AM1 CORROSION 509-1

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fishphinfan
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201568
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AM1 CORROSION 509-1
Updated:
2013-06-04 08:59:54
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CORROSION THEORY ch3
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CORROSION THEORY
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  1. ALUMINUM AND MAGNESIUM FORM CORROSION PRODUCTS THAT ARE WHITE OXIDES OR WHAT?
    HYDROXIDES
  2. THE MOST COMMON TYPE OF CORROSION IS WHAT?
    ELECTROCHEMICAL
  3. WHAT IS THE SMALLEST UNIT OF AN ELEMENT, MADE UP OF POSITIVELY CHARGED NUCLEUS SURROUNDED BY A SYSTEM OF NEGATIVELY CHARGED ELECTRONS?
    ATOM
  4. THERE ARE OVER HOW MANY ELEMENTS?
    100
  5. WHAT IS A NEGATIVELY CHARGED SUBATOMIC PARTICLE?
    ELECTRON
  6. WHAT CANNOT MOVE THROUGH METAL CONDUCTORS?
    IONS
  7. WHAT IS A LIQUID SOLUTION CONTAINING IONS?
    ELECTROLYTE
  8. WHAT IS THE BRANCH OF SCIENCE CONCERNED WITH CHEMICAL REACTIONS AT SURFACES IN CONTACT WITH ELECTROLYTES?
    ELECTROCHEMISTRY
  9. HOW MANY CONDITIONS MUST EXIST BEFORE METAL CORROSION CAN OCCUR?
    FOUR
  10. CORRODING METAL IS CALLED THE WHAT?
    ANODE
  11. THE BEST TIME TO PREVENT CORROSION IS AT WHAT STAGE?
    DESIGN
  12. THE METALS MOST COMMONLY USED IN AIRCRAFT CONSTRUCTION ARE ALUMINUM, STEEL, TITANIUM, AND WHAT?
    MAGNESIUM
  13. MOST ALLOYS ARE MADE UP ENTIRELY OF SMALL CRYSTALINE REGIONS CALLED WHAT?
    GRAINS
  14. MANY ALLOYS USED IN AIRCRAFT ARE SENSITIVE TO A FORM OF CORROSION KNOW AS WHAT?
    STRESS CRACKING CORROSION
  15. WHAT CORROSION IS PROBABLY THE MOST COMMON TYPE?
    UNIFORM SURFACE
  16. WHAT CORROSION OCCURS WHEN DIFFERENT METALS ARE IN CONTACT WITH EACH OTHER AND ELECTROLYTE?
    GALVANIC (DISSIMALAR METAL)
  17. WHAT IS A FORM OF EXTREMELY LOCALIZED ATTACK THAT RESULTS IN HOLES IN THE METAL?
    PITTING
  18. WHAT ARE MOST SUSCEPTIBLE TO PITTING DAMAGE?
    STAINLESS STEELS
  19. WHAT CORROSION IS AN ATTACK ON THE GRAIN BOUNDARIES OF THE METAL?
    INTERGRANULAR
  20. WHAT IS AN ADVANCED FORM OF INTERGRANULAR CORROSION WHERE THE SURFACE GRAINS OF A METAL ARE LIFTED UP BY THE FORCE OF EXPANDING CORROSION PRODUCTS OCCURRING AT THE GRAIN BOUNDARIES?
    EXFOLIATION
  21. WHAT CORROSION OCCURS BECAUSE THE ENVIRONMENT OF THE LOCAL AREA IS VERY DIFFERENT FROM THE LARGER ENVIRONMENT?
    CREVICE
  22. WHAT CORROSION IS A FORM OF CREVICE CORROSION WHICH OCCURS ON METAL SURFACES HAVING A THIN ORGANIC PROTECTIVE COATING?
    FILIFORM
  23. FILIFORM CORROSION OCCURS WHEN THE RELATIVE HUMIDITY OF THE AIR IS BETWEEN 65 AND 90% AND THE AIR TEMP IS BETWEEN WHAT?
    70 AND 100
  24. WHAT CORROSION IS THE INCREASE IN THE RATE OF ATTACK  ON A METAL DUE TO THE ACTION OF CORROSIVE FLUID AGAINST THE METAL SURFACE
    EROSION
  25. WHAT CORROSION IS INTERGRANULAR OR TRANSGRANULAR CRACKING OF A METAL CAUSED BY THE COMBINED EFFECTS OF CONSTANT TENSILE STRESS AND CORROSION?
    STRESS
  26. ALUMINUM ALLOY CAN FAIL BY STRESS CORROSION CRACKING WHEN SUBJECTED TO A STRESS WHICH IS ONLY WHAT PERCENT OF ITS RATED CAPACITY?
    10%
  27. WHAT IS THE CRACKING OF METALS CAUSED BY THE COMBINED EFFECTS OF CYCLIC STRESS AND CORROSION?
    CORROSION FATIGUE
  28. WHAT CORROSION OCCURS AT CONTACT AREAS BETWEEN MATERIALS UNDER LOAD SUBJECT TO REPEATED VIBRATION?
    FRETTING
  29. SINCE PURE ALUMINUM IS MORE CORROSION RESISTANT THAN MOST ALLOYS, ALUMINUM SHEET STOCK IS OFTEN COVERED WITH A THIN LAYER OF NEARLY PURE ALUMINUM CALLED CLADDING OR WHAT ELSE?
    ALCLAD
  30. SOME ALUMINUM PARTS ARE PROTECTED WITH AN ELECTROCHEMICALLY APPLIED OXIDE COATING CALLED WHAT?
    ANODIZE
  31. WHAT ARE THE LIGHTEST STRUCTURED METALS USED FOR AIRCRAFT AND MISSILE AIRFRAMES?
    MAGNESIUM ALLOYS
  32. WHAT ARE USED FOR GEARS, BEARINGS, AND HIGH STRENGHT BOLTS AND FOR MOUNTINGS, RACKS, BRACKETS?
    STAINLESS STEELS
  33. TITANIUM AND TITANIUM ALLOYS FIND NUMEROUS USES IN AIRCRAFT, ENGINES, AND MISSILES AT TEMPERATURES UP TO WHAT?
    1000F
  34. WHAT IS USED AS A COATING TO PROTECT STEEL HARDWARE, SUCH AS BOLTS, WASHERS, SCREWS, AND AS PLATING ON ELECTRICAL CONNECTORS?
    CADMIUM
  35. WHAT IS USED AS A PROTECTIVE PLATING?
    CHROMIUM
  36. WHEN ADDED TO STAINLESS STEEL ALLOYS, THE CORROSION RESISTANCE INCREASES WITH NICKLE CONTENTS ABOVE  WHAT?
    10%
  37. WHAT ARE GENERALLY USED IN AVIONIC SYSTEMS AS CONTACTS, SPRINGS, LEADS, CONNECTORS, PRINTED CIRCUIT BOARD CONDUCTORS, AND WIRES?
    COPPER AND COPPER BASED ALLOYS
  38. WHAT IS USED AS PLATING MATERIAL OVER COPPER IN WAVEGUIDES, MINIATURE AND MICROMINIATURE CIRCUITS, WIRES, CONTACTS, HIGH FREQUENCY CAVITIES, TANK CIRCUITS, AND RF SHIELDING?
    SILVER
  39. TRADITIONALLY CONSIDERED THE BEST COATING FOR CORROSION RESISTANCE AND SOLDERABILITY, WHAT IS USED ON PRINTED CIRCUITS, LEADS, AND CONTACTS?
    GOLD
  40. WHAT IS A BRITTLE GOLD-ALUMINUM COMPOUND FORMED WHEN BONDING GOLD TO ALUMINUM?
    PURPLE PLAQUE
  41. WHAT HAS THE BEST COMBINATION OF SOLDERABILITY AND CORROSION RESISTANCE OF ANY METALLIC COATING?
    TIN
  42. GRAPHITE OR CARBON FIBER COMPOSITES ARE MATERIALS WHICH CONSIST OF REINFORCING FIBERS IN A MATRIX MADE OF ORGANIC RESIN, USUALLY WHAT?
    EPOXY
  43. WHAT IN ADDITION TO CONFORMAL COATINGS ARE USED TO ENVELOP AN AVIONIC COMPONENT, MODULE OR ASSEMBLY?
    ENCAPSULANTS
  44. WHAT COMPOUNDS ARE USED TO ENCASE A PART OR COMPONENT, SUCH AS AN ELECTRICAL CONNECTOR?
    POTTING
  45. RUBBERS AND WHAT ELSE ARE USED FOR INSULATION, SEALS, GASKETS, CAPS, TUBING, FILMS, AND COATINGS?
    ELASTOMERS
  46. WHAT IS PRESENT IN AIR AS A GAS OR AS FINELY DIVIDED DROPLETS OF LIQUID
    MOISTURE
  47. WHAT FORMATION RESULTS FROM CONDENSATION OF MOISTURE?
    ELECTROLYTE
  48. THE PRIMARY SOURCE OF THE WORLD'S SALT IS THE OCEAN, WHICH IS WHAT PERCENTAGE OF SALT?
    3.5-3.9
  49. NORMAL SEA WINDS CAN CARRY 10 TO HOW MANY POUNDS OF SEASALT PER CUBIC MILE OF AIR?
    10 - 100
  50. WHAT IS A PARTICULARLY ACTIVE FORM OF OXYGEN WHICH IS FORMED NATURALLY DURING THUNDERSTORMS, BY ARCING IN ELECTRICAL DEVICES, AND BY PHOTOCHEMICAL REACTIONS IN SMOG?
    OZONE
  51. THE TWO RANGES OF SOLAR RADIATION MOST DAMAGING TO MATERIALS ARE ULTRACIOLET AND WHAT ELSE?
    INFRARED
  52. MOST FUNGUS GROWTH IS INHIBITED BY TEMPERATURES ABOVE WHAT?
    104F
  53. MOST MILITARY EQUIPMENT IS INTENDED FOR SERVICE IN WHAT ENVIRONMENTS?
    LOW PRESSURE (HIGH ALTITUDE)
  54. SOME OF THE LEAST RECOGNIZED CONTRIBUTORS TO CORROSION ARE SAND, DUST, AND WHAT?
    VOLCANIC ASH
  55. IN ARID REQUIONS SUCH AS DESERTS, SMALL, SAND PARTICLES ARE OFTEN BLOWN AS HIGH AS HOW MANY FEET?
    10,000
  56. NONMETALLIC MATERIALS SUFFER THE MOST DAMAGE FROM THE HOT DESERT CLIMATES, WHERE AIR TEMPERATURES DURING THE DAY MAY REACH WHAT?
    124F
  57. THE GREATES CHALLENGE TO THE AIRCRAFT INDUSTRY IS THE DESIGN OF EQUIPMENT THAT IS PROTECTED FORM CORROSION AND DETERIORATION IN THE HEAT HUMIDITY THAT PREVAILS WHERE?
    THE TROPICS
  58. THE TROPICAL ENVIRONMENT IS SUSTAINED BY LONG PERIODS OF HEAVY RAINFALL, DURING WHICH, AS MANY AS HOW MANY INCHES OF RAIN MAY FALL?
    100
  59. WHAT ATTACK INCLUDES THE ACTION OF BACTERIA, FUNGI AND MOLDS?
    MICROBIAL ATTACK
  60. BACTERIA MAY BE EITHER AEROBIC, OR WHAT ELSE?
    ANAEROBIC
  61. WHAT BACTERIA REQUIRE OXYGEN TO LIVE?
    AEROBIC
  62. IDEAL GROWTH CONDITIONS FOR MOST FUNGI AND BACTERIA ARE TEMPERATURES BETWEEN 68 AND WHAT?
    104
  63. WHAT IS INTENDED TO PROTECT EQUIPMENT OR COMPONENTS AGAINST CORROSION, DETERIORATION, AND PHYSICAL DAMAGE DURING TRANSPORTATION AND STORAGE?
    PACKAGING
  64. MOST FRONT LINE AIRCRAFT AVERAGE HOW MANY HOURS PER DAY IN FLIGHT OPERATION?
    1-2

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