论文信息 - Joining of Mo to CoSb3 by spark plasma sintering by inserting a Ti interlayer

Joining of Mo to CoSb3 by spark plasma sintering by inserting a Ti interlayer

Abstract CoSb 3 -based skutterudite compounds are promising candidates as advanced thermoelectric (TE) materials used in TE power generation. The electrode fabrication is one of the key techniques in constructing TE elements for the practical application. In the present study, sintering of CoSb 3 powder and joining of CoSb 3 to molybdenum electrode have been simultaneously performed by spark plasma sintering (SPS) technique. The insertion of Ti interlayer between Mo and CoSb 3 is effective to join CoSb 3 to Mo by forming an intermediate layer of TiSb at the Ti–CoSb 3 boundary and a composition–gradient alloy layer at the Ti–Mo boundary. Potential voltage measurement results indicated that CoSb 3 /Ti/Mo joint interface has a low electrical resistance. The CoSb 3 /Ti/Mo joints also have a moderately high shearing strength and high thermal duration stability.

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