发明授权
US07326360B1 Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications
失效
用于磁应力传感器和致动器应用的钴铁氧体磁致伸缩材料
- 专利标题： Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications
- 专利标题（中）： 用于磁应力传感器和致动器应用的钴铁氧体磁致伸缩材料
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申请号： US10527660申请日： 2004-07-23
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公开(公告)号： US07326360B1公开(公告)日： 2008-02-05
- 发明人: David C. Jiles , Jason A. Paulsen , John E. Snyder , Chester C. H. Lo , Andrew P. Ring , Keith A. Bormann
- 申请人： David C. Jiles , Jason A. Paulsen , John E. Snyder , Chester C. H. Lo , Andrew P. Ring , Keith A. Bormann
- 申请人地址： US IA Ames
- 专利权人： Iowa State University Research Foundation, Inc.
- 当前专利权人： Iowa State University Research Foundation, Inc.
- 当前专利权人地址： US IA Ames
- 代理机构： Reinhart Boerner Van Deuren P.C.
- 国际申请： PCT/US2004/023886 WO 20040723
- 国际公布： WO2005/081667 WO 20050909
- 主分类号： C01G49/00
- IPC分类号： C01G49/00 ; C01G51/00 ; C04B35/32 ; C04B35/34
摘要：
Magnetostrictive material based on cobalt ferrite is described. The cobalt ferrite is substituted with transition metals (such manganese (Mn), chromium (Cr), zinc (Zn) and copper (Cu) or mixtures thereof) by substituting the transition metals for iron or cobalt to form substituted cobalt ferrite that provides mechanical properties that make the substituted cobalt ferrite material effective for use as sensors and actuators. The substitution of transition metals lowers the Curie temperature of the material (as compared to cobalt ferrite) while maintaining a suitable magnetostriction for stress sensing applications.