Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province

Hangzhou, China

Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province

Hangzhou, China
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Wu Y.,Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province | Wu Y.,Chinese Ministry of Water Resources | Fu L.,Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province | Fu L.,Chinese Ministry of Water Resources | And 8 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2017

The advanced SQC-100 supersonic plasma spraying system has both high speed of HVOF, and deposition efficiency of APS, and it can effectively reduce the cost of the coating under the premise of quality assurance. In this study, SQC-100 supersonic plasma spraying technique will be used to spray WC-10Co-4Cr coating, and study its erosion resistance. The results showed that: the porosity is 0.77%, hardness is 1 210 HV0.2, binding strength is 72 MPa. Coating performance basically reached HVOF the same level. In addition, the obtained coating has good resistance to erosion and sediment properties, erosion Resistance of coating is 3.88 times than ZG0Cr13Ni4Mo stainless steel. The ductile trancrystalline fracture is the main propagating mode of cracks in the coating. WC-10Co-4Cr coating has a wide range of applications of hydraulic machinery parts in the field of high sediment-laden flow. © 2017, Chongqing Functional Materials Periodical Press Co. Ltd. All right reserved.


Wu Y.-M.,Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province | Wu Y.-M.,Standard & Quality Control Research Institute | Zhao J.,Water Conservancy Machinery and Remanufacturing Technology Engineering Laboratory of Zhejiang Province | Zhao J.,Standard & Quality Control Research Institute | And 7 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2015

Nano WC-10Co-4Cr coatings and chromium plating were prepared by HVOF spraying and electroplating. The performance and service time of the coatings and plating's were investigated by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), hardness measurement, wear testing machine, electrochemical workstation, wear corrosion accelerated testing machine. The results show that the micro-hardness, wear resistance, binding strength of the coatings are much better than that of the plating's, and the coatings have high compactness, but the corrosion resistance of the WC coatings is slightly lower than that of chromium plating's but also far higher than that of the matrix, Wear and corrosion accelerated testing results show that the service life of the coatings is 5 times than that of the chromium plating's. ©, 2015, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.

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