Wear properties of NiAl based materials

Jianting, Guo; Wang, Zhensheng; Sheng, Liyuan; Zhou, Lanzhang; Yuan, Chao; Chen, Zhigang; Song, Li

doi:10.1016/j.pnsc.2012.10.008

Cited by 26 publications

(23 citation statements)

References 27 publications

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“…However, the inherent shortcomings of NiAl intermetallic compounds, such as poor fracture toughness at room temperature, low ductility at ambient temperatures, and inadequate strength at elevated temperatures, limit their high temperature structural applications [6]. In order to overcome these drawbacks, the NiAl intermetallic composites using reinforcing ceramic particles (e.g., TiC, WC, TiO 2 , Al 2 O 3 , ZrO 2 , TiB 2 , and CrB 2 ) as an additive have been prepared to improve their mechanical properties and high-temperature strength [7][8][9][10][11][12][13][14][15][16][17]. Titanium diboride (TiB 2 ), due to its excellent properties such as high melting point (2900 • C), high hardness (27 GPa), and high elastic modulus (370 GPa), is particularly suitable in this respect due to its inertness towards NiAl [13].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Microhardness of Ni/Al-TiB2 Composite Coatings Prepared by Cold Spraying Combined with Postannealing Treatment

Chen

et al. 2019

Coatings

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Ni/Al-TiB2 composite powders were deposited on the surface of 316L stainless-steel substrates by cold spraying at gas temperatures of 250 and 450 °C, respectively. Then, the as-sprayed coatings were annealed at 650 °C for 10, 20, and 30 h. The experimental results showed that the average porosity of as-sprayed coating dropped from about 0.68% to 0.054% as the cold spraying gas temperature increased. The contents of Ni, Al, and TiB2 in the as-sprayed coatings were different from that of the Ni/Al-TiB2 composite powders. The main phase compositions of the as-sprayed Ni/Al-TiB2 coatings were the same as those of composite powder, consisting only of pure Ni, Al, and TiB2 phases. TiB2 as a reinforced particle in the as-sprayed coating could obviously increase the microhardness of the coatings. NiAl3 and Ni2Al3 intermetallic compounds were synthesized in situ in all of the annealed coatings, and the average contents of NiAl3 and Ni2Al3 intermetallic compounds increased as the cold spraying gas temperature increased. The distribution of TiB2 particle was changed as the annealing times increased, which changed from more comparative uniform distribution to accumulation. The average porosity of the annealed coatings increased as the annealing time increased. The microhardness of Ni/Al-TiB2 coatings annealed at 650 °C for 10 h was increased remarkably due to the reinforcement role of TiB2 particles and NiAl3 and Ni2Al3 intermetallic compounds.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Microhardness of Ni/Al-TiB2 Composite Coatings Prepared by Cold Spraying Combined with Postannealing Treatment

Chen

et al. 2019

Coatings

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“…Authors evaluated the role of silicon, chromium and nickel which were used as alloying elements [13]. Gurcan [15].…”

Section: Role Of Velocity Discontinuity Imparted By Copper and Nickelmentioning

confidence: 99%

Role of Velocity Discontinuity Imparted by Copper and Nickel Coatings of Different Thickness

Sharieff*¹,

Ranganatha²

2019

IJRTE

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In mating pairs system, the pairs will have relative motion among themselves resulting in damage of contacting surfaces. During such relative motions friction and wear occurs. Extensive research has been carried out for identifying friction and wear effects. One of the important factors is found to be discontinuity in velocity at the interacting surfaces. This discontinuity in velocity was found to have a major role in affecting coefficient of friction and wear.In the present investigation to impart velocity discontinuity copper and nickel coatings of different thickness, were coated on mild steel pin. The copper coating was incorporated by thermal spray technique and nickel coating was carried by electroplating technique. Experiments have been conducted using pin on disc test rig with speed 500 rpm, load 30 newton and sliding time 30 seconds. The shear force was monitored in personal computer and coefficient of friction was estimated. Scanning electron micrograph (SEM) and Energy dispersive analysis X-ray (EDAX) was carried out. The coefficient of friction was found to be dependent on type of coating materials. Coefficient of friction was in the range of 0.51 to 0.52 for copper coating and 0.43 to 0.46 for nickel coating. The observed features in scanning electron micrograph attribute dependency of friction coefficient on coating thickness. The energy dispersive analysis X-ray study reveals no oxidation of copper, nickel and iron.

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“…The nickel-aluminium powder, which is also called nickel aluminide, has two phases, NiAl and Ni3Al; and these phases shift with different nickel contents [15]. Generally, Ni3Al is harder and has lower thermal conductivity than NiAl [16][17][18], and it is also important to note that NiAl transforms to Ni3Al under high temperature [19]. The standard filler has a Ni-Al weight ratio of 86%-14% [5], which is typically used in aero-engines.…”

Section: Test Sample Andtest Parametersmentioning

confidence: 99%

Investigating the application of a honeycomb abradable lining in the turbine stage of an aero-engine

Zhang¹,

Marshall

2018

Tribology International

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Modern aero-engines use abradable linings to reduce axial gas leakage. In this study the wear performance of a new developed nickel superalloy honeycomb abradableliningwas investigated on a novel high-speed test rig, using in-situ measurement techniques, combined with post-test microscopy and X-ray fluorescence based elemental analysis. In particular the effect of changing the nickel-aluminide filler ratio was considered, as well as the impact of thermal ageing of the specimens. Compaction of abradable occurs, resulting in fin wear, along with high forces and temperatures. This wear mechanism is cyclic with debris ejection and sparks. Ageing of the abradable generally leads to an increase in fin wear, with the exception that in one case this lead to improved fracture of the abradable and an improved cutting performance by the fin.

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Wear properties of NiAl based materials

Cited by 26 publications

References 27 publications

Microstructure and Microhardness of Ni/Al-TiB2 Composite Coatings Prepared by Cold Spraying Combined with Postannealing Treatment

Microstructure and Microhardness of Ni/Al-TiB2 Composite Coatings Prepared by Cold Spraying Combined with Postannealing Treatment

Role of Velocity Discontinuity Imparted by Copper and Nickel Coatings of Different Thickness

Investigating the application of a honeycomb abradable lining in the turbine stage of an aero-engine

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