Resumo

SEONG-JIN, Hwang; BYUNG HAE, Jung  e  HYUNG SUN, Kim. Prediction of mechanical properties of a minute electronic device with porous ceramic. Rev. mex. fis. [online]. 2007, vol.53, suppl.1, pp.13-16. ISSN 0035-001X.

It is difficult to measure the mechanical properties of the barrier rib materials in PDP (plasma display panel), which is a composite material reinforced by a glass matrix with rigid fillers. The purpose of this paper is to describe by using indentation technology, the method of evaluating the mechanical properties of two types of tiny bulk-dense, porous materials. In this work, the elastic constants and hardness of two types of barrier ribs were measured by Berkovich nanoindentation. As a result, cracks appeared around the load of 1345mN for the dense type of rib, while porous ribs endured up to 2427mN without any crack formation. Since the mechanical properties of rib' composites are closely related to porosity, an empirical relationship of hardness, elastic constant and strength versus porosity would review the mechanical properties of commercial ribs for a certain range of index, provided the porosity of the material is known. Thus, we suggest that the mechanical properties obtained by a nanoindenter can be used to evaluate the reliability of minute electronic devices.

Palavras-chave : Nanoindentation; mechanical properties; elastic constant; hardness; porosity.

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