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http://dx.doi.org/10.4313/JKEM.2016.29.4.247

A Study on the Color Granite Fabrication by Bias Enhancement Method  

Park, Jong Kug (Department of Electrical Engineering, Hanbat National University)
Shin, Hong-Jik (Department of Electrical Engineering, Hanbat National University)
Choi, Won Seok (Department of Electrical Engineering, Hanbat National University)
Han, Jae Chan (ILSOM Co., Ltd.)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.4, 2016 , pp. 247-249 More about this Journal
Abstract
In this study, we investigated the color change of the normal light gray granite as the high value color granite. By coating the metal catalyst liquid on the surface of granite stone, the metal particles were penetrated into the granite and the color of granite was changed permanently through the annealing treatment. To increase penetration depth into the granite, we used DC (direct current) bias. Two kinds of bias were used such as DC bias and pulse DC bias. And the penetration time was changed as 30 and 60 min. In all cases, the color granite were successfully obtained. Regardless of the catalyst reaction time, the penetration depth was increased by using the bias treatment. We obtained a penetration depth of 21 mm with the DC pulse bias during 60 min.
Keywords
Granite; Color stone; Electric field; DC bias; Metal nano-particle;
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