Optimized pre-thinning procedures of ion-beam thinning for TEM sample preparation by magnetorheological polishing

Luo, Hu; Yin, Shu; Zhang, Hang; Liu, Chunhui; Tang, Qingchun; Guo, Meijian

doi:10.1016/j.ultramic.2017.05.016

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…Unlike conventional processes, the non-conventional finishing processes have major advantages in that they use the extremely low normal force with small cuts produced by micro abrasive tools, which enables the production of a superior surface finish and a damage-free surface [ 75 ]. Additionally, these processes can also be applied to the finish of both large and micro-scale materials [ 16 , 76 , 77 ].…”

Section: Non-conventional Finishing Processesmentioning

confidence: 99%

A Review on Surface Finishing Techniques for Difficult-to-Machine Ceramics by Non-Conventional Finishing Processes

et al. 2022

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Ceramics are advanced engineering materials in which have been broadly used in numerous industries due to their superior mechanical and physical properties. For application, the industries require that the ceramic products have high-quality surface finishes, high dimensional accuracy, and clean surfaces to prevent and minimize thermal contact, adhesion, friction, and wear. Ceramics have been classified as difficult-to-machine materials owing to their high hardness, and brittleness. Thus, it is extremely difficult to process them with conventional finishing processes. In this review, trends in the development of non-conventional finishing processes for the surface finishing of difficult-to-machine ceramics are discussed and compared to better comprehend the key finishing capabilities and limitations of each process on improvements in terms of surface roughness. In addition, the future direction of non-conventional finishing processes is introduced. This review will be helpful to many researchers and academicians for carrying out additional research related to the surface finishing techniques of ceramics for applications in various fields.

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Section: Non-conventional Finishing Processesmentioning

confidence: 99%

A Review on Surface Finishing Techniques for Difficult-to-Machine Ceramics by Non-Conventional Finishing Processes

et al. 2022

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“…Magnetorheological finishing (MRF) forms by mixing a carbonyl iron particle (CIP) and abrasive particle (AP) with a carrier liquid to form a flexible polishing tool [9][10][11]. The MRF polishing tool works like Newton liquid in the absence of a magnetic field.…”

Section: Introductionmentioning

confidence: 99%

A new environment-friendly magnetorheological finishing and fuzzy grey relation analysis in Ti-6Al-4V alloy polishing

2022

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In this study, a naturally sourced cutting oil mixture using for the magnetorheological finishing (MRF) as an environmentally friendly carrier liquid. In addition, fuzzy grey relation analysis has been developed to predict and give optimal cutting parameters, the main factors affecting surface quality and material removal rate (MRR) identified. Experimental polishing procedures Ti-6Al-4V alloy were performed to confirm the availability of MRF models of the surface quality and MRR proposed. The fuzzy grey levels of elements to the polishing surface quality, namely the workpiece speed (nw), working distances (K), MRF carrier speed (nMRF) and feed rate (F), were 0.6983, 0.8057, 0.7818, and 0.7817, respectively. The analysis showed that the working distances (K) showed the most remarkable influence on the polishing effect, while the effect of workpiece speed (nw) was the least important. Microscopic observations significantly minimize scratches on the surface. This observation provides an excellent reference value for high surface quality and material removal rate when polishing Ti-6Al-4V alloys.

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“…On the other hand, some work has been published on the effect of finishing processes on the workpiece surface and subsurface from the perspective of material science. For instance, Luo et al disclosed the material behavior after magnetorheological finishing at atomic scale based on morphology observation and X-ray diffraction analysis [23,24]. Bismayer et al…”

Section: Introductionmentioning

confidence: 99%

Ultra-precision finishing of low expansion ceramics by compliant abrasive technologies: A comparative study

Zhu

Beaucamp

2019

Ceramics International

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Advanced ceramics have many attractive features such as high stability and wear resistance that find broad applications in various fields, e.g. optics, aerospace, etc. However, the accompanying difficult-to-machine property with complex geometry brings great challenges to the commonly used laser machining and rigid wheel based grinding in industry.To achieve optical surface quality with surface roughness below 10 nm Ra, three promising ultra-precision compliant machining technologies using adaptive elastic tools are presented in this paper, including bonnet polishing, compliant pitch polishing and shape adaptive grinding with fine grain size. A comparative study was conducted by machining three different low thermal expansion ceramics while continuously increasing attack angle, spindle speed and tool offset across rectangular regions. Material removal rate (MRR) and surface roughness (Ra) with respect to different process conditions are compared. With sufficient data, the processing ability using above three compliant machining technologies is summarized based on the MRR-Ra plots for different ceramics. In addition, microscopic observation and X-ray diffraction analysis are conducted to characterize differences in material behavior.

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Optimized pre-thinning procedures of ion-beam thinning for TEM sample preparation by magnetorheological polishing

Cited by 11 publications

References 15 publications

A Review on Surface Finishing Techniques for Difficult-to-Machine Ceramics by Non-Conventional Finishing Processes

A Review on Surface Finishing Techniques for Difficult-to-Machine Ceramics by Non-Conventional Finishing Processes

A new environment-friendly magnetorheological finishing and fuzzy grey relation analysis in Ti-6Al-4V alloy polishing

Ultra-precision finishing of low expansion ceramics by compliant abrasive technologies: A comparative study

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