초록 ▼

A laminated structural panel is formed of top, bottom, and one or more intermediate layers of material having low strength at high temperature and with perforated high temperature, high strength materials interleaved between the top, bottom and intermediate layers. Brazing material is clad on the to

A laminated structural panel is formed of top, bottom, and one or more intermediate layers of material having low strength at high temperature and with perforated high temperature, high strength materials interleaved between the top, bottom and intermediate layers. Brazing material is clad on the top and bottom layers and the intermediate layer or layers may be entirely of brazing material or clad on both sizes with brazing material, such that when the assembled stack is subjected to high temperature in a high vacuum environment brazing material is caused to melt and fill the perforations in the high strength material. A particular application is for structural panels, used as shelves in manufacturing electronic chips or displays where aluminum is advantageous because it does not outgas or release particles under the high temperature, high vacuum environment used to make the product. Aluminum, however, does not maintain its strength and stiffness at the high temperatures involved. To provide the strength so that the structural panels do not bend under load at high temperatures, the perforated layers of Inconel, stainless steel or magnetic material are incorporated and brazed in place so that they are completely covered by aluminum. Thus they are not exposed to the high temperature, high vacuum environment and cannot contaminate the product.

대표청구항 ▼

[ What is claimed:] [1.]1. A laminated structural panel comprising:a perforated plate of high strength, high temperature metal; andtop and bottom plates of metal having lower strength and stiffness than said perforated plate at temperatures over 250.degree. C., each said top and bottom plate having

[ What is claimed:] [1.]1. A laminated structural panel comprising:a perforated plate of high strength, high temperature metal; andtop and bottom plates of metal having lower strength and stiffness than said perforated plate at temperatures over 250.degree. C., each said top and bottom plate having a layer of braze material on the side adjacent said perforated plate;said top, bottom and perforated plates being brazed together in a high temperature, high vacuum atmosphere to cause said braze material to melt and substantially fill the perforations of said perforated plate.