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Question 36745

posted 1 years ago

Shortly explain the process called vulcanization with reference to changes in materials properties and molecular structure.(10 Marks)

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Question 36740

posted 1 years ago

a) Show by providing required calculation for a given perfect grystall of a BCCStructure's and atomic weight 55.86 u.
i.which one from the selected set of planes (111), (232), (321), (433) is preferrable for dislocations movement?(10 Marks)
ii.for a preffarable slip plane (the answer of the question a(i)) an interpalanar distance is 1.73 Angstroms. Calculate density of the given crystalline material.(10 Marks)

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Question 36743

posted 1 years ago

A ceramic material with a cubic unit cell structure and formula AX is made from cation element (atomic radius of 2.32 Angstroms) and anion component(atomic radius of 2.66 Angstroms). Cation element standard atomic weight is132.90545 and an anion element standard atomic weight is 35.45.Calculate theoretical density of this ceramic material.(10 Marks)

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Question 36744

posted 1 years ago

Referring to the provided below simplified Iron-carbon phase diagram graphically work out:
I.What phase or phases exist in an alloy of 3 wt% C in Fe at 1200°C.
I.Phase compositions in an alloy of 3 wt% C in Fe at 1200°C.
II.Phases amount for an alloy of 3 wt% C in Fe at 1200°C.

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Question 36742

posted 1 years ago

c) On the provided below drawings build the structure in accordance to the given Miller indices.

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Question 36741

posted 1 years ago

b) In you own words shortly explain a process of a multigrain crystalline material formation during cooling from a liquid phase(10Marks)
and explain why smaller grain size is profitable for improvement of hardness and strength material's properties(5 Marks)

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Question 36844

posted 1 years ago

b) In you own words shortly explain a process of a multigrain crystalline material formation during cooling from a liquid phase(10Marks)
and explain why smaller grain size is profitable for improvement of hardness and strength material's properties(5 Marks)

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Question 36845

posted 1 years ago

c) On the provided below drawings build the structure in accordance to the given Miller indices.

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Question 36846

posted 1 years ago

d) A ceramic material with a cubic unit cell structure and formula AX is made from cation element (atomic radius of 2.32 Angstroms) and anion component(atomic radius of 2.66 Angstroms). Cation element standard atomic weight is132.90545 and an anion element standard atomic weight is 35.45.Calculate theoretical density of this ceramic material.(10 Marks)

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Question 36848

posted 1 years ago

f) Shortly explain the process called vulcanization with reference to changes in materials properties and molecular structure.(10 Marks)

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