高炭素鋼のはく離接着強度に及ぼす接着剤硬化条件および試験温度の影響

抄録

Effect of hardening treatment and test temperature on adhesion T-peel strength was investigated in a S55C high carbon steel/epoxy resin adhesive system, and was discussed the relationship between the peel and tensile adhesion strength. The results obtained are as follows :
(1) Probability distribution of adhesion peel strength in both initiation and propagation for fracture was found to be followed by Weibull distribution.
(2) Peel strength obtained for various heating temperatures and its holding times, tested under 20°C, was divided into three stages in Larson-Miller parameter plot, that is, incomplete adhesion stage I of cohesive failure, suitable adhesion stage II of cohesive failure and deterioration adhesion stage III of interface failure.
(3) The test temperature dependence on peel strength having peaks was observed and the fracture mode was cohesive failure below 60°C corresponding to the temperature of a maximum strength, whereas peel fracture was occurred at interface above 60°C.
(4) There lay a positive linear correlation between peel and tensile adhesion strength.