A straightforward trail study on analysis of thickness variation of black nickel coating on stainless steel surface for emissivity S. Karthick, S. Prasanna Raj Yadav, C. Joel, K. Senthilnathan, Ramya Suresh, S. Muthukumaran Department of Mechanical Engineering, SRM Easwari Engineering College (Autonomous), Ramapuram, Chennai, Tamil Nadu 600089, India article info Article history: Received 10 April 2020 Accepted 22 April 2020 Available online xxxx Keywords: Thickness Black nickel coating Stainless steel Heat Emissivity abstract The most important significant renewable energy for power production is solar radiation. In solar prod- ucts emissivity of the material used create more impact on performance. So this investigation study about the emissivity of black nickel coated stainless steel surfaces by varying the thickness of the coating. In this study three different thickness of coating are considered for investigating such as 0.2 mm, 0.3 mm and 0.4 mm of black nickel coating. In each thickness have three different heats such as 150 W, 180 W and 210 W are the input for identification of surface temperature of the black body and black nickel coated body. Ó 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Confer- ence on Newer Trends and Innovation in Mechanical Engineering: Materials Science. 1. Introduction In this investigation polished stainless steel surface used because of its easy availability [1–8]. The polished surfaces have more reflectivity and less emissivity [9–16]. In order to increase the emissivity of the stainless steel coating of black nickel is created [17–21]. These coatings create considerable impact on the emissivity of the coated surface than the uncoated surface [22–26]. Also the thickness of the coating leads to impact on the properties variations [27–32]. 2. Experimental procedure Black nickel coating is completed on Stainless steel surface through spray painting [33–37]. After completion of one coating surface is measured and compared with previous thickness [38–44]. There are three different specimens created with three different thickness of coating such as 0.2 mm, 0.3 mm and 0.4 mm respectively [45–49]. Then the surface dimensions depend on the standard block body dimensions for the corresponding test- ing equipment [50–54]. Thermocouples connected on the both sur- faces with equal interval for temperature measurements [55–59]. There are three different heat supplied such as 150 W, 180 W and 210 W applied for each thickness specimens [60–62]. In Tables 1–3 mentioned the experimental readings for thickness of 0.2 mm, 0.3 mm and 0.4 mm black nickel coated stainless steel surface respectively [63–67]. 3. Result and discussion The following formulas used in the Tables 1–3 for calculating the emissivity of the specimens TB ¼ TB 1 þ TB 2 þ TB 3 þ TB 4 ð Þ=4 TC ¼ TC 1 þ TC 2 þ TC 3 þ TC 4 ð Þ=4 E ¼ EB TB 4  T 4   = TC 4  T 4   EB ¼ 1 because it is black body ð Þ Emissivity for corresponding heat supplied for different thick- ness of coating is shown in Table 4 clearly. Figs. 1–3 point out the average black body temperature (TB), average black nickel coated stainless steel (TC) and inside the chamber temperature (Ti) for thickness of 0.2 mm, 0.3 mm and 0.4 mm black nickel coated stainless steel surface. Emissivity of Black nickel coated stainless steel surface body with respect to three different applied heats can explained in Fig. 4. Also Fig. 5 illustrate about emissivity of Black nickel coated stainless steel surface body with respect to three various thicknesses for the easy identification. https://doi.org/10.1016/j.matpr.2020.04.592 2214-7853/Ó 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Newer Trends and Innovation in Mechanical Engineering: Materials Science. Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: S. Karthick, S. Prasanna Raj Yadav, C. Joel et al., A straightforward trail study on analysis of thickness variation of black nickel coating on stainless steel surface for emissivity, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2020.04.592