Tribological behaviour of plasma and laser coated steels

Khedkar, Jaydeep; Khanna, A. S.; Gupt, K. M.

doi:10.1016/s0043-1648(96)07291-2

Cited by 38 publications

(26 citation statements)

References 3 publications

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“…Usmani and Sampath 15 and Khedkar et al 21 also observed that material loss of the sprayed coating increases with increase in the sliding distance. When the sliding between the coated pin and steel disc commences, the asperities of the stationary slider plow into the harder moving parts and debris will be generated due to this plowing.…”

Section: Discussionmentioning

confidence: 91%

Effect of powder particle size on wear resistance of plasma sprayed molybdenum coating

Manjunatha

Basavarajappa

2014

Proceedings of the Institution of Mechanical Engineers, Part J:

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Plasma-sprayed molybdenum coatings are used in automotive, aerospace, pulp and paper industries in order to guard the machine parts against wear and corrosion. In this work, an attempt has been made to study the effect of particle size on wear behaviour of molybdenum coated steel. Two types of Mo coatings were deposited on American Iron and Steel Institute (AISI) 1020 steel substrate, one is with particle size of 15-40 mm (type I) and another one is with 40-90 mm (type II) using plasma spraying. The microstructures and worn surface morphologies of the coatings were analysed by means of X-ray diffractometer and scanning electron microscopy. It was found that the as-sprayed type I and type II coatings consist of molybdenum (Mo) as the major phase and molybdenum oxide (MoO 2 ) as the minor phases. For the evaluation of influence of coating powder particle size on wear characteristics, the sliding wear tests were performed on a pin-on-disc apparatus. The variation of volume loss with applied load, sliding speed and sliding distance was monitored. The type I sprayed coating exhibits better wear resistance. Tribological testing was also supported by metallographic examination for the identification of wear mechanisms. It was verified that the wear of coating is dominated by fracture of splats, crack propagation, delamination and plowing.

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Section: Discussionmentioning

confidence: 91%

Effect of powder particle size on wear resistance of plasma sprayed molybdenum coating

Manjunatha

Basavarajappa

2014

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…The chemical compositions of AISI 4140 and ASTM A36 are listed in Tables 1 and 2, respectively. High energy surface treatment processes using ultra-hard ceramic materials as coatings have been studied to develop wear resistant steels to meet the extreme requirements of wear, oxidation and corrosion resistance (Agarwal, 2000;Khedkar et al, 1997). Formation of metallurgically sound interface between the coating and the substrate is very critical for coating development.…”

Section: Experimental Materialsmentioning

confidence: 99%

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Tao¹,

Honaker²,

Parekh³

2007

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Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral and coal processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratory-simulated wear tests were conducted to evaluate the tribological performance of the coated components. Test results indicate that the wear resistance of ASTM A36 (raw coal screen section) and can be significantly increased by applying HDI and LSE coating processes. Field testing has been performed using a LSE-treated screen panel and it showed a significant improvement of the service life.III

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“…It should be noted that coating steels using high energy process such as laser with ultrahard ceramic particles has been developed to meet the extreme requirements of wear, oxidation and corrosion resistance (Agarwal, 2000;Khedkar et al, 1997). As a result, metallurgically sound interface between the coating and the substrate can be formed.…”

Section: Experimental Materialsmentioning

confidence: 99%

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Tao¹,

Blue²

2006

View full text Add to dashboard Cite

Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratorysimulated wear tests were conducted to evaluate the tribological performance of the coated components. Test results indicate that the wear resistance of ASTM A36 (raw coal screen section) and can be significantly increased by applying HDI and LSE coating processes. Field testing has been performed using a LSE-treated screen panel and it showed a 2 times improvement of the service life.II

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Tribological behaviour of plasma and laser coated steels

Cited by 38 publications

References 3 publications

Effect of powder particle size on wear resistance of plasma sprayed molybdenum coating

Effect of powder particle size on wear resistance of plasma sprayed molybdenum coating

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

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