<i>In situ</i> synthesis of TiC-TiN-reinforced Fe-base plasma cladding coatings

Feng, Zaiqiang; Tang, Mingqi; Liu, Yuqiang; Yan, Zhimin; Li, Gang; Zhang, Ruizhu

doi:10.1080/02670844.2017.1349362

Cited by 20 publications

(10 citation statements)

References 31 publications

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“…Figure 4 shows the dynamic friction coefficient (COF) curves [Figure 4(a)] and average wear rates [Figure 4(b)] of the as-fabricated multilayer coating at different elevated temperatures. As shown in Figure 4(a), all curves present a remarkable difference in the running-in period [17-19]. The COF curves of 400, 450 and 500°C show a long running-in time (0–700 s) and exhibit similar ‘plateau region’ during their initial running-in periods (0–300 s).…”

Section: Resultsmentioning

confidence: 97%

Tribological performance and behaviour of CVD TiC/TiCN/TiN multilayer coating at elevated temperature

Wang

Jiang

2020

Surface Engineering

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TiC/TiCN/TiN multilayer coating was prepared on a high-speed tool steel W6Mo5Cr4V2 by chemical vapour deposition. The tribological performance and behaviour of the coating were investigated at an elevated temperature of 400-600°C. Results show that the friction coefficient of the coating first decreases from 0.39 to 0.08 and then increases from 0.08 to 0.23 with the increase in temperature, while the average wear rate increases continuously from 0.97 × 10 −13 to 2.11 × 10 −13 m 3 N −1 m −1 . The tribochemical product of Fe 2 O 3 in the tribooxidative layer (TiO 2 + Fe 2 O 3 ) could reduce the coating friction coefficient but enlarge the wear rate. As the Fe 2 O 3 component increases, the consumption of the tribo-oxidative layer accelerates gradually and the coating wear mechanism transforms from the mild oxidativeabrasive-adhesive wear to severe oxidative-adhesive wear.

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Section: Resultsmentioning

confidence: 97%

Tribological performance and behaviour of CVD TiC/TiCN/TiN multilayer coating at elevated temperature

Wang

Jiang

2020

Surface Engineering

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“…After conducting the wear test for two welding positions, weight loss for all samples were measured with the help of digital weighing scale. Wear resistance in terms of weight loss was calculated in accordance with ASTM G105 as similar approach was adopted by the previous researchers [18,19,21]. Figure 11a shows the wear scar observed after the slurry abrasive wear test for 1G sample which represents less indentation of rubber wheel on the surface.…”

Section: Slurry Abrasive Wear Characteristicsmentioning

confidence: 98%

“…As is shown in Fig. 6, Fe and Cr were core content elements for analysis since Fe content affects the outcomes of hardness and wear resistance [17,18] and Cr content affects the outcomes of sensitization that takes place during service conditions by Cr precipitation. The result proves that, Hardness could be witnessed on higher side in coating region due to decreased level of Fe content in fusion and coating zone.…”

Section: Elemental Distributionmentioning

confidence: 99%

Influence of Welding Position on Tribological Behavior of SS-309L Cladded Surface on 9Cr-1Mo Steel

Калыанкар¹,

Naik²

2021

Tribol. Ind.

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Welding position is a significant parameter for weld hardfacing operations applicable to engineering valves, coal transmission pipes in thermal power plants, mining industries, etc. Weld deposition is conducted with horizontal (1G) and vertical (3G) positions due to appropriate orientation of various engineering products. However, parameters like current, speed, travel angle, etc. are different for both welding positions. Therefore, it is required to investigate the influence of these two welding positions on tribological characteristics. In the present work, 1G and 3G weld positions are considered for SS-309L weld hardfacing on 9Cr-1Mo substrate material using flux cored arc welding (FCAW) process. Weld deposited surfaces are subjected to essential mechanical and metallurgical characterizations. Results confirm that the surface deposited using 1G position has higher slurry abrasive wear resistance (0.036 gms), lower dilution (14 %), and lower heat affected zone (HAZ) width (1.5 mm) which is significantly better than 3G position. SEM analysis shows fine elongated grains which precipitate from Cr element as nucleation site for the growth resulting in an improved eutectic matrix within fine grain structure. Wear resistance is improved in 1G position due to uniform elemental distribution of Fe and Cr observed with EDS analysis. Hence, 1G position is the best suitable position for weld hardfacing operations.

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“…Thus, CSMCs are widely used in many abrasion-resistance applications. Some common carbides used in such composites include tungsten carbide (WC) [1–4], titanium carbide [5–7], vanadium carbide [8–10], chromium carbide [11], tantalum carbide (TaC) [12,13], and niobium carbide (NbC) [14]. Among these CSMCs, TiC particle reinforced steel-iron matrix composites is currently the most widely used [5–7,15–17].…”

Section: Introductionmentioning

confidence: 99%

In situ fabricated metal-carbide with core–shell structure for high impact-toughness iron-matrix composite

Zhong

Bai

Wei

et al. 2019

Materials Science and Technology

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A series of metal-carbide (Ta–TaC, Nb–NbC and W–WC) with core–shell structure for iron-matrix composites are fabricated by in situ solid-phase diffusion. Results show that the formation of metal-carbide with a rod-shaped core–shell structure, in which the metal-rod surface was covered with a carbide shell layer, in the iron- matrix after in situ solid-phase diffusion. The TaC, NbC, and WC shell layers are in situ synthesised by the diffusion of carbon atoms from the iron-matrix onto the surface of the Ta, Nb, and W rods, respectively. Metallurgical integration occurs between metal-carbide and iron-matrix. The metal-carbide-reinforced iron-matrix composites show excellent impact resistance, and the shell-layer hardness is extremely high.

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In situ synthesis of TiC-TiN-reinforced Fe-base plasma cladding coatings

Cited by 20 publications

References 31 publications

Tribological performance and behaviour of CVD TiC/TiCN/TiN multilayer coating at elevated temperature

Tribological performance and behaviour of CVD TiC/TiCN/TiN multilayer coating at elevated temperature

Influence of Welding Position on Tribological Behavior of SS-309L Cladded Surface on 9Cr-1Mo Steel

In situ fabricated metal-carbide with core–shell structure for high impact-toughness iron-matrix composite

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