Synthesis and application of titania-coated ultrafine diamond abrasive particles

Abstract Nickel-based superalloys have a wide range of high-temperature applications such as turbine blades. The complex geometries of these applications and the specific properties of the materials raise difficulties in the surface finishing. Magnetic abrasive finishing (MAF) has proven effective in finishing the complex geometries. In MAF, the magnetic properties of the workpiece, tool, and abrasive play important roles in controlling finishing characteristics. This paper presents the effects of nickel coating on the abrasive behavior during finishing and resulting finishing characteristics of Ni-based superalloys. The Ni-coated diamond abrasive is more attracted to the magnet than the Ni-based superalloy surface. As a result, fewer Ni-coated diamond abrasive particles, which are stuck between the magnetic-particle brush and the target surface, participate in surface finishing. Because of this, coupled with the reduced sharpness of abrasive cutting edges due to the coating, Ni-coated diamond abrasive cannot effectively smooth the target surface in MAF. However, the Ni coating is worn off during finishing of the hard, rough, additively manufactured surface. Then, the diamond abrasive participates in finishing as uncoated diamond abrasive and facilitates the material removal, finishing the target surface.

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Studies on Electroplated Grinding Wheel with Diamond Abrasive Particles

Journal of the Metal Finishing Society of Japan ◽

10.4139/sfj1950.16.497 ◽

1965 ◽

Vol 16 (11) ◽

pp. 497-500

Author(s):

Matsuhei KISHI ◽

Hideo YAMAMOTO ◽

Urako KIYONO

Keyword(s):

Grinding Wheel ◽

Abrasive Particles ◽

Diamond Abrasive

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Research on The Bonding Properties of Vitrified Bonds With Porous Diamonds and The Grinding Performance of Porous Diamond Abrasive Tools

10.21203/rs.3.rs-970850/v1 ◽

2021 ◽

Author(s):

Jianwei LI ◽

Wenjun FANG ◽

Long WAN ◽

Xiaopan LIU ◽

Weida HU ◽

...

Keyword(s):

Wafer Surface ◽

Processing Efficiency ◽

Abrasive Particles ◽

Bonding Properties ◽

New Type ◽

Vitrified Bond ◽

Abrasive Tools ◽

Grinding Efficiency ◽

Diamond Abrasive

Abstract Ordinary diamond presents the disadvantages of poor self-sharpening and concentrated grinding stress when it is used as an abrasive. Moreover, this kind of diamond cannot be well wetted by the vitrified bond, resulting in a lower holding force of the binder to the abrasives (i.e., the diamond is easy to detach from the binder matrix during grinding). These comprehensive factors not only reduce the surface quality of the processed workpiece, but also hinder the processing efficiency. In order to solve these problems, a new type of porous diamond with high self-sharpening properties was prepared using a thermochemical corrosion method in this study. Our results showed a great improvement in pore volume and specific surface area of the porous diamond compared with ordinary diamond abrasive particles, and the holding force and wettability of vitrified bond to the porous diamond abrasive particles were also improved. Compared with ordinary diamond abrasive tools, porous diamond abrasive tools showed a 29.6% increase in grinding efficiency, a 15.5% decreased in grinding ratio, a 27.5% reduction in workpiece surface roughness, and the scratches on the silicon wafer surface were reduced and refined.

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Influence of flowing parameter of magnetorheological polishing fluids (MRPFs) on the quality of processing polycrystalline glass ceramics

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x11428365 ◽

2011 ◽

Vol 23 (9) ◽

pp. 959-962 ◽

Cited By ~ 3

Author(s):

Gennadi Gorodkin ◽

Zoya Novikova

Keyword(s):

Glass Ceramics ◽

Root Mean Square Roughness ◽

Magnetorheological Finishing ◽

Abrasive Particles ◽

Atomic Force ◽

Finishing Process ◽

Surface Measurements ◽

Magnetorheological Polishing ◽

Diamond Abrasive

The study of rheological characteristics for two types of magnetorheological polishing fluids (MRPFs), MRPF-1 based on cerium oxide abrasive particles and MRPF-2 based on nano-diamond abrasive particles, was carried out. Experiments on polishing of a polycrystalline sitall laser mirror substrates with these fluids using magnetorheological finishing process were executed. The surface structure of the samples after the polishing was investigated with the atomic force microscope. The results of surface measurements for the samples under the study polished with both MRPF-1 and MRPF-2 fluids are reported in comparison with the existed data obtained from a regular pitch polishing method. The lowest root-mean-square roughness of 0.2–0.4 nm was obtained for the samples polished with MRPF-2.

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Fabrication and Application of Gel-bonded Ultrafine Diamond Abrasive Tools

Journal of Mechanical Engineering ◽

10.3901/jme.2015.15.205 ◽

2015 ◽

Vol 51 (15) ◽

pp. 205 ◽

Cited By ~ 7

Author(s):

Jing LU

Keyword(s):

Ultrafine Diamond ◽

Abrasive Tools ◽

Diamond Abrasive

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A scratching force model of diamond abrasive particles in wire sawing of single crystal SiC

Materials Science in Semiconductor Processing ◽

10.1016/j.mssp.2017.05.032 ◽

2017 ◽

Vol 68 ◽

pp. 21-29 ◽

Cited By ~ 9

Author(s):

Peizhi Wang ◽

Peiqi Ge ◽

Zongqiang Li ◽

Mengran Ge ◽

Yufei Gao

Keyword(s):

Single Crystal ◽

Force Model ◽

Abrasive Particles ◽

Single Crystal Sic ◽

Diamond Abrasive

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Characteristics of Diamond Abrasive Used in Magnetic Abrasive Finishing of Nickel-Based Superalloys

Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability ◽

10.1115/msec2020-8365 ◽

2020 ◽

Author(s):

Jason Ratay ◽

Hitomi Yamaguchi

Keyword(s):

Turbine Blades ◽

Target Surface ◽

Surface Finishing ◽

Complex Geometries ◽

Magnetic Abrasive Finishing ◽

Abrasive Particles ◽

Abrasive Finishing ◽

Wide Range ◽

Abrasive Behavior ◽

Diamond Abrasive

Abstract Nickel-based superalloys have a wide range of high-temperature applications, such as turbine blades. The complex geometries of these applications and the specific properties of the materials raise difficulties in the surface finishing. Magnetic abrasive finishing (MAF) has proven effective in finishing the complex geometries. In MAF, the magnetic properties of the workpiece, tool, and abrasive play important roles in controlling finishing characteristics. This paper presents the effects of nickel coating on the abrasive behavior during finishing and resulting finishing characteristics of Ni-based superalloys. The Ni-coated diamond abrasive is more attracted to the magnet than the Ni-based superalloy surface. As a result, fewer Ni-coated diamond abrasive particles, which are stuck between the magnetic-particle brush and the target surface, participate in surface finishing. Because of this, coupled with the reduced sharpness of abrasive cutting edges due to the coating, Ni-coated diamond abrasive cannot effectively smooth the target surface in MAF. However, the Ni coating is worn off during finishing of the hard, rough, additively manufactured surface. Then, the diamond abrasive participates in finishing as uncoated diamond abrasive and facilitates the material removal, finishing the target surface.

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Optimization of Sandblasting Process of Complex 3D Surface Polishing Using Variable Viscoelastic Diamond Abrasive Particles

Proceedings of the 2018 3rd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2018) ◽

10.2991/amcce-18.2018.65 ◽

2018 ◽

Author(s):

Junghua Tung ◽

Chengshun Chen ◽

Wenyu Zhao ◽

Cher-Ming Tan

Keyword(s):

Abrasive Particles ◽

Surface Polishing ◽

3D Surface ◽

Diamond Abrasive

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TRIBOLOGICAL ASPECTS OF DIAMOND-ABRASIVE PROCESSING OF SILICON CARBIDE PLATES

PROBLEMS OF APPLIED MECHANICS ◽

10.30987/conferencearticle_5fd1ed047fb069.67714622 ◽

2020 ◽

Author(s):

Sergey Bishutin ◽

Sergey Alehin

Keyword(s):

Silicon Carbide ◽

Electron Microscope ◽

Brittle Fracture ◽

Experimental Studies ◽

Surface Layers ◽

Abrasive Particles ◽

Tribological System ◽

Diamond Abrasive ◽

Scanning Electron

The article considers diamond-abrasive grinding of silicon carbide plates as a tribological system in order to increase the productivity and quality of this processing, as well as to substantiate the directions of its improvement. The process of removing material from the workpiece is considered as a result of abrasive wear of the silicon carbide plate on the lap with loose abrasive. Based on the hypothesis of F. Preston, a dependence was obtained for calculating the rate of removal of material removed during processing from the surface of the workpiece. The results of experimental studies of the productivity and quality of processing are presented. Attention is paid to the formation of surface layers of silicon carbide plates by introducing abrasive particles into the workpiece, causing the formation of multidirectional microcracks and the removal of material mainly as a result of brittle fracture. The results of experimental studies of the state of surface layers using a digital 3-D microscope VHX-1000E, a scanning electron microscope Jeol JSM 6610 and a profiler-profilometer "Mahr GmbH" Based on the research results, recommendations were formulated to improve the efficiency of diamond-abrasive processing of silicon carbide plates.

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