Molded article made of a composite material including metals and nonmetallic substances

• US 4,861,638 A
• Filed: 06/03/1988
• Issued: 08/29/1989
• Est. Priority Date: 06/04/1987
• Status: Expired due to Fees

• Current Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbH
• Original Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbH
• Inventors: Huether, Werner
• Primary Examiner(s): Thomas, Alexander S.
• Application Number:
  US07/202,798
• Time in Patent Office: 452 Days
• Field of Search: 428/76, 428/71, 428/72, 428/74, 428/68, 428/73
• US Class Current: 428/71
• CPC Class Codes: B32B 15/04 comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042
• CPC Class Codes: B32B 18/00 Layered products essentially comprising ceramics, e.g. refractory products
• CPC Class Codes: C04B 2237/341 Silica or silicates
• CPC Class Codes: C04B 2237/36 Non-oxidic
• CPC Class Codes: C04B 2237/363 Carbon
• CPC Class Codes: C04B 2237/365 Silicon carbide
• CPC Class Codes: C04B 2237/368 Silicon nitride
• CPC Class Codes: C04B 2237/38 Fiber or whisker reinforced
• CPC Class Codes: C04B 2237/84 Joining of a first substrate with a second substrate at least partially inside the first substrate, where the bonding area is at the inside of the first substrate, e.g. one tube inside another tube
• CPC Class Codes: C04B 30/02 containing fibrous materials
• CPC Class Codes: C04B 35/52 based on carbon, e.g. graphite
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/50 with inorganic materials
• CPC Class Codes: C04B 41/85 with inorganic materials
• CPC Class Codes: C23C 30/00 Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process C23C26/00, C23C28/00 take precedence
• CPC Class Codes: F01D 5/282 Selecting composite materials, e.g. blades with reinforcing filaments
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft
• CPC Class Codes: Y10T 428/23 Sheet including cover or casing
• CPC Class Codes: Y10T 428/233 Foamed or expanded material encased
• CPC Class Codes: Y10T 428/236 Honeycomb type cells extend perpendicularly to nonthickness layer
• CPC Class Codes: Y10T 428/237 : Noninterengaged fibered material encased [e.g., mat, batt, etc.]

Abstract

A composite material of metals and nonmetallic substances exhibits the following structure:

(a) a first material of high mechanical strength and

(b) a second material of high oxidation-resistance, both at elevated

temperatures are arranged so that the latter completely envelopes the former.

Claims

1. A shaped article, comprising a plurality of individual members made of a first material having a high mechanical strength and a low oxidation resistance at high temperatures, a matrix made of a second material having a lower mechanical strength than said first material and a higher oxidation resistance than said first material at said high temperatures, said individual members being fully embedded in said matrix, said individual members being so dimensioned and arranged in rows and staggered columns that the members of one row partially overlap the members of the next row without any contact between said members to form an intermediate space all around each member, said intermediate space being filled by said second material so that said members form a running bond inside said shaped article.

2. The article of claim 1, wherein said members made of said first material are enveloped by said second material forming said matrix by spraying, pressing, or casting.

3. The article of claim 1, wherein said first material of which said individual members are made, is selected from the group consisting of carbon, graphite, and synthetic diamond, and wherein said second material forming said matrix is selected from the group consisting of silicon, silicon dioxide, silicon carbide, silicon nitride Si₃ N₄, glass, and glass ceramic containing silicon dioxide.

4. The article of claim 1, wherein said first material of said individual members are made, is selected from the group consisting of metal and metal alloys, and wherein said second material forming said matrix is selected from the group consisting of ceramic, cermet, glass, glass ceramic, and glass metal composites.

5. The article of claim 1, further comprising a bonding layer of a third material between said individual members and said matrix.

6. The article of claim 5, wherein said bonding layer has interruptions therein, whereby bonding is prevented or at least reduced at said interruptions.

7. The article of claim 1, wherein said individual members have one of the following forms selected from the group consisting of sheets, matting, netting, fabric, laminate, sponge, foam, honeycomb, each dimensioned to permit said overlap, said forms having been soaked, infiltrated, or impregnated with the second material forming said matrix, or with a bonding third material prior to embedding said individual members in said matrix of said second material.

8. The article of claim 1, when used as a high temperature resistant component.