MODIFICATION OF SURFACE MECHANICAL PROPERTIES OF POLYCARBONATE BY B+ AND O+ IONS IMPLANTATION

Abstract

Abstract: By implanting B+ and O+ ions respectively into polycarbonate (PC) plates, the sur-face mechanical properties of PC have been improved. Measurement by Nano IndenterⅡ showed that the hardness of samples increased 7-25 times than that before implan-tation; and the modulus of elasticity raised 2-5 times. The wear-resistance was testedby ball crusher; the width and depth of the wear-streak decreased by 1/3-1/2 or evenmore. The structure, deformation and appearance were analyzed by using Micro-FTIR Spectra, ESCA method and the steps instrument. These analyses showed thatthe structure of PC had been modified: a series of new cross-linking yielded, it de-pends on the Linear Energy Transition (LET) of implanted ions in the high polymercompounds.

Key words: polycarbonate, ion implantation, surface modification

S.D.Yao, C.Sun, S.Q.Zhou, C.C.Sun. MODIFICATION OF SURFACE MECHANICAL PROPERTIES OF POLYCARBONATE BY B+ AND O+ IONS IMPLANTATION[J]. Acta Metallurgica Sinica (English Letters), 2002, 15(1): 33-38 .

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MODIFICATION OF SURFACE MECHANICAL PROPERTIES OF POLYCARBONATE BY B+ AND O+ IONS IMPLANTATION

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