Wear properties of cast vs plasma‐sprayed Laves intermetallic alloys

Diamond-like carbon film (DLC) with an interlayer of plasma sprayed tungsten-carbide (WC) was prepared on an aluminum alloy substrate (A5052) by a hybrid process of plasma-based ion implantation and deposition using hydrocarbon gas. Typical thicknesses of DLC and WC films were 1 μm and 100 μm, respectively. The hardness and friction coefficient of DLC were typically 15 GPa and 0.15, respectively. The durability of DLC/WC/A5052 system was evaluated from the measurement of the friction coefficient by a ball-on-disk friction tester in which the loaded ball was drawn repeatedly across a sample and the load was increased with each traverse. For the DLC/A5052 system, which has no WC interlayer, the DLC film was broken quickly because of distortion of the substrate. For the DLC/WC/A5052 system, on the other hand, the DLC film was excellent in durability for long running. The wear rate of rubber rotor to the metal rotor was measured by a roller-pitching-type wear testing machine, showing large reduction in wear rate using DLC-coated metal rotor.

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Evaluation of the wear properties of dual two-phase Ni3Al/Ni3V intermetallic alloys

Tribology International ◽

10.1016/j.triboint.2013.05.016 ◽

2013 ◽

Vol 66 ◽

pp. 234-240 ◽

Cited By ~ 6

Author(s):

Sanat Wagle ◽

Yasuyuki Kaneno ◽

Rokuro Nishimura ◽

Takayuki Takasugi

Keyword(s):

Intermetallic Alloys ◽

Wear Properties ◽

Two Phase

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Laser-alloying of a plasma-sprayed WC/Co layer to enhance wear properties

Surface and Coatings Technology ◽

10.1016/0257-8972(90)90123-t ◽

1990 ◽

Vol 42 (2) ◽

pp. 175-186 ◽

Cited By ~ 14

Author(s):

M. Boas ◽

M. Bamberger ◽

G. Revez

Keyword(s):

Laser Alloying ◽

Wear Properties ◽

Plasma Sprayed

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Sliding Wear Characteristics of Plasma Sprayed 8%Y2O3-Zr Coating for Post-Spray Heat Treatment

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.324-325.1139 ◽

2006 ◽

Vol 324-325 ◽

pp. 1139-1142

Author(s):

Young Hun Chae ◽

Min Soo Suh ◽

Seock Sam Kim

Keyword(s):

Heat Treatment ◽

Residual Stress ◽

Diffraction Method ◽

Treatment Temperature ◽

Zirconia Coating ◽

X Ray Diffraction ◽

Wear Properties ◽

Wear Characteristics ◽

Plasma Sprayed ◽

Post Spray Heat Treatment

The purpose of this study is to investigate the wear characteristics of yttria-stabilized zirconia coating as a function of effect on post-spray heat treatment. We concerned that the residual stress is due to during cooling from a high deposition temperature. We will focus on the tribological wear performance as a magnitude of residual stress. The effect of residual stress as post-spay heat treatment temperature will be discussed. The plasma-sprayed 8%Y2O3-Zirconia coating is studied to know the relationship between phase transformations and wear properties after post-spray heat treatment. Wear tests is carried out with ball on disk type on 50 N, 70 N, 90 N under room temperature. The transformation of phase and magnitude of residual stress are measured by x-ray diffraction method (XRD). Tribological characteristics and wear mechanism for post-spray heat treatment is observed by SEM.

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Effect of Ni/MoS2 Addition on Microstructure and Properties of Supersonic Plasma-Sprayed Ni-Based Composite Coatings

Materials Science ◽

10.5755/j02.ms.29299 ◽

2021 ◽

Author(s):

Xinsheng WANG ◽

Wenbin HE ◽

Junjian HOU ◽

Kun LIU ◽

Xihao YAN

Keyword(s):

Friction And Wear ◽

Composite Coatings ◽

Tool Material ◽

Friction Reduction ◽

Fatigue Performance ◽

Fatigue Properties ◽

Wear Properties ◽

Wear Performance ◽

Supersonic Plasma ◽

Plasma Sprayed

Abnormal tool wear is a significant problem encountered in machining. MoS2 has the function of friction reduction; thus, to mitigate friction, two Ni-based coatings, Ni60 and Ni60 + 15 wt.% Ni/MoS2, were obtained on tungsten steel using supersonic plasma technology. The microstructure, phase structure, microhardness, fatigue properties, and friction and wear properties of the two coatings were characterized. The results show that the two plasma-sprayed Ni-based coatings have desirable structures. The addition of Ni-coated MoS2 can effectively improve the hardness of the coatings, with values reaching as high as 735 HV. The speed of rotation of the friction ball was set as 200 r/min, and the cutting force was 201.6 N. The fatigue performance as well as the friction and wear performance of the coating are simulated using ANSYS. The fatigue performance is improved by 12.6 % after adding 15 wt.% Ni/MoS2, and the friction system of the coating becomes stable after 25 min of contact. The addition of 15 wt.% Ni/MoS2 can effectively improve the performance of the tool material.

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Wear Properties of WC/Co Coatings with Plasma and High Velocity Oxyfuel Spraying

Thermal Spray 1998: Proceedings from the International Thermal Spray Conference ◽

10.31399/asm.cp.itsc1998p0281 ◽

1998 ◽

Author(s):

T. Akasawa ◽

K. Ai

Keyword(s):

High Velocity ◽

Material Removal ◽

Sliding Wear ◽

Substrate Surface ◽

Wear Properties ◽

Hvof Spraying ◽

Plasma Sprayed Coatings ◽

Plasma Sprayed ◽

Steel Substrates ◽

Sprayed Coatings

Abstract A tungsten carbide/cobalt hard coating was deposited on steel substrates using plasma-arc and high velocity oxyfuel flame (HVOF) spraying. The characteristics of the coatings made by the two spraying methods were evaluated under identical conditions. The microstructure and the chemical composition ofthe coatings were different depending on the powderheating temperature and the velocity of particles. The sliding wear properties of the coatings against hardened steel at high sliding speeds showed different tendencies from those at low speeds. The plasma sprayed coatings resulted in better abrasive wear properties than HVOF coatings did. Material removal by solid particle erosion depended on the striking angle ofparticles on the substrate surface but there are no clear differences in wear properties between the two coatings.

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