Saint-Gobain Centre De Recherches Et D'etudes Europeen

Rossiquet, Gilles

Malte Moeller

Ronald Neufert

Gilles Rossiquet

Fabiano Rodrigues

Paul Leplay

Adrien Vincent

Michael Faber

Sébastien Pinson

Antiballistic armour plate includes a ceramic body including a hard material, provided, on its inner face, with a back energy-dissipating coating. The ceramic body is monolithic. The constituent material of the ceramic body includes grains of ceramic material having a Vickers hardness that is higher than 15 GPa, and a matrix binding the grains, the matrix including a silicon nitride phase and/or a silicon oxynitride phase, the matrix representing between 5 and 40% by weight of the constituent material of the ceramic body. The maximum equivalent diameter of the grains of ceramic material is smaller than or equal to 800 micrometres. The constituent material of the ceramic body has an open porosity that is higher than 5% and lower than 14%. The metallic silicon content in the material, expressed per mm of thickness of the body, is lower than 0.5% by weight.

Armour plate

A monolithic membrane-type filtration structure for filtering liquids, includes a support formed of a porous inorganic material of permeability K, the support having a tubular overall shape with a main axis, an upstream base, a downstream base, a peripheral wall delimiting an internal part and a plurality of passages parallel to the main axis of the support, formed in the internal part of the support, a membrane of permeability Kand of mean thickness tcovering the internal surface of the passages; the external hydraulic diameter of the structure satisfying the relationship &#xd8;=&#x3b1;&#xd7;[A+B&#xd7;log(K&#xd7;t/K)]; in which &#x3b1; is a coefficient between 0.85 and 1.15, and A=&#x2212;21570&#xd7;ent&#x2212;18.6&#xd7;D+19.0&#xd7;e&#x2212;2.5&#xd7;e+0.1244 B=&#x2212;11760&#xd7;D&#xd7;e+9.7&#xd7;e+3.1&#xd7;e+0.04517. Dis the mean hydraulic diameter of the passages, eis the minimum thickness of the internal walls between the passages, eis the minimum thickness of the peripheral wall of the filter.

Monolithic membrane filtration structure

A tangential filter for filtration of a fluid includes a support element, wherein, along a transverse plane perpendicular to the central axis of the support element a) the support element includes in its central portion only inner channels that do not share a common wall with its outer surface, the inner channels having a substantially equivalent hydraulic diameter, b) the support element includes peripheral channels, including at least first and second adjacent peripheral channels, each of the two channels sharing a common wall with the outer surface, c) the ratio of the hydraulic diameter of the first channel to the hydraulic diameter of the second channel is greater than or equal to 1.1, d) the number of peripheral first channels is greater than or equal to the number of peripheral second channels, e) the second channel has a hydraulic diameter substantially identical to the hydraulic diameter of the inner channels.

Tangential filter with a supporting element including a set of channels

Growing community of inventors

Rödental, Germany

Malte Moeller