High temp conductive material needed

I am looking to apply 10-15�m of a conductive material that will withstand 280�C. Our product consists of an alumina substrate sputtered with NiCr (2000�) and Copper (2000�) and 15-60 �m of electroplated copper (all metals patterned on the substrae). In the past, we have electroplated high-temp solder. For our latest application, we have our metal patterns on alumina (400�m in diameter). These patterns are electrically isolated withing another circular pattern, so electroplating cannot work. We need to bond these "island patterns" with others just like it. Ideally, we could bond at 300�C. If anyone has any ideas, please drop me a message. Thanks

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| I am looking to apply 10-15�m of a conductive material that will withstand 280�C. Our product consists of an alumina substrate sputtered with NiCr (2000�) and Copper (2000�) and 15-60 �m of electroplated copper (all metals patterned on the substrae). In the past, we have electroplated high-temp solder. For our latest application, we have our metal patterns on alumina (400�m in diameter). These patterns are electrically isolated withing another circular pattern, so electroplating cannot work. We need to bond these "island patterns" with others just like it. Ideally, we could bond at 300�C. If anyone has any ideas, please drop me a message. | Thanks | Try AI Technologies in Lawrenceville, NJ. They make all kinds of hihg-temp conductive stuff.

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