吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 198-201.

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Microstructures and properties of plasma surfaced NiCrBSi+WC/Co layers

SHANG Yan-geng1, WANG Wen-quan2, HUANG Shi-ming2, LI Xiu-juan1, ZHANG Gui-lan1   

  1. 1. Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China;
    2. Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun 130022, China
  • Received:2011-01-24 Online:2011-09-30 Published:2011-09-30

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Abstract:

Microstructures and properties of plasma surfaced NiCrBSi+20%WC/Co layer prepared on the die steel(H13) substrate were investigated.The study showed that the interface boundary existed between the layer and substrate.compared with the typical microstructures of welded joint,the similar columnar grains in the layer perpendicular to the interface line were observed,which were never seen in the plasma sprayed coating.The conclusion could be drawn that the bonding between the NiCrBSi+20%WC/Co layer and H13 substrate belonged to the metallurgical cohesion.The XRD analysis showed that the main phases in the layer includedγ-(Fe,Ni),Cr7BC4,Ni4B3,Cr7C3 and Co7W6,which brought higher strength and higher hardness to the surfaced layer than the H13 substrate.

Key words: materials synthesis and processing technology, plasma surfaced layer, NiCrBSi+WC/Co, microstructures and properties

CLC Number: 

  • TG457


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