Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 20    No. 3    March 2010

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Effect of surface nanocrystallization and PPEC time on
complex nanocrystalline hard layer fabricated by plasma electrolysis
M. ALIOFKHAZRAEI1, SH. AHANGARANI2, A. SABOUR ROUHAGHDAM1

1. Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University,
P.O. Box: 14115-143, Tehran, Iran;
2. Department of Advanced Materials and Renewable Energies,
Iranian Research Organization for Science and Technology (IROST), P.O. Box 15815-3538, Tehran, Iran

Abstract:Size distribution of nano-carbides produced by duplex treatments of surface nanocrystallization (by surface severe plastic deformation) and plasma electrolytic carburizing on CP-Ti was investigated. Skewness and kurtosis of Gussian shape distribution curves were studied and the effect of time was determined. The usage of longer time is more suitable for achieving less size of complex nano-carbides. Surface roughness of treated samples was measured. It is observed that there is an optimum level for time on surface roughness increasing (difference between two measured data).

 

Key words: surface nanocrystallization; hard layer; roughness; CP-Ti

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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