Park Young-Chul, Lee Chang-Been, Bang Seong-Sik, Choi Dong-Ki, Whang Woo-Sik, Lee Jae-Kwon, Han Jung-Woo, Jung Taek-Kyun
Department of Materials Process Engineering, Inha University, Incheon 22212, Republic of Korea.
Eutectic Korea Co., Ltd., Incheon 21700, Republic of Korea.
J Nanosci Nanotechnol. 2018 Mar 1;18(3):2049-2053. doi: 10.1166/jnn.2018.14974.
WC based alloy coatings included different mass percent of Co and Cr have been synthesized on high carbon steel by using a facile high velocity oxy-fuel spray method. The mechanical nature of the coating films has been investigated by micro vickers hardness and fracture toughness. X-ray diffraction (XRD) and EDX analyses indicate that the three different samples (WC-10Co-4Cr, WC-17Co, and WC-12Co) consist of pure WC, W, Cr, and Co constituents as well as W2C and Co6W6C phases. The SEM and image analysis results show that WC-10Co-4Cr condition has higher porosity than those of WC-17Co, and WC-12Co coatings. WC-17Co coating showed the highest value in the hardness and fracture toughness test among three different samples. The obtained results revealed that the mechanical properties of WC based alloy coatings synthesized by a facile high velocity oxy-fuel spray method is very sensitive to Co content.
通过一种简便的高速氧燃料喷涂方法，在高碳钢上合成了含有不同质量百分比钴和铬的WC基合金涂层。通过显微维氏硬度和断裂韧性研究了涂层薄膜的力学性能。X射线衍射（XRD）和能谱分析（EDX）表明，三个不同的样品（WC-10Co-4Cr、WC-17Co和WC-12Co）由纯WC、W、Cr和Co成分以及W2C和Co6W6C相组成。扫描电子显微镜（SEM）和图像分析结果表明，WC-10Co-4Cr涂层的孔隙率高于WC-17Co和WC-12Co涂层。在三个不同的样品中，WC-17Co涂层在硬度和断裂韧性测试中表现出最高值。所得结果表明，通过简便的高速氧燃料喷涂方法合成的WC基合金涂层的力学性能对钴含量非常敏感。
