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http://dx.doi.org/10.3795/KSME-A.2009.33.3.190

A Study on the Ultrasonic Nano Crystal Surface Modification(UNSM) Technology and It's Application  

Pyoun, Young-Sik (선문대학교 기계공학부)
Park, Jeong-Hyeon (선문대학교 기계공학부)
Cho, In-Ho ((주)디자인메카 기술개발연구소)
Kim, Chang-Sik ((주)디자인메카 기술개발연구소)
Suh, Chang-Min (경북대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.3, 2009 , pp. 190-195 More about this Journal
Abstract
All the failure in fatigue of torsion, bending and rolling contact, and in sliding wear begins mostly from surface. So much efforts have been invested to the surface technology which deal these problems during past decades, but the industrial demand keeps growing and more significant requirements are added to researchers and engineers. Nano crystal surface modification technology which makes the surface layers into nano crystalline, induces big and deep compressive residual stress, increases surface hardness, improves surface hardness, and make micro dimples structure on surface is an emerging technology which can break limits of current surface technology and relieve the burden of researchers and engineers. In this study, a nano crystal surface modification technology which is calling UNSM(Ultrasonic nano crystal surface modification) technology, is introduced and how it has been applied to industry to solve these failure problems is explained.
Keywords
UNSM(Ultrasonic Nano Crystal Surface Modification); Fatigue Strength; Wear Strength; Friction Coefficient;
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