Micro-abrasive wear resistance of CoB/Co2B coatings formed in CoCrMo alloy

Rodríguez-Castro, G.A.; Resendiz-Calderon, Cesar David; Jiménez-Tinoco, L. F.; Meneses-Amador, A.; Gallardo-Hernández, Ezequiel Alberto; Campos-Silva, I.

doi:10.1016/j.surfcoat.2015.06.081

Cited by 48 publications

(16 citation statements)

References 26 publications

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“…Stack and Mathew [ 23 ] drew maps correlating the sliding distance and normal load with the wear level regarding WC/Co coatings, concluding that grooving and rolling abrasive wear domains are not close to each other. Similar studies were carried out by Rodríguez-Castro et al [ 24 ] testing a boride coating, finding the conditions able to change the abrasive wear behavior from grooving to rolling. The abrasiveness of extremely hard coatings such as Chemical Vapor Deposition (CVD) diamond was also tested by Silva et al [ 25 ], but, in this case, the authors found that too high normal loads should not be used when using thick intermediate layers of soft materials.…”

Section: Introductionsupporting

confidence: 73%

Study on the Influence of the Ball Material on Abrasive Particles’ Dynamics in Ball-Cratering Thin Coatings Wear Tests

et al. 2021

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Micro-abrasion remains a test configuration hugely used, mainly for thin coatings. Several studies have been carried out investigating the parameters around this configuration. Recently, a new study was launched studying the behavior of different ball materials in abrasive particles’ dynamics in the contact area. This study intends to extend that study, investigating new ball materials never used so far in this test configuration. Thus, commercial balls of American Iron and Steel Institute (AISI) 52100 steel, Stainless Steel (SS) (AISI) 304 steel and Polytetrafluoroethylene (PTFE) were used under different test conditions and abrasive particles, using always the same coating for reference. Craters generated on the coated samples’ surface and tracks on the balls’ surface were carefully observed by Scanning Electron Microscopy (SEM) and 3D microscopy in order to understand the abrasive particles’ dynamics. As a softer material, more abrasive particles were entrapped on the PTFE ball’s surface, generating grooving wear on the samples. SS AISI 304 balls, being softer than the abrasive particles (diamond), also allowed particle entrapment, originating from grooving wear. AISI 52100 steel balls presented particle dynamics that are already known. Thus, this study extends the knowledge already existing, allowing to better select the ball material to be used in ball-cratering tests.

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Section: Introductionsupporting

confidence: 73%

Study on the Influence of the Ball Material on Abrasive Particles’ Dynamics in Ball-Cratering Thin Coatings Wear Tests

et al. 2021

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“…Three-body abrasive wear [1][2][3], in which abrasive move between the two mating surfaces of a friction couple, has been investigated for approximately 60 years [4] because wear and friction constitute approximately 20% of energy consumption in daily life [5,6]. The current three-body abrasive wear mechanism presented in textbooks primarily includes the indentation rolling-sliding plastic deformation theory [7,8] and indentation-cutting theory [1,4,9]. For the former, the two mating surfaces of a friction couple are both hard, whereas the indentation depths of abrasives penetrating the mating surface are relatively small.…”

Section: Introductionmentioning

confidence: 99%

Novel three-body nano-abrasive wear mechanism

Chen

2021

Friction

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Current three-body abrasive wear theories are based on a macroscale abrasive indentation process, and these theories claim that material wear cannot be achieved without damaging the hard mating surface. In this study, the process of three-body nano-abrasive wear of a system including a single crystalline silicon substrate, an amorphous silica cluster, and a polyurethane pad, based on a chemical mechanical polishing (CMP) process, is investigated via molecular dynamics simulations. The cluster slid in a suspended state in smooth regions and underwent rolling impact in the asperity regions of the silicon surface, realizing non-damaging monoatomic material removal. This proves that indentation-plowing is not necessary when performing CMP material removal. Therefore, a non-indentation rolling-sliding adhesion theory for three-body nano-abrasive wear between ultrasoft/hard mating surfaces is proposed. This wear theory not only unifies current mainstream CMP material removal theories, but also clarifies that monoatomic material wear without damage can be realized when the indentation depth is less than zero, thereby perfecting the relationship between material wear and surface damage. These results provide new understanding regarding the CMP microscopic material removal mechanism as well as new research avenues for three-body abrasive wear theory at the monoatomic scale.

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“…The process temperature is 900-1000 • C, and its duration is usually several hours. Liquid or solid media that contain and may release boron are most often used for boriding [17,18]. In [17], for AISI-1045 steel boriding, 70% Borax (Na 2 B 4 O 7 ) + 30% B 4 C was used as a liquid agent.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wear Resistance of Borided Steel C45

2020

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The wear resistance of diffusion coatings in conditions of specific pressures of 3, 7 and 10 MPa was studied. The boride coatings were prepared by means of diffusion methods using C45 steel as the substrate material. Research on the microstructure and redistribution of chemical elements on wear surface of a borided layer was carried out. It was found that the boride coatings should be used under a specific pressure of 7 MPa. It was found that the wear of friction couple coating of steel C45 under specific pressure of 3 MPa proceeds according to the oxidation wear mechanism, while under specific pressures of 7 and 10 MPa the abrasive wear prevails. The wear-induced segregation of atoms in coatings was studied using secondary mass-spectroscopy method (SIMS). Increased C, O, and B concentrations were noticed at the wear surface on depth from 50 to 2000 Å. The secondary wear-induced structure formation on the wear surface resulted in high wear resistance of diffusion borided coatings.

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Micro-abrasive wear resistance of CoB/Co2B coatings formed in CoCrMo alloy

Cited by 48 publications

References 26 publications

Study on the Influence of the Ball Material on Abrasive Particles’ Dynamics in Ball-Cratering Thin Coatings Wear Tests

Study on the Influence of the Ball Material on Abrasive Particles’ Dynamics in Ball-Cratering Thin Coatings Wear Tests

Novel three-body nano-abrasive wear mechanism

Analysis of Wear Resistance of Borided Steel C45

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