Abstract
Plasma-sprayed molybdenum (Mo) coating was deposited on an AISI 1020 steel substrate. Laser remelting was used to eliminate the open pores and microcracks of the plasma-sprayed molybdenum coating. The quantitative investigation of porosity was carried out with the help of Biovis image analysis software. The microhardness was measured using a Vickers indenter. The influence of laser remelting on the wear volume loss of plasma-sprayed Mo was estimated by using a pin-on-disc wear test rig. The worn surface was characterized by scanning electron microscopy. The experimental results demonstrate that the porosity of the coating was decreased and microhardness was improved by laser remelting. The laser remelted plasma-sprayed Mo coating exhibits better wear resistance compared to the untreated plasma-sprayed Mo coating. It is concluded that laser remelting is a potential treatment for the plasma-sprayed coating. In this study, the laser remelted plasma-sprayed Mo coating exhibited of lowest porosity, higher hardness and better wear resistance.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Afzal M, Ajmal M, Nusair Khan A, Hussain A, Akhter R (2014) Surface modification of air plasma spraying WC-12%Co cermet coating by laser melting technique. Opt Laser Technol 56:202–206
Guozhi X, Jingxian Z, Yijun L, Keyu W, Xiangyin M, Pinghua L (2007) Effect of laser remelting on corrosion behavior of plasma-sprayed Ni-coated WC coatings. Mater Sci Eng A 460–461:351–356
Wang Y, Li C, Guo L, Tian W (2010) Laser remelting of plasma sprayed nanostructured Al2O3-TiO2 coatings at different laser power. Surf Coatings Technol 204(21–22):3559–3566
Gok MG, Goller G (2015) Microstructural evaluation of laser remelted gadolinium zirconate thermal barrier coatings. Surf Coatings Technol 276:202–209
Marek Szkodo MA, Bien A (2016) Effect of plasma sprayed and laser re-melted Al 2 O 3 coatings on hardness and wear properties of stainless steel. Ceram Int 42:11275–11284
Wang Y, Li C, Guo L, Tian W (2010) Laser remelting of plasma sprayed nanostructured Al2O3–TiO2 coatings at different laser power. Surf Coatings Technol 204(21–22):3559–3566
Li C, Wang Y, Wang S, Guo L (2010) Laser surface remelting of plasma-sprayed nanostructured Al2O3–13wt % TiO2 coatings on magnesium alloy. J Alloys Compd 503(1):127–132
Wang D, Tian Z, Shen L, Liu Z, Huang Y (2009) Influences of laser remelting on microstructure of nanostructured Al2O3-13 wt. % TiO2 coatings fabricated by plasma spraying. Appl Surf Sci 255(8):4606–4610
Serres N, Hlawka F, Costil S, Langlade C, Machi F (2011) An investigation of the mechanical properties and wear resistance of NiCrBSi coatings carried out by in situ laser remelting. Wear 270(9–10):640–649
García A, Cadenas M, Fernández MR, Noriega A (2013) Tribological effects of the geometrical properties of plasma spray coatings partially melted by laser. Wear 305(1–2):1–7
Fernanciez JE, Rodlciguez AR, Wang YR, Vijande R (1995) Sliding wear of a plasma-sprayed Al2O3 coating. Wear 183:417– 425
Liang GY, Wong TT, Macalpine JMK, Su JY (2000) A study of wear resistance of plasma-sprayed and laser-remelted coatings on aluminium alloy. Surf Coat Technol 127:233–238
Yuanzheng Y, Youlan Z, Zhengyi L, Yuzhi C (2000) Laser remelting of plasma sprayed Al 2 O 3 ceramic coatings and subsequent wear resistance. Mater Sci Eng A 291:168–172
Fu Y, Batchelor AW, Xing H, Gu Y (1997) Wear behaviour of laser-treated plasma-sprayed ZrO2 coatings. Wear 210:157–164
Kato K (2000) Wear in relation to friction — a review. Wear :151–157
Rao RN, Das S (2011) Effect of sliding distance on the wear and friction behavior of as cast and heat-treated Al–SiCp composites. Mater Des 32(5):3051–3058
Khedkar J, Khanna AS, Gupt KM (1997) Tribological behaviour of plasma and laser coated steels. Wear 205(1–2):220–227
Usmani S, Sampath S (1999) Time-dependent friction response of plasma-sprayed molybdenum. Wear 225–229:1131–1140
Fernhdez RVE, Cuetos JM (1996) comparison of wear behaviour of plama sprayed Al2O3 coatings with and without laser treatment. Tribiology Int 29(6):477–485
Mateos J, Cuetos JM, Fernandez E, Vijande R (2000) Tribological behaviour of plasma-sprayed WC coatings with and without laser remelting:274–281
Ramachandran CS, Balasubramanian V, Ananthapadmanabhan PV, Viswabaskaran V (2012) Understanding the dry sliding wear behaviour of atmospheric plasma-sprayed rare earth oxide coatings. Mater Des 39:234–252
Zhao XB, Ye ZH (2013) Microstructure and wear resistance of molybdenum based amorphous nanocrystalline alloy coating fabricated by atmospheric plasma spraying. Surf Coatings Technol 228:S266–S270
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
S., M.S., M., M. & Basavarajappa, S. Characterization of Laser Remelted Plasma-Sprayed Mo Coating on AISI 1020 Steel. Silicon 9, 741–751 (2017). https://doi.org/10.1007/s12633-016-9523-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12633-016-9523-8