23. Which of the following plot gives Ellingham diagram
Answers
Explanation:
An Ellingham diagram is a graph showing the temperature dependence of the stability for compounds. This analysis is usually used to evaluate the ease of reduction of metal oxides and sulfides. These diagrams were first constructed by Harold Ellingham in 1944.
Answer:
Ellingham diagrams can be very useful in the trouble shooting of heat treatment problems related to the use of protective atmospheres especially for determining if a particular atmosphere is oxidising or reducing to the metal or alloy in question. However, use without understanding can lead to incorrect conclusions. It is important to understand that the diagram relates to the equilibrium condition and takes no account of kinetics. It also assumes that there is sufficient oxidising species present for the reaction to continue. How these properties can affect the interpretation of results is illustrated by some industrial examples.
Keywords: Atmospheres, Oxidation, Ellingham diagrams