Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Mon, Dec 23, 2024
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Volume 10, Issue 2 (June 2013)
IJMSE 2013, 10(2): 1-10 |
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H. Arabi, S. Rastegari, V. Ramezani, Z. Valefi. INFLUENCE OF HEAT TREATMENT PARAMETERS,TEMPERATURE AND TIME, ON WEAR AND MICROHARDNESS OF NICRBSI FLAME SPRAYED COATINGS APPLIED ON CK45 SUBSTRATES . IJMSE 2013; 10 (2) :1-10
URL: http://ijmse.iust.ac.ir/article-1-564-en.html
URL: http://ijmse.iust.ac.ir/article-1-564-en.html
Abstract: (28079 Views)
The objectives of this research were to find an economical way of reducing porosities in the microstructure of coatings deposited by flame spraying technique on CK45 steel and also trying to increase their cohesive strength to the substrate, so that the overall wear properties of this type of coating can be improved. So several specimens from this steel coated with NiCrBSi powder under specific conditions were subjected to various furnace heat treatment at 1000, 1025, 1050, 1075 and 1100 °C, each for periods of 5, 10 and 15 minute before cooling them in air. Tribological properties of treated coatings were evaluated by pin on disc method. The results show the highest wear resistance and microhardness values observed in one of the sample was due to lower amount of porosity and higher amount of very fine Cr2Ni3B6 particles precipitated homogeneously throughout its microstructure during specific heat treatment.
Keywords: NiCrBSi coatings, Flame spraying, Coating, Heat treatment, CK45, Wear, Microstructure, Microhardness
Type of Study: Research Paper |
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