A new polishing method of metal mold with large-area electron beam irradiation

Uno, Yoshiyuki; Okada, Akira; Uemura, Kensuke; Raharjo, Purwadi; Sano, Sadao; Yu, Zhanjiang; Mishima, S.

doi:10.1016/j.jmatprotec.2006.11.080

Cited by 64 publications

(16 citation statements)

References 2 publications

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“…One of the main characteristics of the surface is the topographic properties, where many researchers have related the pitting corrosion to the center-line average (R a ). Zatkalíková and Liptáková [12], Hong and Nagumo [8], Hilbert et al [11], Ezuber et al [16], Asami and Hashimoto [17], Uno et al [18], and Burstein and Pistorius [19] showed that by decreasing R a , the resistance to pitting corrosion enhances. However, R a just represents the arithmetic mean of the deviation of the roughness profile [20], and hence the peakedness of the distribution remained to be considered.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the effects of surface preparation on the pitting corrosion resistance of austenitic stainless steel

Sohrabi

Mirzadeh

Dehghanian

2020

Archiv.Civ.Mech.Eng

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The effects of surface preparation on the corrosion resistance of AISI 316L austenitic stainless steel were studied using the cyclic potentiodynamic polarization method. Grinding, mechanical polishing, and electropolishing were considered as the surface modifier methods. Regarding the surface roughness parameters, besides the conventional height parameter (R a), the kurtosis (Rku) as the shape parameter was also considered to rationalize the pitting resistance for the first time. Based on the results of the Tafel extrapolation method, it was revealed that the uniform corrosion can be adequately correlated to R a. However, the pitting resistance was found to mainly relate to the kurtosis, where by decreasing Rku (increased bluntness of topographic features), the pitting resistance enhanced. It was also found that a surface with Rku less than three (platykurtic) is resistant to pitting attack, where this surface can be obtained via electropolishing performed for an optimum time. The effect of electropolishing on the chromium content at the surface and its relation to the corrosion properties were also discussed.

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Section: Introductionmentioning

confidence: 99%

Unraveling the effects of surface preparation on the pitting corrosion resistance of austenitic stainless steel

Sohrabi

Mirzadeh

Dehghanian

2020

Archiv.Civ.Mech.Eng

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“…Various techniques and methods have been reported on the fabrication of low adhesion surfaces of metallic substrates such as aluminium, magnesium, and stainless steel. Uno et al 6 applied a large-area electron beam to finish the metal moulds. They found that the surface roughness significantly decreased, and the corrosion resistance of the mould surface was considerably improved.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of anti-adhesion surfaces on aluminium substrates of rubber plastic moulds using electrolysis plasma treatment

et al. 2014

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An anti-adhesion surface with a water contact angle of 167° was fabricated on aluminium samples of rubber plastic moulds by electrolysis plasma treatment using mixed electrolytes of C6H5O7(NH4)3 and Na2SO4, followed by fluorination. To optimise the fabrication conditions, several important processing parameters such as the discharge voltage, discharge time, concentrations of supporting electrolyte and stearic acid ethanol solution were examined systematically. Using scanning electron microscopy (SEM) to analyse surfaces morphology, micrometer scale pits, and protrusions were found on the surface, with numerous nanometer mastoids contained in the protrusions. These binary micro/nano-scale structures, which are similar to the micro-structures of soil-burrowing animals, play a critical role in achieving low adhesion properties. Otherwise, the anti-adhesion behaviours of the resulting samples were analysed by the atomic force microscope (AFM), Fourier-transform infrared spectrophotometer (FTIR), electrons probe micro-analyzer (EPMA), optical contact angle meter, digital Vickers microhardness (Hv) tester, and electronic universal testing. The results show that the electrolysis plasma treatment does not require complex processing parameters, using a simple device, and is an environment-friendly and effective method. Under the optimised conditions, the contact angle (CA) for the modified anti-adhesion surface is up to 167°, the sliding angle (SA) is less than 2°, roughness of the sample surface is only 0.409μm. Moreover, the adhesion force and Hv are 0. 9KN and 385, respectively.

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“…A survey of removal mechanism was written by Evans et al (2003). In recent years there were efforts to develop versatile processes like using electron beam (Uno et al, 2007) and laser (Ukar et al, 2010) for irradiation polishing, magnetorheological fluid polishing (Golini et al, 1997), electrorheological fluid (Erf) polishing (Kuriyagawa et al, 2002) and abrasive jet polishing (Yan et al, 2008;Zhu et al, 2009). It was also reported that vibration had positive effects on polishing-in wafer edge finishing using polishing pad (Kobayashi et al, 2008), polishing microsurfaces with a small tool (Suzuki et al, 2006), polishing with a ball tool (Shiou and Ciou, 2008), magnetic abrasive polishing (Yin and Shinmura, 2004) and polishing with a pointed horn (Hocheng and Kuo, 2002).…”

Section: Introductionmentioning

confidence: 99%

An investigation of the effects of the tool path on the removal of material in polishing

Tam¹,

Cheng²

2010

Journal of Materials Processing Technology

110

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A new polishing method of metal mold with large-area electron beam irradiation

Cited by 64 publications

References 2 publications

Unraveling the effects of surface preparation on the pitting corrosion resistance of austenitic stainless steel

Unraveling the effects of surface preparation on the pitting corrosion resistance of austenitic stainless steel

Fabrication of anti-adhesion surfaces on aluminium substrates of rubber plastic moulds using electrolysis plasma treatment

An investigation of the effects of the tool path on the removal of material in polishing

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