Microstructures and mechanical properties of nitrided TiAlN coatings on H13 steel

被引：0
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作者：
机构：
[1] Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan
[2] Institute of Materials Engineering, Ningbo University of Technology, Ningbo
来源：
Liu, Xiaoping | 1600年 / Science Press卷 / 34期
关键词：
H13; steel; Load-carrying capacity; Plasma nitriding; TiAlN; TiAlN coating;
D O I：
10.13922/j.cnki.cjovst.2014.09.12
中图分类号：
学科分类号：
摘要：
The TiAlN coatings were deposited by closed field unbalanced magnetron sputterin g on substrate of plasma-nitrided H13 steel. The impacts of the coating condition s, the surface compactness of substrate in particular, on the microstructures and mechanical properties of the coatings were evaluated with scanning electron microscopy, metallurgical microscope, and conventional mechanical probes. The resu lts show that removal of the top layers of the nitrided H13 steel substrate by a n abrasive polishing significantly improves the surface compactness, interfacial adhesion, and mechanical properties of the TiAlN coatings, possibly because of the high densities of defects and pores on the rough loose nitrided surfaces and be cause of formation of soft nitrides in nitriding. The TiAlN coatings, deposited on well-polished H13 steel substrate displayed much improved surface hardness, inc reased wear-resistance, and enhanced interfacial adhesion. ©, 2014, Science Press. All right reserved.
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页码：943 / 949
页数：6
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