Simulation and Experimental Study on the Surface Generation Mechanism of Cu Alloys in Ultra-Precision Diamond Turning

Zhang, Quanli; Guo, Nan; Chen, Yan; Fu, Yucan; Zhao, Qingliang

doi:10.3390/mi10090573

Cited by 8 publications

(4 citation statements)

References 28 publications

(29 reference statements)

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“…For instance, the Chinese groups at Harbin Institute of Technology and Qinhuangdao University collaborated with the Irish University College Dublin [36]. The experimental findings of Harbin Institute of Technology, together with two groups from Nanjing University, are supported by simulations, providing a deeper understanding of the process that explains the phenomena [37]. The demands on measurement standards, where the geometric shape is crucial, require a more detailed investigation of the effects that limit the manufacturing process.…”

Section: Resultsmentioning

confidence: 99%

Precision of diamond turning sinusoidal structures as measurement standards used to assess topography fidelity

Hüser,

Meeß,

Dai

et al. 2024

Surf. Topogr.: Metrol. Prop.

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In optical surface metrology, it is crucial to assess the fidelity of the topography measuring signals. One parameter to quantify this is the \textsl{small-scale fidelity limit} $T_\mathrm{FIL}$ defined in ISO 25178-600:2019. To determine this parameter, sinusoidal structures are generated, where the wavelengths are modulated according to a discrete chirp series.The objects are produced by means of ultra-precision diamond face turning. Planar areas and regions with slopes below $4^\circ$ could be produced with form deviations of $\lesssim 10 \, \mathrm{n m}$.An initial estimate of the cutting tool's nose radius resulted in adeviation that caused the ridges of the structures to be too narrow by approximately $150 \, \mathrm{n m}$, while the trenches were too wide.At the bottom of narrow trenches, deviations are observed in the form of elevations with heights of about $20$ to $100 \, \mathrm{n m}$.The measurement standard investigated in this study has also been used to characterise optical instruments in a round-robin test within the European project TracOptic, which requires precise knowledge of the geometry of all structures. The geometry of the topography, cosine structures superimposed with form deviations, was measured using the Met.\ LR-AFM metrological long-range atomic force microscope of the German National Metrology Institute.

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Section: Resultsmentioning

confidence: 99%

Precision of diamond turning sinusoidal structures as measurement standards used to assess topography fidelity

Hüser,

Meeß,

Dai

et al. 2024

Surf. Topogr.: Metrol. Prop.

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“…The nature of this process yields circular marks along a given tooling track. The exact manifestation in terms of depth, spacing, and overall profile can vary depending on the machining setup and optic under fabrication [14,15]. Other factors such as undamped environmental vibration and thermal expansion of the part/tooling can also impact the profile and magnitude of these marks.…”

Section: Single-point Diamond Turningmentioning

confidence: 99%

Parametric Mid-Spatial Frequency Surface Error Synthesis

Hefferan

Graves²,

Trumper³

et al. 2021

Photonics

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Standard mid-spatial frequency tooling mark errors were parameterized into a series of characteristic features and systematically investigated. Diffraction encircled and ensquared energy radii at the 90% levels from an unpowered optical surface were determined as a function of the root-mean-square surface irregularity, characteristic tooling mark parameters, fold mirror rotation angle, and incident beam f-number. Tooling mark frequencies on the order of 20 cycles per aperture or less were considered. This subset encompasses small footprints on single-point diamond turned optics or large footprints on sub-aperture tool polished optics. Of the characteristic features, off-axis fabrication distance held the highest impact to encircled and ensquared energy radii. The transverse oscillation of a tooling path was found to be the second highest contributor. Both impacts increased with radial tooling mark frequency.

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“…Toxic gases such as hydrogen sulfide (H 2 S), ammonia (NH 3 ), and volatile organic compounds (VOC) can cause serious environmental problems that can harm humans and also on other organisms [1]. Among the gases, NH 3 is a common gas in everyday life that may be found in agricultural fertilizers, chemical systems, food processing, and animal husbandry [2][3][4]. It's also one of the damaging pollutants released into the environment throughout the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Application of Polypyrrole/DBSA/Boron Nitride Ternary Composite as a Potential Chemical Sensor for Ammonia Gas Detection

Sambasevam,

Suhaimi,

Mohd Norsham

et al. 2023

Orbital: Electron. J. Chem.

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The present study demonstrates the self-assembly method of chemical oxidative polymerization of polypyrrole (PPy), polypyrrole/boron nitride (PPy/BN), and polypyrrole/dodecylbenzene sulfonic acid/boron nitride (PPy/DBSA/BN) thin films for ammonia (NH3) gas detection. The PPy, PPy/BN, and PPy/DBSA/BN thin films were comprehensively characterized using Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy (ATR-FTIR), Scanning Electron Microscopy (SEM), X-ray diffractometry (XRD) and conductivity measurement. ATR-FTIR revealed all the pertinent peaks of PPy, BN, and DBSA present in the PPy/DBSA/BN. SEM images of PPy/DBSA/BN depict well-organized morphology. PPy/DBSA/BN recorded the highest conductivity of 4.771 x 10-6 S cm-1 among the prepared polymer thin films. The obtained characterization results are in good agreement with the NH3 gas sensor measurements conducted on the PPy/DBSA/BN composite. The linear correlation coefficient between the two was found to be R2 = 0.9916, indicating a strong relationship. Furthermore, the PPy/DBSA/BN thin film demonstrated a low limit of detection (LOD) of 5.8 ppm, surpassing the OSHA threshold value for NH3 gas. This suggests that the sensor is highly sensitive to trace amounts of NH3 gas. Moreover, the PPy/DBSA/BN thin film exhibited exceptional reusability, with the ability to be used for up to 10 cycles without a significant decrease in performance. The sensor also demonstrated selectivity towards NH3 gas in the presence of common interfering species. Additionally, it exhibited long-term stability, maintaining its performance over a period of 7 days. The proposed self-assembled gas sensor has showcased remarkable performance in detecting NH3 gas at room temperature, making it a promising candidate for industrial applications.

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Simulation and Experimental Study on the Surface Generation Mechanism of Cu Alloys in Ultra-Precision Diamond Turning

Cited by 8 publications

References 28 publications

Precision of diamond turning sinusoidal structures as measurement standards used to assess topography fidelity

Precision of diamond turning sinusoidal structures as measurement standards used to assess topography fidelity

Parametric Mid-Spatial Frequency Surface Error Synthesis

Synthesis and Application of Polypyrrole/DBSA/Boron Nitride Ternary Composite as a Potential Chemical Sensor for Ammonia Gas Detection

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