Mechanical and tribological properties of Hf1-xMoxNy thin films as a function of Mo contents

Li, Hang; Li, Jianliang; Liu, Zhaoli; Huang, Jingjing; Kong, Jian; Xiong, Dangsheng

doi:10.1016/j.surfcoat.2019.06.008

Cited by 22 publications

(7 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To prolong the lifetime of these hard coatings and enhance their mechanical characteristics are essential to the development of nitride coatings, adding a second element to form a ternary TMN coating for further performance improvement is frequently proposed. Common dopping elements include transition metals, such as Cu, Ag, Hf, or W [10][11][12][13][14], and group I3-I4 species, such as B, Si, and Al [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…As compared with the binary nitrides, such as TiN, CrN, and TaN coatings, the investigation of MoN and HfN coatings are relatively limited. The MoN coating has the advantages of low friction coefficient, excellent chemical stability, and self-lubrication [7,10,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, the HfN film is featured with good adhesion, corrosion resistance, and high refractoriness [8,10,22,23]. The cubic and hexagonal structure features for MoN are analyzed by Hart and Koutná [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…In the literature, the refractory metal nitride (RMN) films are limited. Yet, several papers concerning RMNs in binary, ternary, and even multielement forms are mentioned [8][9][10]21,24,25,32]. For example, Tsai et al reports that for the (TiVCrZrHf)N coating systems, sluggish diffusion hinders grain formation and leads to an amorphous initial layer and fine grain structure in the later stage of deposition.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructure and Mechanical Properties of Co-Sputtering (Mo, Hf)N Coatings

Hsu

2022

Coatings

View full text Add to dashboard Cite

This work focused on the microstructure and mechanical properties of (Mo, Hf)N coatings deposited by radio frequency reactive magnetron co-sputtering technique with input power modulation. The coating characteristics, including indentation hardness, modulus, and tribological behavior, were discussed in terms of deposition parameter, composition, phase, and microstructure. The (Mo, Hf)N thin films were fabricated at a fixed Ar/N2 inlet gas ratio of 12/8 sccm/sccm and modulated input powers. The input power of Mo was fixed at 150 W, while that of the Hf target was managed from 25 to 200 W. The deposition rate and the Hf content of the (Mo, Hf)N coatings increased with input power. The (Mo, Hf)N ternary nitride coatings showed a polycrystalline microstructure with B1-MoN(111), β-Mo2N (112), γ-Mo2N(111), (200), and MoN2(200) phases in X-ray diffraction patterns as input power modulation were 150/25 to 150/100 W/W. The multiple phase microstructure feature and detail crystal development were demonstrated through transmission electron microscopy. According to nanoindentation and wear test results, ternary (Mo, Hf)N coatings represented more improved mechanical characteristics than the MoN and HfN binary nitride films. The 150/100 W/W deposited (Mo, Hf)N coating exhibited a highest hardness of 22.5 GPa when Hf content was at 5.6 at.%. The superior anti-wear behavior of this film with least wear damage was observed as well. The multiphase and solid-solution strengthening of the (Mo, Hf)N coatings, i.e., a microstructure feature of mixed B1-MoN, β-Mo2N, γ-Mo2N, and MoN2 phases and Hf doping in MoN, were the responsible for the superior mechanical and tribological behavior for the (Mo, Hf)N coatings.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and Mechanical Properties of Co-Sputtering (Mo, Hf)N Coatings

Hsu

2022

Coatings

View full text Add to dashboard Cite

show abstract

“…Coating techniques have been developed to protect the surfaces of materials and to enhance their chemical and mechanical properties in various fields. Metals, 1,2 metal oxides, [3][4][5] and alloys [6][7][8] have been used for various applications, such as corrosion protection, [9][10][11] surface hardening, [12][13][14] enhancement of wear characteristics, 15,16 and decorative exteriors. 17 To deposit thin films, various coating techniques such as physical vapor deposition (PVD), 18,19 chemical vapor deposition (CVD), 20,21 atomic layer deposition (ALD), [22][23][24] and electrochemical deposition (ED) 25,26 are widely used.…”

mentioning

confidence: 99%

Electrodeposition of Nickel-Tungsten Alloy with Functional Concentration Periodically Graded Material Structure for Low Stress and High Hardness

Park,

Han,

Seo

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

The nickel-tungsten alloy film was deposited using electrodeposition process. The tungsten concentration in the nickel-tungsten alloy was controlled by changing the applied current density. The surface morphology, micro-structure, internal stress, and hardness were characterized as a single-layer structure. As the tungsten content increased, the hardness increased, but micro-cracks occurred on the surface. To increase the hardness without micro-cracks, a multi-layered structure was selected. The multi-layered nickel-tungsten alloy film was deposited in two types: functional periodic materials and functional graded materials. Both multi-layered structures were deposited by changing the applied current density periodically and gradually, respectively, during the deposition process. The mechanical properties, such as internal stress and hardness of the nickel-tungsten alloy, were characterized as a function of the tungsten concentration of the nickel-tungsten alloy film. As the number of periods increased, the internal stress decreased, and micro-cracks were removed on the surface. However, the gradually varied nickel-tungsten alloy had higher internal stress than the periodically varied alloy. Similar hardness was observed because the concentration of nickel-tungsten film at the top of the multi-layered structure was the same. The study demonstrated the enhancement of mechanical properties, including low internal stress and high hardness, of concentration periodically graded nickel-tungsten alloy.

show abstract