Analysis Of The Effect Of Polysilazane Concentartion And Curing Temperature Variations In Nanoceramic Coating Process Of AISI 1020 Steel On Mechanical Properties

Fathurrahman, Muhammad (2024) Analysis Of The Effect Of Polysilazane Concentartion And Curing Temperature Variations In Nanoceramic Coating Process Of AISI 1020 Steel On Mechanical Properties. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

In this study, a polishing coating method was employed, where the solution used was polysilazane, and N-Butyl Acetate served as the solvent. The advantage of this method lies in its suitability for smaller applications or steel surfaces with complex shapes. However, this method can result in a more uneven coating compared to other application methods, necessitating strict process control to ensure good quality nanoceramic coatings. This research
was conducted with variations in solution concentration and curing temperature as parameters.
For the polysilazane mixture solution, the compositions were 10%, 20%, and 30% polysilazane durazane1500rc. Meanwhile, for the curing temperature variations, they were set at 100°C, 150°C, and 200°C. The hardness testing on the nanoceramic coating of AISI 1020 steel showed a significant increase in substrate hardness values from 129 HVN to 153.2 HVN. Chemical composition differences between polysilazane solution concentrations and curing temperatures played a crucial role in the variation of hardness improvement on the substrate, with potential influence on microstructure and phase formation. A 30% polysilazane concentration solution
provided a higher hardness improvement compared to 10% and 20% concentrations at all drying temperatures. From the adhesion testing results, optimal adhesion strength was achieved at a drying temperature of 100°C with a 10% polysilazane concentration and at a drying temperature of 150°C with a 20% polysilazane concentration with the values 21.4 MPa and 20.7 MPa, SEM analysis revealed differences in the coating surface for each concentration, with a decrease in adhesion strength reflecting cohesive and adhesive zones. This study highlights that excessively high concentration solutions may result in less than optimal adhesion strength in nanoceramic coatings. Contact angle testing showed a similar trend, depicting changes in contact angle with different percentages of polysilazane solution composition for all coatings. During the cross-linking reaction, the formation of hydrophobic groups can be explained by the combined effect of hydrolysis and condensation reactions of polar groups. The largest contact angle was obtained on AISI 1020 steel coated with a 30% polysilazane concentration, with an average value of 95.12°.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	AISI 1020 Steel, Nanoceramic, Polysilazane, Concentration, Curing Temperature
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment T Technology > TN Mining engineering. Metallurgy > TN752.Q4 Metals--Quenching
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Fathurrahman
Date Deposited:	09 Feb 2024 07:54
Last Modified:	09 Feb 2024 07:54
URI:	http://repository.its.ac.id/id/eprint/106493

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