Most of corrosion-resistant metals, such as Ni, Cr, Al and Ti, are covered with their passive films, whichprotect the metal from environment-assisted degradation. However, the metals sometimes suffer localizedcorrosion, such as pitting and crevice corrosion, in the specific environments. The passive film, which alsoaffects the adhesiveness of the paint to the metal and the property of corrosion to the metal under the paint, isso thin that the detailed properties of it have still been unclear. This report aims to introduce the Point DefectModel which is one of the theories for formation and breakdown of the passive film of the metal, and proposedand developed by Macdonald and his group. In addition, this also shows the meaning of the potential scanningused in the potentiokinetic method for obtaining a breakdown potential of the film.

In the presence of DABCO- and DBU- intercalated with various size of α-zirconium phosphate（ ZrP）,the reaction of glycidyl phenyl ether（ GPE） and hexahydro-4-methylphthalic anhydride（ MHHPA） wascarried out. As the results, these intercalates displayed catalytic activities under thermal conditions and theintercalation compound with smaller ZrP（ 0.73 μm） was more active than bigger ZrP（ 1.92 μm）. The thermalstabilities of GPE - MHHPA with those catalysts at 40 ℃ for 13 days were confirmed: the conversions of GPEwith ZrP·DBU were less than 10 ％ up to 2 days. The reaction with ZrP·DABCO, the conversions of GPE wereless than 10 ％ up to 4 days. These intercalates showed thermal latency in the reaction of GPE - MHHPA.

A series of solid state network polymer electrolytes comprising segments of poly(ethylene glycol) diglycidylether (PEGDGE) and diglycidyl ethers of bisphenol-A were prepared to explore the relationships betweentheir structure and ionic conductivity. The mobility of several polymer components, including curing agents,were observed using nuclear magnetic resonance spectroscopy by varying the PEGDGE composition (30 － 60PEGDGE wt%). At comparable PEGDGE composition, the solid state network polymer electrolyte cured withhigher mobility curing agents showed higher ionic conductivity. Especially, for the network polymer electrolytecontaining poly(propylene glycol) diamine as a curing agent, we achieved high ionic conductivity (1.09 ×10^－2 mS cm^－1 at 30 °C) and mobility factor via the T₂ relaxation time transition. Moreover, a trade-off wasobserved as the storage modulus increased and the ionic conductivity decreased.