Technology of polishing of titanium surface using the fiber-laser radiation

Yermachenko, Valery M.; Vdovin, Yu. A.; Mironov, V. D.; Naumov, N V; Petrovskiy, V N; Prokopova, N M; Polsky, V. I.; Джумаев, П. С.; Yakushin, V. L.

doi:10.1134/s1054660x10120042

Cited by 12 publications

(4 citation statements)

References 4 publications

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“…Similar defects were also reported by Yermachenko et al [32] when LP VT16 titanium alloy in air. A comparative study involving the LµP of Ti-6Al-4V and martensitic tool steel with an additional laser beam for pre-heating the workpiece surfaces was detailed by Nüsser et al [33] .…”

Section: Laser Polishing Of Nickel and Titanium Alloyssupporting

confidence: 88%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

195

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Process optimisation for laser polishing novel 3D printed SS316L parts  Evaluating the effects of key polishing parameters on SS316L surface roughness  Detailed spectroscopic analysis of oxide layer formation due to laser polishing  Comparative surface integrity analysis of SS parts polished in air and argon  A maximum reduction in roughness of over 94% achieved at optimised polishing settings

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Section: Laser Polishing Of Nickel and Titanium Alloyssupporting

confidence: 88%

Laser polishing of 3D printed mesoscale components

Bhaduri

Penchev

Batal

et al. 2017

Applied Surface Science

195

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show abstract

“…Polishing process is an effective method in industrial production for improving the surface properties and shape of materials 29,30 . During the polishing process, medium materials such as inert gas and surfactant are usually added to achieve functionalities like lubrication and protection 31,32 . Compared with the mediums mentioned above, water is a simpler and more accessible material, which may serve as a moisturizing and buffering agent during the polishing process.…”

mentioning

confidence: 99%

Water Polishing improved controlled-release characteristics and fertilizer efficiency of castor oil-based polyurethane coated diammonium phosphate

Lu¹,

Tian²,

Zhang³

et al. 2020

Sci Rep

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The production cost of controlled-release fertilizers is an important factoring limiting their applications. To reduce the coating cost of diammonium phosphate (DAP) and improve its nutrition release characteristics, the fertilizer cores were modified by water polishing with three dosages at 1, 2, and 3%. The effects of modification were evaluated in terms of particle hardness, size distribution, angle of repose and specific surface area. Castor oil-based polyurethane was used as coating material for fertilizer performance evaluation. A pot experiment was conducted to verify the fertilizer efficiency of coated diammonium phosphate (CDAP) with maize. The results showed that polishing with 2% water reduced the angle of repose by 2.48-10.57% and specific surface area by 5.70-48.76%, making it more suitable for coating. The nutrient release period of CDAP was significantly prolonged by 5.36 times. Soil available phosphorous, enzyme activities, maize grain yield, and phosphorous use efficiency were all improved through the blending application of coated and normal phosphate fertilizer. This study demonstrated that water-based surface modification is a low-cost and effective method for improvement and promotion of controlled release P fertilizers. Phosphorus (P) is an essential nutrient for maintaining healthy crop growth, reproduction and yield 1-3 . However, farmers tend to apply excessive amount of P fertilizers in order to obtain high yields 4 , resulting in degradation of microbial community activity and soil tilth 5 , decrease in crop quality 6 , and varying forms of water pollution 7 . Meanwhile, P fertilizers are mainly derived from P rock, a non-renewable resource. With the increasing use of P fertilizer, the global P reserve is facing serious concerns 8 . Innovative technologies for improving the utilization efficiency and reducing the production cost of P fertilizers are urgently needed.Controlled-release fertilizers have been proved to improve the utilization efficiency of both nitrogen (N) and P fertilizer 9,10 . While much research has been conducted on controlled-release N fertilizers 11,12 , relatively much less work has focused on controlled-release P fertilizers. Chemically bound P in soil could become available to plant under certain biogeochemical conditions, serving as a natural reservoir of "slow-release" P 13 . However, the slow release characteristics of soil bound P are affected by many uncontrollable factors, such as temperature, humidity, organic acid secreted by crop roots, soil pH, and soil mineral composition [14][15][16][17] . Thus, P released under these conditions cannot fulfill the crop P demand, especially during the critical growth period. Recent research indicated that the fixed rate of soil P was closely related to the concentration of P in soil solution 18 . Coated P fertilizers have advantages over conventional P fertilizers in that the polymer coating prevents direct contact between soil and fertilizer, thus the controlled release of P promotes uptake by plants and reduces P fix...

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“…Moreover, it is strongly affected by the initial surface topography and by the presence of surface defects that could vary the absorption or reflection of the incident radiation. Although several works report the suitability of LµP for highly polished surfaces, the achievement of low surface roughness, especially when the initial surface morphology has a quality, still remains one of the biggest challenges [10], [11], [13]- [15]. This work aims to understand the effect of surface finishing on the cleanability of stainless steel 304 alloy surface, that is a widely used material for different industrial purposes due to a combination of good mechanical properties and excellent corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%