Improved wear resistance of TiAl composite coatings through NbC@(Ti,Nb)2AlC core-shell structure and nanoscale precipitation strengthening

Zhu, Yuming; Song, Xiaojie; Liu, Minglei; Jia, Wenchang; Yin, Zeliang; Wang, Quanzhi; Zhang, Yuhao; Jiang, Di; Song, Qiang; Cui, Hongzhi

doi:10.1016/j.vacuum.2023.112091

Cited by 6 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By measuring the wear weight The wear weight loss of coatings 1# and 2# is high, and the exfoliated hard ceramic phase with the abraded debris is compacted under the extrusion of the grinding ring. It has been speculated that these compacted layers have some protective effect on the coating, thus improving the wear resistance of the coating [27][28][29][30]. To analyze the effect of these compacted layers on the wear resistance of the coating, the friction wear test was adjusted.…”

Section: Wear Resistance Analysismentioning

confidence: 99%

Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings

Yingpeng

Wang

et al. 2023

Lubricants

View full text Add to dashboard Cite

In situ NbC-reinforced laser cladding Ni45 coatings have the advantages of high bond strengths, low dilution rates, small heat-affected zones and good wear resistance and have broad application prospects in the field of surface strengthening and repair of workpieces such as automotive molds and engine turbines. Previous studies have mostly used pure niobium powder for in situ synthesis to prepare Ni-based NbC coatings with a high production cost. In this paper, NbC was successfully synthesized in situ in Ni45 powder using inexpensive FeNb65 and Cr3C2. The prepared coating has a uniform microstructure and excellent wear resistance, and the reinforced phases are mainly NbC and Cr23C6. Coating 4# with 25 wt.% FeNb65 + Cr3C2 has the highest microhardness of 776.3HV0.2, about 1.45 times that of the Ni45 coating, and its wear resistance is 36.36 min/mg, about 60.6 times that of the Cr12MoV steel base material and about 23.76 times that of the Ni45 coating.

show abstract

Section: Wear Resistance Analysismentioning

confidence: 99%

Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings

Yingpeng

Wang

et al. 2023

Lubricants

View full text Add to dashboard Cite

show abstract

“…Niobium (Nb) is an element that is easily linked to C and/or O, forming very hard compounds. These compounds significantly enhance the mechanical and abrasive resistance of the material, especially at high working temperatures [9][10][11]. Therefore, Nb-rich compounds can be added to metal coating under harsh working conditions.…”

Section: Introductionmentioning

confidence: 99%

Impact of incorporating FeNbC into weld flux on the abrasive wear resistance of coatings produced by SAW in a microalloyed steel

Pollnow,

Cardoso,

das Neves

et al. 2024

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

Owing to the global shortage of raw materials and an increase in their prices, there is a growing demand for engineering solutions to increase the lifespan and durability of equipment and components. Therefore, this study aims to combine surface engineering and welding engineering to produce a niobium-rich coating using submerged arc welding (SAW) deposition. SAW is a cost-effective technique that allows high deposition rates and technical simplicity, which can enhance mechanical properties and resistance to abrasive wear of components. This research involves the addition of a FeNbC powder alloy in percentages of 5, 10, and 15 wt.% to a neutral commercial SAW flux, as an alternative to adding Nb to the microstructure of the deposited coating. The coating was characterized by optical microscopy to analyze the microstructure, such as the presence of phases; microhardness through a Vickers micro-durometer, and resistance to abrasive wear through the loss of mass using a rubber wheel-type abrasometer. The wear mechanisms were evaluated using scanning electron microscopy. The results showed that a Nb-rich coating can be deposited via SAW, and the coatings successfully increased microhardness by up to 110% and resistance to abrasive wear to values higher than the base metal used (microalloyed steel). The microstructure formed was rich in Fe2Nb and NbC, proving the formation of Nb-rich phases. Additionally, the mechanism of abrasive wear was predominantly plastic for the base metal and changed to micro-cutting and micro-plowing after the addition of up to 15% of FeNbC.

show abstract