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Preparation and characterization of spherical magnetorheological composite abrasives based on two different titanium sources.

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Title: Preparation and characterization of spherical magnetorheological composite abrasives based on two different titanium sources.
Authors: He, Bingyang1,2 (AUTHOR), Yan, Zhiqiao1 (AUTHOR), Cheng, Yuhao1 (AUTHOR), Wei, Zhicheng3 (AUTHOR), Luo, Kaiyuan4 (AUTHOR), Cao, Jun1,5 (AUTHOR) cavan@hpu.edu.cn, Chen, Feng1 (AUTHOR) chenfeng@gdinm.com, Wang, Juan1,2 (AUTHOR) jwang@sdu.edu.cn
Source: Ceramics International. Nov2025:Part B, Vol. 51 Issue 28, p57701-57714. 14p.
Subjects: Corrosion resistance, Titanium compounds, Finishes & finishing, Abrasives, Microhardness
Abstract: Magnetorheological finishing (MRF) is one of the key technologies for the efficient and precise planarization of surfaces. While maintaining magnetic properties, improving the corrosion resistance of magnetic particles and their synergy with abrasives plays an important role in improving the efficiency and quality of magnetorheological finishing. In this work, TiO 2 and TiH 2 powders were used as titanium sources to prepare two Fe-Ti-O magnetorheological composite powders, labelled as A and B, through an in-situ oxidation-reduction process. Subsequently, diamond grits (0.5 μm, 5 wt%) were added into the Fe-Ti-O magnetorheological composite powders and spherical magnetorheological composite abrasives (SAs) with particle size ranged from 2 to 12 μm were prepared by a spray granulation process. The effects of TiO 2 /TiH 2 addition on the microscopic morphology, phase composition, microhardness, density, magnetic properties, particle sizes, specific surface areas and corrosion resistance of A, B and SAs were investigated. The results indicate that A and B are composed of two phases, Fe and Fe 2 TiO 4 , which have a unique "Ferrero" structure. The microhardness, density, saturation magnetization and corrosion potential of B were 525 HV, 5.125 g/cm3, 131 emu/g and −0.841 V SCE respectively, which were higher than those of A. The results of the magnetorheological finishing of single crystal silicon wafers demonstrate that the efficiency of the magnetorheological slurry (MRS-B) is approximately 6.3 times that of MRS-A. It has been demonstrated that B is a more suitable base material for SAs, which possess a high degree of sphericity and a high degree of particle size concentration. The Raman spectra of SAs demonstrated that the preparation process did not result in the carbonization of the diamond grits. The magnetic properties (Ms = 104.1 emu/g, Hc = 133.12 Oe, Mr = 5.88 emu/g) of SAs meets the requirements for magnetorheological finishing and positions them as ideal candidates for the magnetorheological finishing of third-generation semiconductor SiC wafers. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Group: Ti
  Data: Preparation and characterization of spherical magnetorheological composite abrasives based on two different titanium sources.
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  Data: <searchLink fieldCode="AR" term="%22He%2C+Bingyang%22">He, Bingyang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Zhiqiao%22">Yan, Zhiqiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Yuhao%22">Cheng, Yuhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Zhicheng%22">Wei, Zhicheng</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Kaiyuan%22">Luo, Kaiyuan</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Jun%22">Cao, Jun</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> cavan@hpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Feng%22">Chen, Feng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chenfeng@gdinm.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Juan%22">Wang, Juan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jwang@sdu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Nov2025:Part B, Vol. 51 Issue 28, p57701-57714. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Corrosion+resistance%22">Corrosion resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+compounds%22">Titanium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Finishes+%26+finishing%22">Finishes & finishing</searchLink><br /><searchLink fieldCode="DE" term="%22Abrasives%22">Abrasives</searchLink><br /><searchLink fieldCode="DE" term="%22Microhardness%22">Microhardness</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Magnetorheological finishing (MRF) is one of the key technologies for the efficient and precise planarization of surfaces. While maintaining magnetic properties, improving the corrosion resistance of magnetic particles and their synergy with abrasives plays an important role in improving the efficiency and quality of magnetorheological finishing. In this work, TiO 2 and TiH 2 powders were used as titanium sources to prepare two Fe-Ti-O magnetorheological composite powders, labelled as A and B, through an in-situ oxidation-reduction process. Subsequently, diamond grits (0.5 μm, 5 wt%) were added into the Fe-Ti-O magnetorheological composite powders and spherical magnetorheological composite abrasives (SAs) with particle size ranged from 2 to 12 μm were prepared by a spray granulation process. The effects of TiO 2 /TiH 2 addition on the microscopic morphology, phase composition, microhardness, density, magnetic properties, particle sizes, specific surface areas and corrosion resistance of A, B and SAs were investigated. The results indicate that A and B are composed of two phases, Fe and Fe 2 TiO 4 , which have a unique "Ferrero" structure. The microhardness, density, saturation magnetization and corrosion potential of B were 525 HV, 5.125 g/cm3, 131 emu/g and −0.841 V SCE respectively, which were higher than those of A. The results of the magnetorheological finishing of single crystal silicon wafers demonstrate that the efficiency of the magnetorheological slurry (MRS-B) is approximately 6.3 times that of MRS-A. It has been demonstrated that B is a more suitable base material for SAs, which possess a high degree of sphericity and a high degree of particle size concentration. The Raman spectra of SAs demonstrated that the preparation process did not result in the carbonization of the diamond grits. The magnetic properties (Ms = 104.1 emu/g, Hc = 133.12 Oe, Mr = 5.88 emu/g) of SAs meets the requirements for magnetorheological finishing and positions them as ideal candidates for the magnetorheological finishing of third-generation semiconductor SiC wafers. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ceramint.2025.09.472
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 57701
    Subjects:
      – SubjectFull: Corrosion resistance
        Type: general
      – SubjectFull: Titanium compounds
        Type: general
      – SubjectFull: Finishes & finishing
        Type: general
      – SubjectFull: Abrasives
        Type: general
      – SubjectFull: Microhardness
        Type: general
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      – TitleFull: Preparation and characterization of spherical magnetorheological composite abrasives based on two different titanium sources.
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            NameFull: He, Bingyang
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              Text: Nov2025:Part B
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              Y: 2025
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