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Temperature (°C) 1. 2. What are the two characteristics of the component ions in crystalline ceramic materials that influence the crystal structure? What would the coordination number and coordination geometry be for a crystalline ceramic with a cation-anion radius ratio of 0.285? 3. Describe in general terms how a flexural test for ceramics is performed. 4. How do coarse and fine Pearlite differ and how is each formed? 5. Describe the two main ways to calculate the molecular weights of polymers. 7. 8. Draw the smallest repeating unit for each of the following polymers: a) PVC b) PS c) PP What are the corresponding recycling numbers for the polymers in Question 6? Nitrogen from a gaseous phase is to be diffused into pure iron at 700C. If the surface concentration is maintained at 0.1 wt% N, what will be the concentration 1 mm from the surface after 10 h? The diffusion coefficient for nitrogen in iron at 700C is 2.5 x 10-11 m²/s. Answer the following questions with reference to the Isothermal Transformation (T-T-T) Diagram for Steel shown on the next page. 9. If a sample of austenite is rapidly cooled from 800°C to 600°C, estimate how much time it would take for pearlite to begin forming. At what time would you expect that complete transformation into pearlite would occur? UNIVERSITY Prince Edward ISLAND School of Sustainable Design Engineering ENGN 2360 Assignment 4 Due: July 31, 2024 Instructor: Sheldon White Summer 2024 1400 Austenite (stable) Eutectoid temperature 700 Austenite (unstable) 600 500 400 Pearlite -50% Completion curve Completion curve (~100% pearlite) Begin curve. (~0% pearlite) 1 10 102 103 104 105 Time (s) 1200 1000 800 2 Temperature (°F)

Temperature (°C) 1. 2. What are the two characteristics of the component ions in crystalline ceramic materials that influence the crystal structure? What would the coordination number and coordination geometry be for a crystalline ceramic with a cation-anion radius ratio of 0.285? 3. Describe in general terms how a flexural test for ceramics is performed. 4. How do coarse and fine Pearlite differ and how is each formed? 5. Describe the two main ways to calculate the molecular weights of polymers. 7. 8. Draw the smallest repeating unit for each of the following polymers: a) PVC b) PS c) PP What are the corresponding recycling numbers for the polymers in Question 6? Nitrogen from a gaseous phase is to be diffused into pure iron at 700C. If the surface concentration is maintained at 0.1 wt% N, what will be the concentration 1 mm from the surface after 10 h? The diffusion coefficient for nitrogen in iron at 700C is 2.5 x 10-11 m²/s. Answer the following questions with reference to the Isothermal Transformation (T-T-T) Diagram for Steel shown on the next page. 9. If a sample of austenite is rapidly cooled from 800°C to 600°C, estimate how much time it would take for pearlite to begin forming. At what time would you expect that complete transformation into pearlite would occur? UNIVERSITY Prince Edward ISLAND School of Sustainable Design Engineering ENGN 2360 Assignment 4 Due: July 31, 2024 Instructor: Sheldon White Summer 2024 1400 Austenite (stable) Eutectoid temperature 700 Austenite (unstable) 600 500 400 Pearlite -50% Completion curve Completion curve (~100% pearlite) Begin curve. (~0% pearlite) 1 10 102 103 104 105 Time (s) 1200 1000 800 2 Temperature (°F)

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Temperature (°C) 1. 2. What are the two characteristics of the component ions in crystalline ceramic materials that influence the crystal structure? What would the coordination number and coordination geometry be for a crystalline ceramic with a cation-anion radius ratio of 0.285? 3. Describe in general terms how a flexural test for ceramics is performed. 4. How do coarse and fine Pearlite differ and how is each formed? 5. Describe the two main ways to calculate the molecular weights of polymers. 7. 8. Draw the smallest repeating unit for each of the following polymers: a) PVC b) PS c) PP What are the corresponding recycling numbers for the polymers in Question 6? Nitrogen from a gaseous phase is to be diffused into pure iron at 700C. If the surface concentration is maintained at 0.1 wt% N, what will be the concentration 1 mm from the surface after 10 h? The diffusion coefficient for nitrogen in iron at 700C is 2.5 x 10-11 m²/s. Answer the following questions with reference to the Isothermal Transformation (T-T-T) Diagram for Steel shown on the next page. 9. If a sample of austenite is rapidly cooled from 800°C to 600°C, estimate how much time it would take for pearlite to begin forming. At what time would you expect that complete transformation into pearlite would occur? UNIVERSITY Prince Edward ISLAND School of Sustainable Design Engineering ENGN 2360 Assignment 4 Due: July 31, 2024 Instructor: Sheldon White Summer 2024 1400 Austenite (stable) Eutectoid temperature 700 Austenite (unstable) 600 500 400 Pearlite -50% Completion curve Completion curve (~100% pearlite) Begin curve. (~0% pearlite) 1 10 102 103 104 105 Time (s) 1200 1000 800 2 Temperature (°F)
Transcribed Image Text:Temperature (°C) 1. 2. What are the two characteristics of the component ions in crystalline ceramic materials that influence the crystal structure? What would the coordination number and coordination geometry be for a crystalline ceramic with a cation-anion radius ratio of 0.285? 3. Describe in general terms how a flexural test for ceramics is performed. 4. How do coarse and fine Pearlite differ and how is each formed? 5. Describe the two main ways to calculate the molecular weights of polymers. 7. 8. Draw the smallest repeating unit for each of the following polymers: a) PVC b) PS c) PP What are the corresponding recycling numbers for the polymers in Question 6? Nitrogen from a gaseous phase is to be diffused into pure iron at 700C. If the surface concentration is maintained at 0.1 wt% N, what will be the concentration 1 mm from the surface after 10 h? The diffusion coefficient for nitrogen in iron at 700C is 2.5 x 10-11 m²/s. Answer the following questions with reference to the Isothermal Transformation (T-T-T) Diagram for Steel shown on the next page. 9. If a sample of austenite is rapidly cooled from 800°C to 600°C, estimate how much time it would take for pearlite to begin forming. At what time would you expect that complete transformation into pearlite would occur? UNIVERSITY Prince Edward ISLAND School of Sustainable Design Engineering ENGN 2360 Assignment 4 Due: July 31, 2024 Instructor: Sheldon White Summer 2024 1400 Austenite (stable) Eutectoid temperature 700 Austenite (unstable) 600 500 400 Pearlite -50% Completion curve Completion curve (~100% pearlite) Begin curve. (~0% pearlite) 1 10 102 103 104 105 Time (s) 1200 1000 800 2 Temperature (°F)
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