Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
3. A steel plate of area 100 cm² steel is undergoing a corrosion process resulting in a weight change of 2.89 x 10-5 gm/s. The equivalent current density associated with this process is

3. A steel plate of area 100 cm² steel is undergoing a corrosion process resulting in a weight change of 2.89 x 10-5 gm/s. The equivalent current density associated with this process is

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.71P: 1.71 The thermal conductivity of silver at 212°F is 238 Btu/h ft °F. What is the conductivity in SI...
See similar textbooks
Question
Solve 3 please
**Text Transcription for Educational Website:** --- 3. A steel plate of area 100 cm² is undergoing a corrosion process resulting in a weight change of 2.89 x 10⁻⁵ gm/s. The equivalent current density associated with this process is: a. 10 mA/cm² b. 1 mA/cm² c. 100 mA/cm² d. 0.10 mA/cm² 4. The thermodynamics of a passivation process can be examined using: a. Mixed potential theory or Evan’s diagrams. b. Potential-pH or Pourbaix diagrams. c. Linear sweep voltammetry. d. The electrochemical series of reduction potentials. --- **Explanation of Concepts:** - **Current Density:** This is a measure of the electric current per unit area of cross-section. It is an important parameter in the analysis of corrosion processes. - **Passivation Process:** This refers to the phenomenon where a material becomes less affected by environmental factors due to the formation of a protective layer on its surface. **Discussion on Diagrams:** - **Evan’s Diagrams (Mixed Potential Theory):** These diagrams are used to understand the behavior of electrochemical cells, emphasizing the balance between anodic and cathodic reactions. - **Pourbaix Diagrams (Potential-pH Diagrams):** These are graphical representations that show the stability of different phases (e.g., metal, oxide, and solution species) as a function of potential and pH. - **Linear Sweep Voltammetry:** This is an electrochemical technique used to study the reactivity of substances and is helpful in investigating passivation layers. - **Electrochemical Series:** This series lists elements according to their standard electrode potentials and is useful for understanding the tendencies of different metals to corrode. These concepts and tools are crucial for analyzing and predicting the behavior of metals in corrosive environments.
Transcribed Image Text:**Text Transcription for Educational Website:** --- 3. A steel plate of area 100 cm² is undergoing a corrosion process resulting in a weight change of 2.89 x 10⁻⁵ gm/s. The equivalent current density associated with this process is: a. 10 mA/cm² b. 1 mA/cm² c. 100 mA/cm² d. 0.10 mA/cm² 4. The thermodynamics of a passivation process can be examined using: a. Mixed potential theory or Evan’s diagrams. b. Potential-pH or Pourbaix diagrams. c. Linear sweep voltammetry. d. The electrochemical series of reduction potentials. --- **Explanation of Concepts:** - **Current Density:** This is a measure of the electric current per unit area of cross-section. It is an important parameter in the analysis of corrosion processes. - **Passivation Process:** This refers to the phenomenon where a material becomes less affected by environmental factors due to the formation of a protective layer on its surface. **Discussion on Diagrams:** - **Evan’s Diagrams (Mixed Potential Theory):** These diagrams are used to understand the behavior of electrochemical cells, emphasizing the balance between anodic and cathodic reactions. - **Pourbaix Diagrams (Potential-pH Diagrams):** These are graphical representations that show the stability of different phases (e.g., metal, oxide, and solution species) as a function of potential and pH. - **Linear Sweep Voltammetry:** This is an electrochemical technique used to study the reactivity of substances and is helpful in investigating passivation layers. - **Electrochemical Series:** This series lists elements according to their standard electrode potentials and is useful for understanding the tendencies of different metals to corrode. These concepts and tools are crucial for analyzing and predicting the behavior of metals in corrosive environments.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 7 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Crystalline Imperfections
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Heat Transfer (Activate Learning wi…
Principles of Heat Transfer (Activate Learning wi…
Mechanical Engineering
ISBN:
9781305387102
Author:
Kreith, Frank; Manglik, Raj M.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS