A&P types of corrosion sec B Questions and Answers Latest updated 2024

A&P types of corrosion sec B Questions and Answers Latest updated 2024 Protons Neutrons Electrons The basic unit of a chemical element is the atom. It is made up of a nucleus which contains ________ and _______, and is surrounded by spinning _________ Positive No charge Negative What electrical charge is carried by each of these atomic particles? Protón __________ Neutron ______ electron ____ Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen Negative If an atom has more electrons than protons, it is called a _______ ion. Electrochemical Corrosion is a ________ action in which a metal is changed into a chemical salt Anode In an electrochemical reaction, it is ______ which will be eaten away. Anode- presence of a metal that will corrode Cathode- presence of a dissimilar conductive material, which has less tendency to corrode Electrolyte- presence of a conductive liquid Electrical contact The four basic requirements for the formation of corrosion in a material are? Aluminum Oxide Aluminum alloy are protected from oxidation by the formation of a _______ ______ film on its surface Uniform Surface Corrosion _________ is caused by the reaction of metallic surfaces with atmospheric contaminants. (Airborne chlorine, sulphur compounds, oxygen, or moisture in the atmosphere) Pitting _______ form as localized anodic areas, and corrosive action continues until an appreciable percentage of the metal thickness is converted into salt. Oxygen concentration Metal ion concentration Active passive cells What are the three general types of concentration cell corrosion? Filiform __________ forms under the dense film of a polyurethane, where it first appears as a puffiness under the finish Intergranular Corrosion that forms along the grain boundaries within an aluminum alloy is called _______ Quenching Intergranular corrosion of aluminum alloys is usually caused by delaying the _______ Exfoliation ______ is an extreme case of intergranular corrosion.