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| Analysis of the microstructure of Fe-TiC-TiN cladding layer on Q235 steel surface |
| Liu li-xin，Tang Jing，Zhang Jie-Xi |
| College of Mechanical Engineering，Henan Polytechnic Institute, Henan Nanyang 473000 |
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Abstract In this paper, A Fe-TiC-TiN coating is obtained on the Q235 soft steel used Plasma cladding technology using Fe310 ferrobased self-fused alloy powder + TiC powder as cladding material. At the addition ratio of 3 %, 6 %, and 10 % of TiC, the phase composition and microstructure of the cladding layer were analyzed by means of scanning electricity and X-ray diffraction experiments. The microhardness and wear resistance of the cladding layer were measured by microhardness meter and friction wear tester，The results show that the combination between the cladding layer and the matrix is metallurgical; The highest hardness of cladding layer is up to 1 643HV0.5, is 6.3 times of the substrate. The relative wear resistance is 5.8 times of the substrate.
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Received: 22 June 2018
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2019, Vol. 29 
