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Title: Magnetorheological materials, method for making, and applications thereof

Abstract

A magnetorheological material comprises a magnetic particle and a ceramic material, wherein the magnetorheological material is in a dried form and further wherein a portion of the ceramic material is in the form of a nanocrystalline coating over the entire exterior surface of the magnetic particle and another portion of the ceramic material is in the form of a free nanocrystal. A magnetorheological material comprises a magnetic particle having a ceramic material coating over an external surface thereof as a result of a coating process, and a free nanocrystal of the ceramic material in the form of a residual by-product of the coating process. A sol-gel process for making a magnetorheological product comprises providing a sol of a desired ceramic coating material; combining a desired quantity of carbonyl iron (CI) particles with the sol to coat the CI particles with the ceramic coating material; creating a resulting quantity of nanocrystalline ceramic material-coated CI particles and a quantity of free nanocrystals of the ceramic material; and, drying the resulting quantity of coated CI particles and free nanocrystals to a moisture content equal to or less than 2 wt %.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
University of Rochester, Rochester, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1150713
Patent Number(s):
8,808,568
Application Number:
12/575,770
Assignee:
University of Rochester (Rochester, NY)
DOE Contract Number:  
FC52-08NA28302
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Shen, Rui, Yang, Hong, Shafrir, Shai N., Miao, Chunlin, Wang, Mimi, Mici, Joni, Lambropoulos, John C., and Jacobs, Stephen D. Magnetorheological materials, method for making, and applications thereof. United States: N. p., 2014. Web.
Shen, Rui, Yang, Hong, Shafrir, Shai N., Miao, Chunlin, Wang, Mimi, Mici, Joni, Lambropoulos, John C., & Jacobs, Stephen D. Magnetorheological materials, method for making, and applications thereof. United States.
Shen, Rui, Yang, Hong, Shafrir, Shai N., Miao, Chunlin, Wang, Mimi, Mici, Joni, Lambropoulos, John C., and Jacobs, Stephen D. Tue . "Magnetorheological materials, method for making, and applications thereof". United States. https://www.osti.gov/servlets/purl/1150713.
@article{osti_1150713,
title = {Magnetorheological materials, method for making, and applications thereof},
author = {Shen, Rui and Yang, Hong and Shafrir, Shai N. and Miao, Chunlin and Wang, Mimi and Mici, Joni and Lambropoulos, John C. and Jacobs, Stephen D.},
abstractNote = {A magnetorheological material comprises a magnetic particle and a ceramic material, wherein the magnetorheological material is in a dried form and further wherein a portion of the ceramic material is in the form of a nanocrystalline coating over the entire exterior surface of the magnetic particle and another portion of the ceramic material is in the form of a free nanocrystal. A magnetorheological material comprises a magnetic particle having a ceramic material coating over an external surface thereof as a result of a coating process, and a free nanocrystal of the ceramic material in the form of a residual by-product of the coating process. A sol-gel process for making a magnetorheological product comprises providing a sol of a desired ceramic coating material; combining a desired quantity of carbonyl iron (CI) particles with the sol to coat the CI particles with the ceramic coating material; creating a resulting quantity of nanocrystalline ceramic material-coated CI particles and a quantity of free nanocrystals of the ceramic material; and, drying the resulting quantity of coated CI particles and free nanocrystals to a moisture content equal to or less than 2 wt %.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {8}
}

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