セラミックス/金属接合部の強度特性の評価

概要

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Tension tests were carried out for <Si_3>N_4/SUS304 joints at room and high temperatures. Analyses were also conducted for the same specimens using FEM to evaluate residual stresses and stress concentrations. The summaries of the results are shown in the following. (1) The maximum tensile residual stress is σ_z and exists at the same point very near the surface and joining interface, for every Cu thickness and temperature. (2) The maximum tensile stresses occurred in the ceramics/metal joints stressed in tension at room temperatures are constant independent of the middle interlayer thicknesses. The joint strengths are determined by residual stresses and stress concentrations. (3) The maximum tensile stresses in the ceramics/metal joints stressed in tension at high temperatures decrease with increasing temperatures. Therefore, the joint strengths are determined by residual stresses, stress concentrations and decrease of strength accompanied by increase of temperatures.
一般社団法人日本機械学会の論文
1991-09-25