Application of in-situ synthesis of nickel-based anti-abrasion coating by argon-arc cladding on plowshare

In order to improve the wear-resistance property of carbon steel, the in-situ synthesis of TiC/Ni composite coating by argon-arc cladding technology was conducted and its application for plowshare was discussed. The microstructure and properties of the coating were investigated by metallographic microscope, scanning electron microscope, X-Ray diffractometer, transmission electron microscope and microhardness tester model. The wear-resisting property of the cladding was tested on home-made abrasion tester. The results show that excellent bonding between the coating and the carbon steel substrate is strengthened by the strong metallurgical interface, and the coating is uniform, continuous and almost defect-free. The microstructure of the cladding is mainly composed of γ-Ni austenitic dendrite, CrB, M23C6, TiB2 and spherical TiC ceramic particle which is synthesized in-situ and dispersively distributed in the cladding. The maximum hardness of the cladding is HV0.21000, and appears graded distribution. The anti-abrasive test results show that the cladding is good at anti-abrasive and the abrasive performance is better than 65Mn steel treated by quenching and tempering. The field test results show that the technology is feasible to the manufacture and remanufacture of the wearable parts of agricultural machinery.