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Development of Iron Based Feedstocks andTheir Processing by Eletctric Arc Spraying


Wissenschaftlicher Fachbeitrag

Authors: Prof. Dr.-Ing. Kirsten Bobzin, Dr.-Ing. Lidong Zhao, Dipl.-Ing. Thomas Schläfer
Iron based wire feedstocks can represent a technical as well as economical alternative to conventional carbide reinforced feedstocks for wear protection applications. Within the frame of this work, different iron based feedstocks were developed as cored wires. In order to produce wear resistant coatings, the wires contain up to 6 wt. % of boron. When processed by thermal spraying, these feedstocks form hard, partially amorphous coatings with embedded nanocrystalline boridic precipitations. In order to further improve the wear resistance, for some wires chromium carbide was blended into the powder filling. Coatings were produced from all feedstocks by electric arc spraying. The coatings were investigated by light optical microscopy, X-ray diffraction and hardness measuring.
Pages: 58 - 63
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