Part made from oxide/oxide composite material for 3-D reinforcing and method for manufacture of same

Patent metadata

Field	Value
Publication number	US-10400367-B2
Application number	US-201515120969-A
Country	US
Kind code	B2
Filing date	Feb 19, 2015
Priority date	Feb 24, 2014
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A part made of oxide/oxide composite material includes fiber reinforcement constituted by a plurality of warp yarn layers and of weft yarn layers interlinked by three-dimensional weaving, with the spaces present between the reinforcing yarns being filled with a refractory oxide matrix. The fiber reinforcement presents a weave selected from the following weaves: interlock; multi-plain; multi-satin; and multi-serge, with warp and weft thread counts lying in the range 4 yarns/cm to 20 yarns/cm. The fiber reinforcement also presents a fiber volume fraction lying in the range 40% to 51%.

First claim

The invention claimed is:

1. A part made of oxide/oxide composite material comprising fiber reinforcement constituted by a plurality of warp yarn layers and of weft yarn layers interlinked by three-dimensional weaving, with the spaces present between the reinforcing yarns being filled with a refractory oxide matrix;
wherein the fiber reinforcement presents a weave selected from the following weaves: interlock; multi-plain; multi-satin; and multi-serge; and warp and weft thread counts lying in the range 4 yarns/cm to 20 yarns/cm, and wherein the fiber reinforcement presents a fiber volume fraction lying in the range 40% to 51%, and wherein spaces present between the yarns of the fiber reinforcement are of dimensions that are less than five times a maximum section of the yarns of the fiber reinforcement.

2. A part according to claim 1 , wherein the part presents, in monotonic traction, at ambient temperature, and in the warp direction:
a modulus of elasticity lying in the range 120 GPa to 170 GPa;
a breaking deformation of not less than 0.35%; and
a breaking stress greater than 250 MPa.

3. A part according to claim 1 , wherein the yarns of the fiber reinforcement are made of fibers constituted by one or more of the following materials: alumina;
mullite; silica; an aluminosilicate; and a borosilicate.

4. A part according to claim 1 , wherein the material of the matrix is selected from: alumina; mullite; silica; an aluminosilicate; and an aluminophosphate.

5. A method of fabricating an oxide/oxide composite material part, the method comprising the following steps:
forming a fiber texture by three-dimensional weaving of refractory oxide yarns;
compacting said fiber texture;
placing on one side of the fiber texture a slip containing a submicrometer powder of refractory oxide particles;
establishing a pressure difference to force the slip to pass through the fiber texture;
filtering a liquid of the slip that has passed through the fiber texture so as to retain the powder of refractory oxide particles inside said texture and to form a filled preform;
drying the filled preform; and
sintering the submicrometer powder of refractory oxide particles in order to form a refractory oxide matrix in the preform;
wherein during the step of forming the fiber texture the yarns are woven with a weave selected from the following weaves: interlock; multi-plain; multi-satin; and multi-serge; with warp and weft thread counts lying in the range 4 yarns/cm to 20 yarns/cm, and in that, after the compacting step, said fiber reinforcement presents a fiber volume fraction lying in the range 40% to 51%, such that spaces present between the yarns of the fiber reinforcement are of dimensions that are less than five times a maximum section of the yarns of the fiber reinforcement.

6. A method according to claim 5 , wherein the yarns of the preform are made of fibers constituted by one or more of the following materials: alumina; mullite; silica; an aluminosilicate; and a borosilicate.

7. A method according to claim 5 , wherein the submicrometer particles are made of a material selected from: alumina; mullite; silica; an aluminosilicate; and an aluminophosphate.

8. A method according to claim 5 , wherein the yarns of the fiber reinforcement comprise continuous fibers.

9. A part according to claim 1 , wherein the yarns of the fiber reinforcement comprise continous fibers.

Assignees

• Herakles
• Safran Ceram

Inventors

• Diss Pascal
• Bouillon Eric
• Lavasserie Eric

Classifications

• C04B2235/5228

  Silica and alumina, including aluminosilicates, e.g. mullite · CPC title

• C04B2235/447

  Phosphates or phosphites, e.g. orthophosphate or hypophosphite · CPC title

• C04B2235/616

  Liquid infiltration of green bodies or pre-forms · CPC title

• C04B2235/522

  Oxidic · CPC title

• C04B2235/5224

  Alumina or aluminates · CPC title