Rapid fabrication of ultra-smooth Y-TZP bioceramic surfaces by dual-axis wheel polishing: process development and tribological characterization

Lu, Ange; Shang, Zhentao; Luo, Xichun; Jin, Tan; Luo, Hu

doi:10.1016/j.jmapro.2020.04.055

Cited by 8 publications

(3 citation statements)

References 53 publications

(59 reference statements)

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“…However, producing super-flat surfaces in machining processes is difficult without leaving residual stress or scratched surfaces [11][12][13]. In order to meet the requirements of machining ultra-precise and ultra-gloss surfaces, electromechanical polishing processes can be achieved but these processes have been shown to be less effective when applied to some materials [14,15]. A method is being studied in recent years for surface finishing by elastic emission machining, but the material removal capacity of this method is not high [16,17].…”

Section: Introductionmentioning

confidence: 99%

Optimization of technological parameters when polishing sic materials by magnetic compound fluid with the straight electromagnetic yoke

Quang,

Tung

2023

Eureka: PE

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Crystallized silicon carbide (SiC) wafers are widely used in the field of integrated circuits as well as essential in the epitaxial growth of graphene and are one of the promising materials for applications in electronics at future high capacity. The surface quality of the required ultra-fine crystalline silicon wafer is the most essential factor in achieving graphene's desired electronic properties. Aiming to produce superfine surface quality SiC wafers, in this study, a new algorithm is developed to solve optimization problems with many nonlinear factors in ultra-precision machining by magnetic liquid mixture. The presented algorithm is a collective global search inspired by artificial intelligence based on the coordination of nonlinear systems occurring in machining processes. A new algorithm based on the optimization collaborative of multiple nonlinear systems (OCMNO) with the same flexibility and high convergence was established in optimizing surface quality when polishing the SiC wafers. To show the effectiveness of the proposed OCMNO algorithm, the benchmark functions were analyzed together with the established SiC wafers polishing optimization process. To give the best-machined surface quality, polishing experiments were set to find the optimal technological parameters based on a new algorithm and straight electromagnetic yoke polishing method. From the analysis and experimental results when polishing SiC wafers in an electromagnetic yoke field when using a magnetic compound fluid (MCF) with technological parameters according to the OCMNO algorithm for ultra-smooth surface quality with Ra=2.306 nm. The study aims to provide an excellent reference value in optimizing surface polishing SiC wafers, semiconductor materials, and optical devices

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Section: Introductionmentioning

confidence: 99%

Optimization of technological parameters when polishing sic materials by magnetic compound fluid with the straight electromagnetic yoke

Quang,

Tung

2023

Eureka: PE

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“…Among the existing machined surface finishing techniques, grinding or polishing by abrasive particles is commonly used, however, in machining processes, it is difficult to produce super-flat surfaces without leaving residual stress or scratched, damaged surfaces [12][13][14]. In order to meet the requirements of machining ultra-precise and ultra-gloss surfaces, electromechanical polishing processes can be achieved but these processes have been shown to be less effective when applied to some materials [15,16]. A method is being studied in recent years for surface finishing by elastic emission machining, but the material removal capacity of this method is not high [17,18].…”

Section: Introductionmentioning

confidence: 99%

Development of OCMNO algorithm applied to optimize surface quality when ultra-precise machining of SKD 61 coated Ni-P materials

2023

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In this paper, a new algorithm developing to solve optimization problems with many nonlinear factors in ultra-precision machining by magnetic liquid mixture. The presented algorithm is a collective global search inspired by artificial intelligence based on the coordination of nonlinear systems occurring in machining processes. Combining multiple nonlinear systems is established to coordinate various nonlinear objects based on simple physical techniques during machining. The ultimate aim is to create a robust optimization algorithm based on the optimization collaborative of multiple nonlinear systems (OCMNO) with the same flexibility and high convergence established in optimizing surface quality and material removal rate (MRR) when polishing the SKD61-coated Ni-P material. The benchmark functions analyzing and the established optimization polishing process SKD61-coated Ni-P material to show the effectiveness of the proposed OCMNO algorithm. Polishing experiments demonstrate the optimal technological parameters based on a new algorithm and rotary magnetic polishing method to give the best-machined surface quality. From the analysis and experiment results when polishing magnetic SKD 61 coated Ni-P materials in a rotating magnetic field when using a Magnetic Compound Fluid (MCF). The technological parameters according to the OCMNO algorithm for ultra-smooth surface quality with Ra = 1.137 nm without leaving any scratches on the after-polishing surface. The study aims to provide an excellent reference value in optimizing the surface polishing of difficult-to-machine materials, such as SKD 61 coated Ni-P material, materials in the mould industry, and magnetized materials.

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“…Nowadays, cavitation generation method mainly includes hydrodynamic cavitation (1)(2)(3)(4)(5), ultrasonic cavitation (6)(7)(8)(9) and laser-induced cavitation (10)(11)(12)(13)(14), and its application covers cleaning (15,16), surface treatment (17)(18)(19)(20)(21)(22), cavitation molding (23,24), environmental protection and renewable (25,26), etc.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Experimental Analysis of Volume Alternate Cavitation (VAC) - A new Cavitation Generation Method

Chen

Wang

et al. 2021

Preprint

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Cavitation generation methods have been applied in multifarious directions due to their diversity. And scholars have carried out numerous researches and discussions on cavitation generation methods. The purpose of this study is to explore the generating mechanism and evolution law of volumetric alternate cavitation (VAC). In the VAC, the liquid water is placed in an airtight container with variable volume. With the volume alternately changes, the liquid water inside the container continues to cavitate. In this study, the mixture turbulence model and in-cylinder dynamic grid model were used to apply computational fluid dynamics (CFD) simulation of volume alternate cavitation. In the simulation, the cloud images at 7 heights on the central axis are monitored, and the phenomenon and mechanism of height and eccentricity are analyzed detailedly. By using the method of cavitation flow visualization (CFV), the generating mechanism and evolution law of cavitation are clarified. The synergistic effects of experiments and high-speed camera capture confirm the simulation. In the experiment, the volume change stroke of the airtight container is 20 mm, the volume change frequency is 18 Hz, and the shooting frequency of the high-speed camera is set to 10000 fps. The results show that the position of occurring cavitation phenomenon has a reasonable law during the whole evolution cycle of the cavitation cloud. It is evident that a cycle of volume alternation corresponds to the generation, development and collapse stages of cavitation bubbles.

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Rapid fabrication of ultra-smooth Y-TZP bioceramic surfaces by dual-axis wheel polishing: process development and tribological characterization

Cited by 8 publications

References 53 publications

Optimization of technological parameters when polishing sic materials by magnetic compound fluid with the straight electromagnetic yoke

Optimization of technological parameters when polishing sic materials by magnetic compound fluid with the straight electromagnetic yoke

Development of OCMNO algorithm applied to optimize surface quality when ultra-precise machining of SKD 61 coated Ni-P materials

Numerical Simulation and Experimental Analysis of Volume Alternate Cavitation (VAC) - A new Cavitation Generation Method

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