• Kraleva, I.
• Aldrian, F.
• Morrell, R.
• Danzer, R.
• Supancic, P.
• Bermejo, Raúl

Abstract

<p>Low Temperature Co-fired Ceramics (LTCCsare layered ceramic based components, which consist of a complex three-dimensional micro-network of metal structures embedded within a glass-ceramic substrate. In many cases, LTCC end components are exposed to mechanical stresses, which may yield different types of failure coming from different parts within the component. In this work, the mechanical strength of LTCCs has been investigated under biaxial loading. The influence of the internal architectures of the LTCCs on the strength of the component has been assessed in specimens with different features located at the centre of its potential tensile surface (e.g. metal pad, ceramic, metal via. Results have been evaluated using Weibull statistics. The crack propagation behaviour during fracture has been examined on broken specimens by means of fractography. The strength results and fractographic analyses revealed a significant different strength values between the tested sets and a different crack path during fracture depending on the inner architecture within the region of maximum stress.</p>

Topics

• surface
• glass
• glass
• crack
• strength
• layered
• ceramic
• fractography