2th conferences on applications of nano technologie in sciences, engineering and Medicines- NTC 2011 , 2011-05-16

Title : ( PREPARATION OF AL2O3/CU NANOCOMPOSITE POWDER BY ELECTROLESS PLATING AND SUBSEQUENTLY SINTERING )

Authors: Hossein Beygi Nasrabadi , Seyed Abdolkarim Sajjadi , Seyed Mojtaba Zebarjad ,

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In this study, the Al2O3–Cu core-shell nanocomposite, thin metallic films coated ceramic particles, was fabricated by Electroless plating of Cu on Al2O3 particles and subsequently conventional sintering. This kind of nanocomposites can be used as the catalysts, electromagnetic wave absorbing materials, electrodes in fuel cells and etc, because of its excellent properties such as good electrical and thermal conductivities, excellent resistance to high temperature annealing, excellent corrosion and wear resistance. At first, a thin metallic film is deposited onto ceramic particles, using the Electroless deposition, in order to elaborate a composite powder, and than the coated particles were cold pressed at 100- 500 MPa and sintering was conducted at different temperature of 900 - 1100 ºC with different atmosphere (air and Argon gas). The influence of various parameter such as effects of pretreatments, PH, temperature, time and chemical composition in the plating bath, Al2O3 powder concentration and Al2O3 powder size (micron and nanosized) on the uniformity, thickness and composition of coated layer were investigated. The results show that it is possible to fabricate Cu/alumina core-shell powder materials by electroless plating technique. Also it was found that the sizes of Cu on Al2O3 particles are between several and several hundreds of nanometers, while the amount of coating on the powders as increases as temperature and PH increase.

Keywords

, Coated Al2O3, Core–shell structure, Composite powder, Electroless
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@inproceedings{paperid:1024138,
author = {Beygi Nasrabadi, Hossein and Sajjadi, Seyed Abdolkarim and Zebarjad, Seyed Mojtaba},
title = {PREPARATION OF AL2O3/CU NANOCOMPOSITE POWDER BY ELECTROLESS PLATING AND SUBSEQUENTLY SINTERING},
booktitle = {2th conferences on applications of nano technologie in sciences, engineering and Medicines- NTC 2011},
year = {2011},
location = {مشهد, IRAN},
keywords = {Coated Al2O3; Core–shell structure; Composite powder; Electroless plating},
}

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%0 Conference Proceedings
%T PREPARATION OF AL2O3/CU NANOCOMPOSITE POWDER BY ELECTROLESS PLATING AND SUBSEQUENTLY SINTERING
%A Beygi Nasrabadi, Hossein
%A Sajjadi, Seyed Abdolkarim
%A Zebarjad, Seyed Mojtaba
%J 2th conferences on applications of nano technologie in sciences, engineering and Medicines- NTC 2011
%D 2011

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