Effect of plating parameters on microstructure and tribological properties of Co-BN(hexagonal) nano composite coatings

详细信息    查看全文

• 作者：Zahra SHAHRI ; Saeed Reza ALLAHKARAM
• 关键词：Co&ndash ; BN coating ; frequency ; duty cycle ; electrodeposition ; composite ; microhardness ; tribological behavior
• 刊名：Transactions of Nonferrous Metals Society of China
• 出版年：October, 2013
• 年：2013
• 卷：23
• 期：10
• 页码：2929-2938
• 全文大小：6347 K

文摘

Effects of current density, duty cycle and frequency on microstructure and particles content of electrodeposited Co-BN (hexagonal) nano composite coatings were analyzed by SEM, FESEM, EDS, AFM and XRD techniques. The microhardness, tribological behavior and wear mechanism were also investigated. Generally, as the current density and frequency increased, the particles content and microhardness of the coatings increased firstly and then decreased. Moreover, by reducing duty cycle, more particles were incorporated and higher microhardness was obtained. The best tribological behavior was achieved under the conditions: duty cycle of 10%, frequency of 50 Hz and current density of 100 mA/cm².