Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1989-12-20
1992-02-11
Lechert, Jr., Stephen J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428551, 428553, 428650, 428680, 426681, 427 38, 427415, B22F 300
Patent
active
050875299
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a laminate material or a laminate workpiece comprising a functional layer, particularly a friction bearing layer, applied to one of the surfaces of a solid backing layer, for instance as a solid dispersion layer with a matrix having at least one fusible component and dispersion elements which at least in the solid state are insoluble in the material of the matrix, or at least soluble in smaller amounts than the ones present, or made of another mixture suitable for tribological purposes consisting of components not soluble in one another or soluble only in amounts smaller than the ones present. The invention relates also to a process for the production of such laminate materials and laminate workpieces.
THE RELATED ART
All heretofore-known laminate materials and laminate workpieces of this kind have a relatively coarse structure of the functional layer formed as a solid dispersion layer. Therefore, this coarse structure presents considerable disadvantages and drawbacks, especially when such laminate materials and laminate workpieces are used for tribological purposes. In these known laminate materials and laminate workpieces, the bonding of the functional layer to the backing layer is problematic. It is known from DE-OS 26 56 203 to create a laminate material suitable for tribological purposes by thermokinetically applying a dispersion alloy tending towards dissociation, particularly an AlSn dispersion alloy, onto a coarse substrate formed by a sintered structure. According to the aforementioned German Patent, whenever an intermingling of the sintered structure and the dispersion layer is to be obtained under partial welding, it is necessary to make the sintered substrate quite thick, which is unacceptable when functional layers with a reduced thickness have to be produced. However, generally the wear- and corrosion resistance of such known AlSn two-layer composite slide bearings has been proven by experience to be excellent, although this resistance does not apply to all individual cases.
This situation was taken into account and three-layer bearings with sputtered (cathodic sputtering) AlSn have been developed. The layers produced according to this method have an extremely fine Sn-distribution and a high strength. These known slide bearings with sputtered AlSn sliding layer for the high load-carrying capacity of a steel/lead bronze bearing are advantageously combined with the wear- and corrosion-resistance of AlSn alloys, so that such slide bearings behave well in use, but their production costs are very high.
It is therefore an object of the present invention to make available a new kind of construction for laminate materials and laminate workpieces, particularly slide bearings, wherein the advantageous combination of load-carrying capacity and high wear- and corrosion resistance is also achieved, but whereby this new composite material or new composite workpieces can be produced at a much lower cost than laminate materials and laminate workpieces with sputtered functional layers, so that laminate materials or workpieces with such high qualifications can also be produced on an industrial scale in large series.
SUMMARY OF THE INVENTION
According to the invention, this problem is solved in the laminated materials or laminated workpieces of the invention due to the fact that the functional layer formed through air-plasma spraying of fine powders containing the fusible matrix components and the dispersion components which are either not soluble in the matrix material or soluble only in amounts smaller than the amount present, is formed as a solid dispersion layer with a matrix wherein the dispersion elements are distributed as finely dispersed particles of components which are not dissolved in the matrix, and this functional layer is bonded to the surface of the backing layer directly or through a thin intermediate adhesive layer, whereby the backing layer in the zone bordering the functional layer has a reduced thickness of approximately 25 .mu.m to 300
REFERENCES:
patent: 2998322 (1961-08-01), Strate
patent: 4099804 (1978-07-01), Baker et al.
patent: 4172622 (1979-10-01), Baker et al.
patent: 4193645 (1980-03-01), Baker et al.
patent: 4404263 (1983-09-01), Hodes et al.
patent: 4666787 (1987-05-01), Bickle et al.
patent: 4830933 (1989-05-01), Hodes et al.
patent: 4889772 (1989-12-01), Bergmann et al.
patent: 4900639 (1990-02-01), Hodes et al.
Engel Ulrich
Wegner Karl-Heinz
Dubno Herbert
Glyco Aktiengesellschaft
Lechert Jr. Stephen J.
LandOfFree
Laminate material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laminate material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laminate material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-781301