Abstract
A series of AISI 1020 steel cylindrical samples with different heights
were simultaneously nitrided in cathodic cage plasma nitriding. In this
technique, the samples are placed under a floating potential inside a
cage in which the cathodic potential is applied. A systematic study of
the nitriding temperature variation effects was carried out in order to
evaluate the efficiency of such a technique over the uniformity of the
formed layers. The samples were characterized by optical microscopy,
X-ray diffraction and microhardness measurement. The results were
compared with those ones obtained in the ionic nitriding, and was
verified that the samples nitrided by this conventional technique
presents less uniformity than the ones treated through this new
technique. (C) 2007 Elsevier B.V. All rights reserved.
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