The influence of acting mode of current on structure and mechanical properties of Ni-nanoTiN composite coatings
Menghua Wu, Jie He, Pengxiang Lv
Available Online March 2017.
- https://doi.org/10.2991/ifmca-16.2017.119How to use a DOI?
- Ni-nanoTiN composite coatings; acting mode of current; microstructure; surface morphology; mechanical properties
- Ni-nanoTiN composite coatings were electrode posited on 45 steel substrate by using the ultrasonic–electrode position for nickel sulfamate bath. The effects of direct current, positive pulse current, reverse (positive and negative) pulse on surface morphology, binding force, micro hardness, friction and wear performance of Ni-nanoTiN composite coating. The results show that the micro hardness is 322.68 HV0.1, the critical load of binding force is 25N, bigger cracks, rough surface, coarse grains and bad wearing of coating when direct current deposition; the micro hardness is 371.74 HV0.1, the critical load of binding force is 40N, smaller cracks, smooth surface, relatively small grain, better friction and wear performance of coating when positive current deposition; the micro hardness is 494.18 HV0.1, the critical load of binding force is over 50N, non cracks, more smooth surface, tiny grains, best friction and wear performance of coating when positive and negative pulse deposition. Positive and negative pulse deposition may further refine grain, improve surface morphology, increase nanoTiN particles co-deposition and enhance mechanical properties of composite coating.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Menghua Wu AU - Jie He AU - Pengxiang Lv PY - 2017/03 DA - 2017/03 TI - The influence of acting mode of current on structure and mechanical properties of Ni-nanoTiN composite coatings BT - Proceedings of the 2016 International Forum on Mechanical, Control and Automation (IFMCA 2016) PB - Atlantis Press SP - 762 EP - 771 SN - 2352-5401 UR - https://doi.org/10.2991/ifmca-16.2017.119 DO - https://doi.org/10.2991/ifmca-16.2017.119 ID - Wu2017/03 ER -