14 Which one below is not true formechanical properties of ceramics? *The fracture strength increases withdecreasing specimen size because asspecimen size decreases, the probablyof the existence of a flaw of that iscapable of initiating a crack diminishes.Crystalline ceramics are harder yetmore brittle than metals because they(ceramics) have fewer slip systems,and, therefore, dislocation motion ishighly restricted.Any residual porosity remained inceramic samples due to powderprocessing techniques has a superiorinfluence on the mechanical propertiesas they reduce the cross-sectional areaand act as stress concentrators Crystalline ceramics are harder yetmore brittle than metals because they(ceramics) have fewer slip systems,and, therefore, dislocation motion ishighly restricted.Any residual porosity remained inceramic samples due to powderprocessing techniques has a superiorinfluence on the mechanical propertiesas they reduce the cross-sectional areaand act as stress concentrators.There may be significant scatter in thefracture strength for some givenceramic material because the fracturestrength depends on the probability ofthe existence of a flaw that is capable cinitiating a crack; this probability variesfrom specimen to specimen of thesame material.

The statement not correct is (a) As the fracture strength does not increase with decrease in…

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Which one below is not true for mechanical properties of ceramics? The fracture strength increases with

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Which one below is not true for
mechanical properties of ceramics? *
The fracture strength increases with
decreasing specimen size because as
specimen size decreases, the probably
of the existence of a flaw of that is
capable of initiating a crack diminishes.
Crystalline ceramics are harder yet
more brittle than metals because they
(ceramics) have fewer slip systems,
and, therefore, dislocation motion is
highly restricted.
Any residual porosity remained in
ceramic samples due to powder
processing techniques has a superior
influence on the mechanical properties
as they reduce the cross-sectional area
and act as stress concentrators

Crystalline ceramics are harder yet
more brittle than metals because they
(ceramics) have fewer slip systems,
and, therefore, dislocation motion is
highly restricted.
Any residual porosity remained in
ceramic samples due to powder
processing techniques has a superior
influence on the mechanical properties
as they reduce the cross-sectional area
and act as stress concentrators.
There may be significant scatter in the
fracture strength for some given
ceramic material because the fracture
strength depends on the probability of
the existence of a flaw that is capable c
initiating a crack; this probability varies
from specimen to specimen of the
same material.

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