共 36 条
Investigation on microstructures and mechanical properties of AlCrN coatings deposited on the surface of plasma nitrocarburized cool-work tool steels
被引:65
作者:
Chen, Wanglin
[1
]
Zheng, Jie
[1
]
Meng, Xianna
[2
]
Kwon, Sikchol
[1
,3
]
Zhang, Shihong
[1
]
机构:
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan City 243002, Anhui, Peoples R China
[2] Anhui Univ Technol, Sch Met Engn, Maanshan City 243002, Anhui, Peoples R China
[3] Chungbuk Natl Univ, Dept Adv Mat Engn, Chungbuk 641773, South Korea
来源:
基金:
中国国家自然科学基金;
对外科技合作项目(国际科技项目);
关键词:
Cool-work tool steel;
Multi-arc ion plating;
AlCrN coating;
Duplex coating;
Plasma nitrocarburizing;
HIGH-SPEED STEEL;
INTERFACIAL STRUCTURE;
ARC EVAPORATION;
CARBON-STEELS;
IRON NITRIDE;
THIN-FILMS;
TIN;
HARDNESS;
LAYER;
PARAMETERS;
D O I:
10.1016/j.vacuum.2015.08.021
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
AlCrN coating which has been widely applied in industrial application was produced on the surface of nitrocarburized SKD 11 cool-work tool steel by physical vapor deposition (PVD) method. The effects of nitrocarburizing pretreatment and PVD deposition temperature on microstructures, mechanical and tribological properties of the coatings were investigated. The results show that the AlCrN coating consists of an inner CrN adhesion layer with columnar growth and an outmost AlCrN work layer with planar growth, and the AlCrN coating shows a superior hardness of about 43 GPa. The nitrocarburizing pretreatment considerably improve adhesion strength, load capacity and wear resistance of duplex coated samples when compared with the single AlCrN coated samples. The improved mechanical and tribological properties are mainly related to the thicker nitrocarburizing layer and the gradient in the hardness profile of the duplex coating. In addition, the nitrocarburizing-PVD AlCrN duplex coated samples can be further enhanced by increasing deposition temperature of PVD coatings. The main wear mechanisms of duplex coated samples are oxidation wear or oxidation wear and adhesion wear, whereas the main wear mechanisms of single AlCrN coated samples are spalling and chipping wear as well as oxidation wear. (C) 2015 Elsevier Ltd. All rights reserved.
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页码:194 / 201
页数:8
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