MICROSTRUCTURE OF INTERFACE BETWEEN Y-MODIFIED REACTIVE ION PLATED Ti(Y)N COATING AND SUBSTRATE STEEL A3

Abstract

Abstract: The fine rnicrostrueture of the Y-modified ion plated Ti(Y)N coating/substrate steel A3 system has been examined by means of TEM and microdiffraction technique.It was revealed that the interface consists of 3 sublayers,i.e.α-Fe+Y_6Fe_(23),Ti+Y+FeTi and Ti_2N+YN +Ti_xN_y.The thicknesses of them are about 200,50 and 120 nm respectively.The phases in the transition area seem to have certain orientation relations.The mechanism of interface formation has also been discussed.

Key words: Ti(Y)N coating, interface, sublayer, Y-modification

LIU Changqing YU Li YU Zhiming JIN Zhujing WU Weitao Corrosion Science Laboratory,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China. MICROSTRUCTURE OF INTERFACE BETWEEN Y-MODIFIED REACTIVE ION PLATED Ti(Y)N COATING AND SUBSTRATE STEEL A3[J]. Acta Metallurgica Sinica (English Letters), 1992, 5(1): 16-20.

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MICROSTRUCTURE OF INTERFACE BETWEEN Y-MODIFIED REACTIVE ION PLATED Ti(Y)N COATING AND SUBSTRATE STEEL A3

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