Nitriding aluminum alloys by N-multicharged ions implantation: Correlation between surface strengthening and microstructure modifications

被引：16

作者：

Hug, E. ^{[1
]}

Thibault, S.

Chateigner, D. ^{[1
,2
]}

Maunoury, L. ^{[3
]}

机构：

[1] Univ Caen, Lab CRISMAT, CNRS, Lab Cristallog & Sci Mat,ENSICAEN, F-14050 Caen, France

[2] Univ Caen, IUT Caen, F-14050 Caen, France

[3] Grand Accelerateur Natl Ions Lourds, F-14076 Caen 05, France

来源：

SURFACE & COATINGS TECHNOLOGY | 2012年 / 206卷 / 24期

关键词：

Implantation; Aluminum Wear behavior; Aluminum nitride; Internal stresses; Mechanical properties; TRANSMISSION ELECTRON-MICROSCOPY; NITROGEN IMPLANTATION; CORROSION BEHAVIOR; PURE ALUMINUM; TEMPERATURE; ALN; HARDNESS;

D O I：

10.1016/j.surfcoat.2012.04.033

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper deals with the surface strengthening of aluminum alloys by means of a new process allowing multicharged nitrogen ion implantation. X-ray photoelectron spectroscopy, grazing-incidence X-ray diffraction and atomic force microscopy were used to study microstructural changes involved by implantation. This microstructural study revealed the formation of MN and AION gamma due to the low nitrogen concentration gradient obtained with multicharged implantation. Nanoindentation and wear tests were performed to evaluate the mechanical properties of implanted surfaces. A significant improvement of wear resistance was observed as a consequence of the nitride protective layer formation. The observed surface hardening is attributed to both AION gamma and AIN formations and to the precipitation-induced stress. 2012 Elsevier B.V. All rights reserved.

引用

页码：5028 / 5035

页数：8

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