Evaluation of plasma nitriding process in the wear resistance of 7075 aluminum alloy
Maria Gabriela Galvão Camarinha; Leticia Oliveira Rocha; Miguel Justino Ribeiro Barboza; Gislene Valdete Martins; Marcos Massi; Argemiro Soares Silva; Douglas Marcel Gonçalves Leite; Danieli Aparecida Pereira Reis
Abstract
AlZnMgCu alloys are widely used in aerospace industry owing to their high mechanical strength, low density and good formability. However, these alloys have low hardness surface and chemical stability. The plasma nitriding is an alternative process of raising the tribological behavior of the materials. Thus, the main purpose of this paper is to investigate its effect in wear resistance of 7075 aluminum alloy. The 7075 – T6 aluminum alloy were nitrided via direct current plasma at temperatures ranging from 300 to 450 °C and pressure ranging from 0.6 to 0.9 Torr. The influence of nitriding process parameters such as gas mixture, pressure, temperature, and treatment time on the characteristic of nitrided layer were analyzed using X-ray diffraction (XDR), mechanical profilometry and scratch test. The results showed that aluminium nitride (AIN) layers covered totally the substrates, and suggest that, among all treatment conditions explored in this work, the nitriding condition at 450 °C, 0.9 Torr, for 180 minutes was the most satisfactory, because the layer produced is less roughness and presents lower friction coefficient and higher critical load (LC).
Keywords
Referências
1 Savonov GS, Camarinha MGG, Rocha LO, Barboza MJR, Martins GV, Reis DAP. Study of the influence or the RRA thermal treatment and plasma nitriding on corrosion behavior of 7075-T6 aluminum alloy. Surface and Coatings Technology. 2019;374:736-744. http://doi.org/10.1016/j.surfcoat.2019.04.095.
2 Bao L, Li K, Zheng J, Zhang Y, Zhan K, Yang Z, et al. Surface characteristics and stress corrosion behavior of AA 7075-T6 aluminum alloys after different shot peening processes. Surface and Coatings Technology. 2022;440:128481. http://doi.org/10.1016/j.surfcoat.2022.128481.
3 Moniz BJ. Metallurgy. Illinois: American Technical Publishers; 2007.
4 Rocha LO, Camarinha MGG, Martins GV, Çaha I, Alves A, Takahashi RJ, et al. Corrosion and tribocorrosion behavior of plasma nitrided AA7075 - T651. Tecnologica em Metalurgia, Materiais e Mineração. 2023;20:e2866. http://doi.org/10.4322/2176-1523.20232866.
5 Camarinha MGG, Campanelli LC, Barboza MJR, Reis L, Couto AA, Reis DAP. Fatigue behavior of notched and unnotched 7075-T6 aluminum alloy subjected to retrogression and re-aging (RRA) heat treatment and plasma nitriding. Theoretical and Applied Fracture Mechanics. 2023;127:104051. http://doi.org/10.1016/j. tafmec.2023.104051. 6 Moradshahi M, Tavakoli T, Amiri S, Shayeganmehr S. Plasma nitriding of Al alloys by DC glow discharge. Surface and Coatings Technology. 2006;201(3-4):567-574. http://doi.org/10.1016/j.surfcoat.2005.12.002.
7 Renevier N, Czerwiec T, Billard A, von Stebut J, Michel H. A way to decrease the nitriding temperature of aluminium: the low-pressure arc-assisted nitriding process. Surface and Coatings Technology. 1999;116-119:380- 385. http://doi.org/10.1016/S0257-8972(99)00209-1.
8 Chen HY, Stock HR, Mayr P. Plasma-assisted nitriding of aluminium. Surface and Coatings Technology. 1994;64(3):139-147. http://doi.org/10.1016/0257-8972(94)90100-7.
9 Lide DR. CRC handbook of chemistry and physics. Hoboken: CRC Press; 1991. 72 p.
10 Arai T, Fujita H, Tachikawa H. Ion nitriding of aluminum and aluminum alloy. In: Proceedings of the 1st International Conference on Ion Nitriding; 1986; Cleveland, OH, USA. Materials Park: ASM International; 1986. p. 37-41.
11 Visuttipitukul P, Aizawa T, Kuwahara H. Advanced plasma nitriding for aluminum and aluminum alloys. Materials Transactions. 2003;44(12):2695-2700. http://doi.org/10.2320/matertrans.44.2695.
12 Nass KCF, Radi PA, Leite DMG, Massi M, Silva AS So, Dutra RCL, et al. Tribomechanical and structural properties of a-SiC:H films deposited using liquid precursors on titanium alloy. Surface and Coatings Technology. 2015;284:240-246. http://doi.org/10.1016/j.surfcoat.2015.06.080.
13 Yazdani A, Soltanieh M, Aghajani H. Active screen plasma nitriding of Al using an iron cage: characterization and evaluation. Vacuum. 2015;122:127-134. http://doi.org/10.1016/j.vacuum.2015.09.018.
14 Gredelj S, Gerson AR, Kumar S, Cavallaro GP. Characterization of aluminium surfaces with and without plasma nitriding by X-ray photoelectron spectroscopy. Applied Surface Science. 2001;174(3-4):240-250. http://doi. org/10.1016/S0169-4332(01)00169-6.
15 Shim YK, Kim Y-K, Lee KH, Han S. The properties of AlN prepared by plasma nitriding and plasma source ion implantation techniques. Surface and Coatings Technology. 2000;131(1-3):345-349. http://doi.org/10.1016/S0257- 8972(00)00807-0.
16 Gredej S, Gerson AR, Kumar S, Cavallaro GP. Inductively coupled plasma nitriding of aluminium. Applied Surface Science. 2002;199(1-4):183-194. http://doi.org/10.1016/S0169-4332(02)00766-3.
17 Schoser S, Bräuchle G, Forget J, Kohlhof K, Weber T, Voigt J, et al. XPS investigation of AlN formation in aluminum alloys using plasma source ion implantation. Surface and Coatings Technology. 1998;103-104:222-226. http://doi.org/10.1016/S0257-8972(98)00397-1.
18 Guzman L, Bonini G, Adami M, Ossi PM, Miotello A, Vittori-Antisari M, et al. Mechanical behaviour of nitrogen-implanted aluminium alloys. Surface and Coatings Technology. 1996;83(1-3):284-289. http://doi. org/10.1016/0257-8972(95)02795-5.
19 Burnett PJ, Rickerby DS. The scratch adhesion test: an elastic-plastic indentation analysis. Thin Solid Films. 1988;157(2):233-254. http://doi.org/10.1016/0040-6090(88)90006-5.
Submetido em:
08/11/2023
Aceito em:
24/03/2024
Facebook
Google+
Twitter
LinkedIn
Mendeley
StumbleUpon
CiteULike
Reddit
Email