Ceramic Young’s modulus

Young s Modulus of Ceramics Young s Modulus of Glass... 

Young s modulus for [CERAMICS - TffiCHANICAL PROPERTIES AND BEHAVIOR] (Vol 5)... 

So ceramics, at room temperature, generally have a very large lattice resistance. The stress required to make dislocations move is a large fraction of Young s modulus typically, around E/30, compared with E/10 or less for the soft metals like copper or... 

Estimate the thermal shock resistance AT for the ceramics listed in Table 15.7. Use the data for Young s modulus E, modulus of rupture c, and thermal expansion coefficient a given in Table 15.7. How well do your calculated estimates of AT agree with the values given for AT in Table 15.7 ... 

Bioactive ceramics have already played an important role in bone repair in the clinical fields because of their ability to bond to living bone. However, the use of these bioactive ceramics is limited because of their brittleness and higher Young s modulus than bone. The combination of ceramic and organic components provides us with a design for novel tissue-repairing materials. The establishment of these techniques promises a novel bone repairing material. 

Fig. 6.4.1. Young s modulus and rupture strength for corundum ceramics. (After Rysh-kevitch, 1960)...

Table 1.4 reports values of the modulus of elasticity, or Young s modulus. This is another mechanical property which represents the stiffness of the material, or its resistance to elastic strain. More precisely, Young s modulus is the stress required to produce a unit strain by changing sample length. Table 1.4 shows that the modulus is considerably higher in the carbides and nitrides than in the metals, with values resembling those of the ceramic materials. Diamond, again, is special. 

It is well known that the Young s modulus of a composite can be calculated by the rule of mixtures for long-fibre reinforced material. In the case of whiskers, the rule of mixture is also applied to estimate the change of modulus (conventionally, reinforcements are added to improve the stiffness of a material, though for ceramic matrix composites this is not always the primary concern). 

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