Graphitization Study guides, Class notes & Summaries

NACE CP2 Exam Questions and Answers oxidation correct answerloss of electrons, positive charge atoms (anode) reduction correct answergain of electrons, negative charged atoms (cathode) forms of corrosion correct answeruniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion...

NACE CP2 Exam Questions and Answers (Graded A) NACE CP2 Exam Questions and Answers (Graded A) NACE CP2 Exam Questions and Answers (Graded A) oxidation - ANSWER-loss of electrons, positive charge atoms (anode) reduction - ANSWER-gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER-uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, se...

oxidation - ANSWER loss of electrons, positive charge atoms (anode) reduction - ANSWER gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Car...

Summary NACE CP2 Study Guide Complete Solutions Verified oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hyd...

1. __________ is a change in the microstructure of certain carbon steels and 0.5 Mo steels after long term operation in the 800º F to 1100º F range. A. Graphitization B. Softening C. Temper Embrittlement D. Creep - Answer A 2. What structure is 304 stainless steel? A. Martensitic B. Austenitic C. Duplex D. Ferritic - Answer B 3. _________ is the result of cyclic stress caused by variations in temperature. A. Creep B. Thermal Fatigue C. Cyclic Cracking D. Stress Corro...

API 571 UPDATED Exam Questions and CORRECT Answers 1. __________ is a change in the microstructure of certain carbon steels and 0.5 Mo steels after long term operation in the 800º F to 1100º F range. A. Graphitization B. Softening C. Temper Embrittlement D. Creep - Correct ANSWER- A 2. What structure is 304 stainless steel? A. Martensitic B. Austenitic C. Duplex D. Ferritic - Correct ANSWER- B

oxidation - ANSWER loss of electrons, positive charge atoms (anode) reduction - ANSWER gain of electrons, negative charged atoms (cathode) forms of corrosion - ANSWER uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hydrogen embrittlement, SCC (Carbonates/b...

API 570 Study Guide (Full) Questions and Answers Rated A+ Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service? 10% for welded pipe, the normal thickness of under-tolerance is? .010 or 10 mils The corrosiveness of soils can be determined by measuring the soils: Resistivity when qualifying a weld procedure t...

Summary NACE CP2 Study Guide Complete Solutions Verified oxidation loss of electrons, positive charge atoms (anode) reduction gain of electrons, negative charged atoms (cathode) forms of corrosion uniform, crevice, galvanic (dissimilar metals) if two metals have to be couple then best to couple metals close together in the galvanic series, pitting, intergranular, selective leaching (dezincification, graphitization), velocity phenomena, environmental cracking (corrosion fatigue, hyd...

Graphitization - Answer A change in the carbide phase of C/S and 0.5 Mo steels after long term exposure to 800° F to 1100°F temperatures causing decomposition into graphite nodules. Softening(Spheroidization) - Answer A change in the microstructure of steels after exposure in the 850 to 1400 range, where the carbide phases in C/S are unstable and may agglomerate from their normal plate-like form to a spheroidal form. Temper Embrittlement - Answer The reduction in toughness due t...