引張せん断試験による異なる表面性状の純チタンと高密度ポリエチレンの接合強度評価

抄録

In order to evaluate the joint strength between pure titanium and high-density polyethylene (HDPE), pairs of pure titanium plates with different surface roughness by polishing and pairs of pure titanium plates with KURACERA treatment were prepared. They were bonded with an HDPE sheet and subjected to tensile shear test. Each specimen was examined in terms of surface roughness and fracture morphology. As a result, it was found that there was a preferable range of surface roughness for paper polished specimens in which the joint strength was maximum due to large anchor effect, and KURACERA treatment significantly increased the joint strength. Cohesive fracture occurred in the specimens which showed relatively high joint strength, and large area of interfacial fracture or peeling was observed in the specimen with low joint strength. The joint strength of the KURACERA treated specimens was higher than that of the paper polished specimens. This may be because the surface geometry of KURACERA film was appropriate for the bonding.