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Consider two types of thermal barrier coatings made of Zirconia. The first A is pure Zirconia and the second B has a small % of yttrium added to it. Upon cooling a coating of either type from high temperature to room temperature, what of the following is the most likely outcome?

Consider two types of thermal barrier coatings made of Zirconia. The first A is pure Zirconia and the second B has a small % of yttrium added to it. Upon cooling a coating of either type from high temperature to room temperature, what of the following is the most likely outcome?

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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Consider two types of thermal barrier coatings made of Zirconia. The first A is pure Zirconia and the second B has a small % of yttrium added to it. Upon cooling a coating of either type from high temperature to room temperature, what of the following is the most likely outcome? Select one: b. A: stays stable; B: experiences high stress, phase transformation and undergoes cracking; A: stays stable; B: stays stable O c. A: experiences high stress, phase transformation and undergoes cracking; B: undergoes cracking and distortion d. A: experiences high stress, phase transformation and undergoes cracking; B: stays stable
Transcribed Image Text:Consider two types of thermal barrier coatings made of Zirconia. The first A is pure Zirconia and the second B has a small % of yttrium added to it. Upon cooling a coating of either type from high temperature to room temperature, what of the following is the most likely outcome? Select one: b. A: stays stable; B: experiences high stress, phase transformation and undergoes cracking; A: stays stable; B: stays stable O c. A: experiences high stress, phase transformation and undergoes cracking; B: undergoes cracking and distortion d. A: experiences high stress, phase transformation and undergoes cracking; B: stays stable
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