电火花沉积AlCoCrFeNi高熵合金涂层的高速摩擦磨损性能

doi:10.11896/cldb.18050104

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (2140KB)
Export: BibTeX | EndNote (RIS)

Abstract The high-speed friction and wear performance of the electrospark deposited AlCoCrFeNi high entropy alloy coating was investigated by taking conventional electroplated hard Cr coating as comparison. The nanoindentor and friction and wear testing machine were employed to test the nano-mechanical properties and friction coefficient of the coatings. Furthermore, scanning electron microscopy (SEM), transmission electron microscope (TEM), energy dispersive X-ray spectrum (EDS) and X-Ray Diffraction (XRD) were adopted to analyze the microstructure, composition and phase structure of the coatings. The results indicated that the AlCoCrFeNi coating exhibited fine grains and compact structure without cracks and consisted of BCC and FCC phases. There were an approximate 10% increase in hardness, a 8% decrease in elasticity modulus, a higher values of H/E and H³/E² of the AlCoCrFeNi coating, compared with the hard Cr coating. The steady friction coefficient of the AlCoCrFeNi coating was only 0.25—0.33, while the hard Cr coating was 0.65—0.73, when the quenched GCr15 steel ball was used as one of the friction pair under the load of 10 N, the reciprocating travel of 10 mm and the velocity of 800 r/min. AlCoCrFeNi coating showed about 41% reduction in wear rate compared with hard Cr coating. The wear mechanism of the hard Cr coating is mainly characterized as adhesive wear, and the failure mode can be attributed to spalling caused by crack propagation, whilst the wear mechanism of the AlCoCrFeNi coating primarily belongs to micro-cutting abrasive wear and oxidation wear, and the oxide film formed in the course of friction and wear contributed to the wear resistance of the AlCoCrFeNi coating. In conclusion, the AlCoCrFeNi coating presents better high-speed friction and wear performance than the hard Cr coating.

Key words： electrospark deposition high-entropy alloy AlCoCrFeNi coating hard Cr coating hardness elasticity modulus high-speed friction and wear

Published: 08 May 2019

CLC number:	TB304
	TB34

Fund:This work was financially supported by the Natural Science Foundation of Liaoning Province of China (201602643), the Open Fund of Liaoning Province Armament Science and Technology Key Laboratory of Shenyang Ligong University (4771004kfs25).

About author:: Ce’an Guo received his Ph.D. in materials from Northeastern University in July 2015. He is currently an associate professor in Shenyang Ligong University and participates in the development of new materials and process technology of weapon system, and his focus research interest is corrosion and protection of materials. In recent years, he hosted four provincial and ministe-rial-level research tasks, and published more than twenty research papers.Jian Zhang received his Ph.D. in materials from Northeastern University in May 2012. He is currently an professor in Shenyang Ligong University and participates in the development of new materials and process technology of weapon system, and his focus research interest is corrosion and protection of materials. In recent years, he hosted and completed more than ten national research tasks of military products, and published more than forty research papers. His achievements were granted National Defence Science & Technology Progress Awards, Science & Technology Progress Awards of China Ordnance Group.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	GUO Ce’an
	ZHAO Zongke
	ZHAO Shuang
	LU Fengsheng
	ZHAO Boyuan
	ZHANG Jian1

Cite this article:

GUO Ce’an,ZHAO Zongke,ZHAO Shuang, et al. High-speed Friction and Wear Performance of Electrospark Deposited AlCoCrFeNi High-entropy Alloy Coating[J]. Materials Reports, 2019, 33(9): 1462-1465.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.18050104 OR http://www.mater-rep.com/EN/Y2019/V33/I9/1462

1 Qiao J W, Wang Z, Ren L W, et al.Materials Science & Engineering A,2016,657,353.
2 Xia Z H, Zhang M, Zhang Y, et al.Intermetallics,2018,94,65.
3 Chuang M H, Tsai M H, Wang W R, et al. Acta Materialia,2011,59(16),6308.
4 Sun R W, Zhang W Q, Fu H M. Heat Treatment of Metals,2015,40(9),160(in Chinese).
孙日伟,张伟强,付华萌.金属热处理,2015,40(9,160.
5 Chen Y Y,Duval T,Hung U D,et al. Corrosion Science,2005,47(9),2257.
6 Cheng J, Liu D, Liang X, et al. Surface & Coatings Technology,2015,281(7),109.
7 Shang C, Axinte E, Sun J, et al. Materials & Design,2017,117,193.
8 Hsu W L, Murakami H, Yeh J W, et al. Surface & Coatings Technology,2017,316,71.
9 Wang Y X, Yang Y J, Yang H J, et al. Materials Chemistry & Physics,2018,210,233.
10 Jiang J B, Lian G F, Xu M S. Journal of Chongqing University of Technology (Natural Science),2015,29(1),34(in Chinese).
江吉彬,练国富,许明三.重庆理工大学学报(自然科学),2015,29(1),34.
11 Yang J B, Guo Q P, Zhao B Y, et al. Materials Review B: Research Papers,2017,31(12),35(in Chinese).
杨君宝,郭秋萍,赵博远,等.材料导报:研究篇,2017,31(12),35.
12 Hong X, Tan Y F, Wang X L, et al. Surface & Coatings Technology,2016,305,67.
13 Wang X R, Wang Z Q, Li W S, et al. Materials Letters,2017,197,143.
14 Zhang J, Han J L, Guo C A, et al. Functional Materials,2015(13),13144(in Chinese).
张健,韩继龙,郭策安,等.功能材料,2015(13),13144.
15 Buter T M, Weaver M L. Journal of Alloys & Compounds,2016,674,229.
16 Leyland A, Matthews A. Wear,2000,246(1),1.
17 Ipaz L, Caicedo J C, Esteve J, et al. Applied Surface Science,2012,258(8),3805.
18 Chen Y F, Ye W, Mao R S, et al. Journal of Chongqing University of Technology (Natural Science),2013,27(5),29(in Chinese).
陈元芳,叶伟,茆荣山,等.重庆理工大学学报(自然科学),2013,27(5),29.
19 Wang J, Chen M, Yang L, et al. Applied Surface Science,2016,366(11),245.