Permeability measurements in cobalt ferrite and carbonyl iron powders and suspensions

Vicente, J. De; Bossis, Georges; Lacis, S.; Guyot, M.

doi:10.1016/s0304-8853(02)00484-5

Cited by 89 publications

(48 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…11). It must be pointed out that this model predicts a reasonable value for the average gap compared to previous determination supposing a perfect chain structure based on permeability measurement (De Vicente et al, 2002) or stress/strain curve which predicts g 0 /a = 5.6% (Coquelle et al, in press). Now, the behaviour of the material under a new tension (the 2nd tensions) will be different since some polymer-to-particle bonds have been broken during the first tension.…”

Section: Stress/strain Curves Of the Structured Compositementioning

confidence: 55%

Mullins effect in elastomers filled with particles aligned by a magnetic field

Coquelle¹,

Bossis²

2006

International Journal of Solids and Structures

View full text Add to dashboard Cite

Magnetorheological elastomers (MRE) are particulate composite materials, whose fillers are structured by a magnetic field during curing. These particles are brought in quasi-contact by the field, in a chain-like unidirectional structure. Due to this organization the local stresses between the particles is high and debonding between particles and elastomer occur at low strain. We have experimentally studied and analytically modeled the progressive breaking of the polymer-to-particle bonds. The two cases of strong and weak bonds between elastomers and particles have been studied. The analytical model correctly reproduces the stress strain curve in the presence of a debonding process although overestimating the size of the debonding cavity which is obtained by comparison between experiments and FEM simulations. The extension of the model to a chain of spheres allows to well explain the Mullins effect on MRE. Furthermore it is shown that the quality of the bonds between the particles and the elastomer does not influence the change of stiffness brought by the application of a magnetic field.

show abstract

Section: Stress/strain Curves Of the Structured Compositementioning

confidence: 55%

Mullins effect in elastomers filled with particles aligned by a magnetic field

Coquelle¹,

Bossis²

2006

International Journal of Solids and Structures

View full text Add to dashboard Cite

show abstract

“…Iron particles used here do present a thin oxide surface layer [30] and hence behave as amphoteric solids with surface charges controlled by the pH in the aqueous medium [31]. Fig.…”

Section: Electrokinetic Behaviormentioning

confidence: 99%

On the use of magnetic nano and microparticles for lake restoration

Vicente

Merino-Martos

Cruz-Pizarro

et al. 2010

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…This allows for control of the measurement angle in relation to the easy axis of magnetization. Examples can be found in articles by de Vicente et al, [53] Sakurai et al [54] and Morales et al [55] Whether the sample is mixed with a non-magnetic powder or dispersed in a solid matrix, measurements of the coercivity as a function of concentration of magnetic particles can provide valuable information on the type of anisotropy present. A strong decrease of the coercivity with the increasing concentration of particles [55,56] is usually related to anisotropy caused by magnetostatic fields (i.e.…”

Section: Dried Filmsmentioning

confidence: 99%

Physical Properties of Elongated Magnetic Particles: Magnetization and Friction Coefficient Anisotropies

2009

View full text Add to dashboard Cite

β‐turns belong to the most important secondary structure elements in proteins. On the basis of density functional calculations, vibrational Raman optical activity signatures of different types of β‐turns are established and compared as well as related to other signatures proposed in the literature earlier. Our findings indicate that there are much more characteristic ROA signals of β‐turns than have been hitherto suggested. These suggested signatures are, however, found to be valid for the most important type of β‐turns. Moreover, we compare the influence of different amino acid side chains on these signatures and investigate the discrimination of β‐turns from other secondary structure elements, namely α‐ and 310‐helices.

show abstract

Permeability measurements in cobalt ferrite and carbonyl iron powders and suspensions

Cited by 89 publications

References 12 publications

Mullins effect in elastomers filled with particles aligned by a magnetic field

Mullins effect in elastomers filled with particles aligned by a magnetic field

On the use of magnetic nano and microparticles for lake restoration

Physical Properties of Elongated Magnetic Particles: Magnetization and Friction Coefficient Anisotropies

Contact Info

Product

Resources

About