Super-hard and tough Ta1-xWxCy films deposited by magnetron sputtering

Hu, Jiaojiao; Li, Hang; Li, Jianliang; Yan, Chengqi; Kong, Jian; Wu, Qiujie; Xiong, Dangsheng

doi:10.1016/j.surfcoat.2020.126207

Cited by 17 publications

(2 citation statements)

References 45 publications

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“…The increase in the target power radial cracks can be observed at 8 kW and part of the coating edge fell off at 10 kW; the adhesion strength was assessed as HF2 at 8 kW and 10 kW. The enhancement of coating adhesion and cohesion is mainly determined by the increase in coating H, H/E*, and H 3 /E* 2 [29]. The increase in adhesion and cohesion indicates the improved cooperative deformation between coating and softer matrix [34].…”

Section: Mechanical Properties and Adhesionmentioning

confidence: 99%

“…As the target power increases to 6.5 kW, the supply of atoms necessary for the growth of the TiN coating is optimized, leading to good film-substrate adhesion and film density (see Figures 3 and 6). However, further increasing the target power to 8 kW and 10 kW increases the tensile stress within the coating, due to the higher energy and number of sputtered atoms, which reduces the fracture toughness [29].…”

Section: Mechanical Properties and Adhesionmentioning

confidence: 99%

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Friction and Wear of Hard Yet Tough TiN Coatings Deposited Using High-Power Impulse Magnetron Sputtering

Zhou,

Ou,

et al. 2024

Coatings

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The friction and wear response of hard coatings is complex, which largely depends on a good combination of hardness and toughness, and their service life is difficult to predict. Hence, in this work, hard yet tough TiN coatings were deposited using high-power impulse magnetron sputtering at 5–10 kW. With increasing sputtering power, the coatings showed a transition in crystal texture from (200) to (111), along with a refinement in microstructure, leading to an improvement in hardness (H) of 29.8–31.2 GPa and an effective Young’s modulus (E*) of 310–365 GPa. The hard yet tough TiN coatings deposited at 6.5 kW exhibited the highest H/E* and H3/E*2 ratios of 0.097 and 0.29, respectively, as well as the highest fracture toughness of 2.1 MPa·m1/2 and elastic recovery of 42.5%. Accordingly, the coatings possessed an enhanced adhesion and cohesion, in terms of micro-scratch critical load (LC3 = 19.67 N) and HF Rockwell HF1 level. The friction and wear response of hard yet tough TiN coatings under the normal load of 1–10 N were investigated to explore their durability and predict their critical load up to failure. Wear mechanisms changed from oxidative to severe abrasive wear, with load increasing from 1 to 10 N. At 2–5 N, a combination of oxidative and abrasive wear was observed. The coatings maintained their integrity up to the critical load of 9.4 N before failure event, with a maximum wear track depth of 1.8 μm, indicating their durability under the loading conditions.

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Section: Mechanical Properties and Adhesionmentioning

confidence: 99%

Section: Mechanical Properties and Adhesionmentioning

confidence: 99%

Friction and Wear of Hard Yet Tough TiN Coatings Deposited Using High-Power Impulse Magnetron Sputtering

Zhou,

Ou,

et al. 2024

Coatings

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Study on the mechanism of rapid formation of ultra-thick tribofilm by CeO2 nano additive and ZDDP

Lei

Zhang

et al. 2022

Friction

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CeO2 nanoparticles are potential anti-wear additives because of their outstanding anti-wear and load-bearing capacity. However, the shear-sintering tribo-film formation mechanism of oxide nanoparticles limits the tribo-film formation rate and thickness greatly. In this study, by compounding with zinc dioctyl dithiophosphate (ZDDP), ultra-fine CeO2 nanoparticles modified with oleylamine (OM) can quickly form 2 µm ultra-thick tribo-film, which is 10–15 times thicker than that of ZDDP and CeO2, respectively. The ultra-thick tribo-film presents a nanocomposite structure with amorphous phosphate as binder and nano-CeO2 as filling phase, which leads to the highest loading capacity of composite additives. The results of adsorption experiments tested by dissipative quartz crystal microbalance (QCM-D) showed that the PB value of additive has nothing to do with its equilibrium adsorption mass, but is directly proportional to its adsorption rate in 10 s. The compound additive of CeO2 and ZDDP presented the co-deposition mode of ZDDP monolayer rigid adsorption and CeO2 viscoelastic adsorption on the metal surface, which showed the highest adsorption rate in 10 s. It is found that the tribo-film must have high film forming rate and wear resistance at the same time in order to achieve super thickness. Cerium phosphate was formed from ZDDP and CeO2 through tribochemistry reaction, which promotes the formation of an ultra-thick tribo-film with nanocomposite structure, which not only maintains the low friction characteristics of CeO2, but also realizes high PB and high load-carrying capacity.

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A review of advances in tribology in 2020–2021

Meng

et al. 2022

Friction

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Around 1,000 peer-reviewed papers were selected from 3,450 articles published during 2020–2021, and reviewed as the representative advances in tribology research worldwide. The survey highlights the development in lubrication, wear and surface engineering, biotribology, high temperature tribology, and computational tribology, providing a show window of the achievements of recent fundamental and application researches in the field of tribology.

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Super-hard and tough Ta1-xWxCy films deposited by magnetron sputtering

Cited by 17 publications

References 45 publications

Friction and Wear of Hard Yet Tough TiN Coatings Deposited Using High-Power Impulse Magnetron Sputtering

Friction and Wear of Hard Yet Tough TiN Coatings Deposited Using High-Power Impulse Magnetron Sputtering

Study on the mechanism of rapid formation of ultra-thick tribofilm by CeO2 nano additive and ZDDP

A review of advances in tribology in 2020–2021

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