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Explain objectives of annealing? Discuss the various annealing processes? Is spheroidising different from annealing? Illustrate.
A slow cooling rate from eutectoid temperature yields course pearlite - a mixture of comparatively coarse crystals of ferrite and cementite. Such a slow cooling is known as annealing. Here, sufficient time is available for carbon in the austenite to diffuse and redistribute itself to 0.02% in ferrite and 6.67% in cementite. During annealing, effective transformation temperature is low, where rate of growth is rapid compared to rate of nucleation. Hence, spheroidising is obviously different from annealing.
Benefits of flame photometry: The subsequent are the main advantages of flame photometry. It gives high sensitivity and high reliability for the determination of elemen
what groups comprise each block of elements(s,p.d and f blocks)in the periodic table
what is the mass of a proton and electron
Chemical methods - Purification of organic compounds Besides these physical methods, few chemical methods have as well been utilized to separate a mixture of organic compounds.
Acetylene tetrachloride (Westron), CHCl 2 ·CHCl 2 It is as well called as sym. tetrachloroethane. It is made by the action of chlorine on acetylene in existence of a catalyst
Assainment of liquefaction of gases in degree 2 nd sem
Dislocations-Linear Defects Dislocations are abrupt alters in the regular ordering of atoms, along a line (dislocation line) in the solid. They occur in high density a
tests for the presence of iodoform
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Uses of Polyglycolic acid,Polylactic acid and Polyhydroxybutyrate PGA and PLA (90 : 10) is utilized to form absorbable structure to close an internal of external wound and has
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