WO1999031958A8 - Improved method for making a metal matrix composite body by a spontaneous infiltration process - Google Patents

Improved method for making a metal matrix composite body by a spontaneous infiltration process

Info

Publication number
WO1999031958A8
WO1999031958A8 PCT/US1998/026949 US9826949W WO9931958A8 WO 1999031958 A8 WO1999031958 A8 WO 1999031958A8 US 9826949 W US9826949 W US 9826949W WO 9931958 A8 WO9931958 A8 WO 9931958A8
Authority
WO
WIPO (PCT)
Prior art keywords
preform
infiltration enhancer
vapor
permeable mass
infiltration
Prior art date
Application number
PCT/US1998/026949
Other languages
French (fr)
Other versions
WO1999031958A2 (en
WO1999031958A9 (en
Inventor
Matthew E Stahley
Allyn L Mccormick
Original Assignee
Lanxide Technology Co Ltd
Matthew E Stahley
Allyn L Mccormick
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanxide Technology Co Ltd, Matthew E Stahley, Allyn L Mccormick filed Critical Lanxide Technology Co Ltd
Publication of WO1999031958A2 publication Critical patent/WO1999031958A2/en
Publication of WO1999031958A8 publication Critical patent/WO1999031958A8/en
Publication of WO1999031958A9 publication Critical patent/WO1999031958A9/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1005—Pretreatment of the non-metallic additives
    • C22C1/1015—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1057—Reactive infiltration
    • C22C1/1063—Gas reaction, e.g. lanxide
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
    • C22C47/02—Pretreatment of the fibres or filaments
    • C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Abstract

Improvements in processing metal matrix composite materials by infiltration are disclosed. Specifically, an infiltration enhancer precursor is provided to a permeable mass or preform in vapor form, and further, the permeable mass or preform assists in confining the vapor. At least at some point during processing, an infiltrating atmosphere is communicated with the permeable mass or preform. The atmosphere is a particular type of infiltrating atmosphere which is capable of chemically converting the infiltration enhancer precursor to infiltration enhancer. In one embodiment, the vapor phase infiltration enhancer precursor is provided in vacuo or in an inert atmosphere initially, the reactive infiltrating atmosphere being provided only when a desired concentration of infiltration enhancer precursor vapor in the permeable mass or preform has been achieved. In another embodiment, a reactive infiltrating atmosphere is provided concurrently with vapor-phase infiltration enhancer precursor under conditions whereby infiltration enhancer is deposited as a coating layer on one or more surfaces of the permeable mass or preform. A molten matrix metal is able to readily wet and infiltrate such a layer. This infiltrated layer permits more rapid infiltration of the bulk of the preform. The infiltrated layer also provides the formed MMC body with an MMC surface whose properties may be similar to or different from those of the underlying MMC body.
PCT/US1998/026949 1997-12-19 1998-12-18 Improved method for making a metal matrix composite body by a spontaneous infiltration process WO1999031958A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6832297P 1997-12-19 1997-12-19
US60/068,322 1997-12-19

Publications (3)

Publication Number Publication Date
WO1999031958A2 WO1999031958A2 (en) 1999-07-01
WO1999031958A8 true WO1999031958A8 (en) 1999-10-07
WO1999031958A9 WO1999031958A9 (en) 1999-11-11

Family

ID=22081817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/026949 WO1999031958A2 (en) 1997-12-19 1998-12-18 Improved method for making a metal matrix composite body by a spontaneous infiltration process

Country Status (1)

Country Link
WO (1) WO1999031958A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6635357B2 (en) 2002-02-28 2003-10-21 Vladimir S. Moxson Bulletproof lightweight metal matrix macrocomposites with controlled structure and manufacture the same
US10364491B2 (en) 2016-11-02 2019-07-30 Georgia Tech Research Corporation Process to chemically modify polymeric materials by static, low-pressure infiltration of reactive gaseous molecules

Also Published As

Publication number Publication date
WO1999031958A2 (en) 1999-07-01
WO1999031958A9 (en) 1999-11-11

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