Microstructural Studies of Cobalt Based Microwave Clad Developed on Martensitic Stainless Steel (AISI-420)

Hebbale, Ajit M.; Srinath, M. S.

doi:10.1007/s12666-017-1206-7

Cited by 19 publications

(3 citation statements)

References 28 publications

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“…The SEM image underscores the effectiveness of the microwave cladding process in achieving uniformity and integrity in the coating layer. The absence of cracks or defects suggests excellent adhesion between the cladding material, Ni-BaTiO3 mixture, and the SS-304 substrate [61]. This observation holds significant implications for the performance and durability of the coated SS-304 surface.…”

Section: Microstructure Investigationmentioning

confidence: 75%

Microwave-Assisted Cladding of Ni-BaTiO3 Mixture onto SS-304 for Enhancing the Wear Resistance and Surface Hardness

Parashar,

Ginni

et al. 2024

E3S Web of Conf.

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The present study focuses on achieving precise deposition of a Ni and 15% BaTiO3 particle mixture onto SS-304 substrates through meticulous preparation steps. Thorough cleaning of the SS-304 substrate eliminated contaminants, ensuring optimal adhesion. Simultaneously, the Ni-BaTiO3 mixture underwent preheating at 1200°C for 20 hours in a muffle furnace to eliminate moisture content, crucial for preventing coating defects. A uniform and crack-free cladding layer enhances the substrate’s resistance to wear, corrosion, and mechanical stresses, thereby extending its service life and improving overall functionality. The surface hardness of SS-304 experienced a substantial improvement of 39.90% following the cladding process with Ni and 15% BaTiO3. A sliding speed of 2 m/s was meticulously selected to replicate typical velocities encountered in practical applications, ensuring a realistic assessment of frictional behavior and wear resistance. Similarly, the sliding distance of 1000 m and an axial load of 5 N were precisely calibrated to simulate the mechanical stresses experienced during sliding contact, facilitating a thorough examination under relevant conditions. These carefully chosen parameters enabled the determination of key tribological properties essential for evaluating the performance of the cladded surface of SS 304 with Ni + 15% BaTiO3. The wear rate, measured at 0.0016 mm3/m, serves as a critical indicator, revealing the volume of material lost per unit distance of sliding. This parameter provides invaluable insights into the surface’s wear resistance and durability, crucial for assessing the longevity and performance of the cladded surface under abrasive conditions. Additionally, the coefficient of friction, determined to be 0.255, offers a quantitative measure of the surface’s frictional behavior during sliding contact.

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Section: Microstructure Investigationmentioning

confidence: 75%

Microwave-Assisted Cladding of Ni-BaTiO3 Mixture onto SS-304 for Enhancing the Wear Resistance and Surface Hardness

Parashar,

Ginni

et al. 2024

E3S Web of Conf.

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“…It is also observed that at higher sliding speed, interaction of the mating surfaces exists for shorter period; therefore, the clad surface loss is due to sever plastic flow which results in shearing of the displaced material. Higher hardness effectively obstructs the crack propagation and interaction on the developed clad surface [16]. Therefore, it is clearly observed from Table 6 that the developed clad shows minimum wear rate, which is due to the improved surface hardness of developed clad surface.…”

Section: Characteristics Of Sliding Wearmentioning

confidence: 94%

Wear studies of composite microwave clad on martensitic stainless steel

Hebbale¹,

Bekal²,

Srinath³

2019

SN Appl. Sci.

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In the present work, clads were developed through microwave energy which is as an emerging trend. Martensitic stainless steel (SS-420) is considered as a substrate material to improve its surface properties. In the present work, clad powder such as tungsten carbide and cobalt-based powders were used in the weight ratio of 1:0.12, respectively. The clads were developed using domestic microwave oven at 2.45 GHz frequency and 900 W power through microwave hybrid heating technique. After performing a number of trials, the clads were developed with good metallurgical bond with an exposure time of 30 min. The main objective of clad development is to obtain a good mechanical and tribological properties. Wear studies through pin-on-disc method of the developed clad was performed on the basis of Taguchi method (L9) orthogonal array. The main influencing factors considered are sliding distance, sliding speed and load. It is observed that the sliding distance is most dominating factor than load and sliding speed.

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“…The developed clad shown excellent metallurgical bond with 132% of higher wear resistance than the unclad surface. The cobalt based clad are also formed to be having superior erosion wear resistant [14,15].Very recently, many researcher explored the cladding process through microwave energy. The innovation of this microwave cladding has confirmed that the developed clad has least amount of porosity and least defect as well crack free structures.…”

Section: Introductionmentioning

confidence: 99%

Sliding wear studies of microwave clad versus unclad surface of stainless steel 304

Akshata¹,

Hebbale²,

Srinath³

2018

MATEC Web Conf.

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Abstract. Small and large scale (gas power plant, hydro power plant), automobile industries are suffering by failure of component. Sometimes, it is also observed that the component which was failed due to these reasons are very much costly and replacement of those also very difficult due to the complex geometry. By using Microwave hybrid heating, WC-12Co based clads were developed on austenitic stainless steel (SS304). Microwave clads were developed by introducing the preplaced, preheated powder for a duration of 15 min to microwave radiation at 2.45GHz frequency and 900 W power in domestic microwave applicator. By using optical microscope and scanning electron microscope (SEM), the developed clads were characterized. By using pin-on-disk, wear performance of the WC-12Co based clads and unclad samples were tested. It is observed that developed clad samples performed superior wear resistance than unclad samples.

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Microstructural Studies of Cobalt Based Microwave Clad Developed on Martensitic Stainless Steel (AISI-420)

Cited by 19 publications

References 28 publications

Microwave-Assisted Cladding of Ni-BaTiO3 Mixture onto SS-304 for Enhancing the Wear Resistance and Surface Hardness

Microwave-Assisted Cladding of Ni-BaTiO3 Mixture onto SS-304 for Enhancing the Wear Resistance and Surface Hardness

Wear studies of composite microwave clad on martensitic stainless steel

Sliding wear studies of microwave clad versus unclad surface of stainless steel 304

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