.

Defects in an epoxy coating on reinforcement can lead to severe localised corrosion due to a s____ anode vs. the size of cathode.

Hydrogen embrittlement results in a loss of...?

• Ductility

• Strength

• Both

Stress corrosion cracking (SCC) is caused by the combination of slowly increased t______ s_____ and an environment.

AS 1627.4 refers to a Class 2 (or Sa 2) surface finish as...

• White metal

• Near white metal

• Brush blast

• Commercial blast

Microbiologically Influenced Corrosion (MIC) occurs when miroorganisms adhere to to a metal surface inside a b______.

Intergranular corrosion is a form of localised corrosion along the g____ ______y of a metal.

What is the chemical composition of magnesium's corrosion product: magnesium oxide (magnesia)?

• MgO

• MgO2

• MgOH

• Mg2O

Corrosion inhibitors may be classified as cathodic, anodic, or m____.