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<p>ceramics that a dislocation is able to move along, which makes deformation difficult and makes the ceramic more brittle. </p>

<p>Ceramic materials generally exhibit <a href="page.php?w=ionic_bonding">ionic bonding</a>. Because of the ions' electric charge and their repulsion of like-charged ions, slip is further restricted.</p>

<p><big>Changing brittle materials</big></p>
<p>Materials can be changed to become more brittle or less brittle.</p>

<p><big>Toughening</big></p>
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