The effect of Mo content in plasma-sprayed Mo-NiCrBSi coating on the tribological behavior

Niranatlumpong, Panadda; Koiprasert, Hathaipat

doi:10.1016/j.surfcoat.2010.07.017

Cited by 52 publications

(30 citation statements)

References 17 publications

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“…This is because loosely adhered semi-melted splats detached from coating surface and acts as an abrasive particle. The presence of MoO 2 can help improve the dry sliding condition of the coating (Laribi et al, 2007;Khedkar et al, 1997;Niranatlumpong and Koiprasert, 2010). Unsealed coating consists of open pores which allow easier crack propagation.…”

Section: Discussionmentioning

confidence: 99%

The effect of sealing on the wear behaviour of plasma sprayed Mo coating

Manjunatha

Basavarajappa

2015

IJSURFSE

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Plasma sprayed molybdenum coating thickness of 300 μm was deposited on steel substrate. Electro deposition of nickel has been used to fill the open pores and micro cracks of the plasma sprayed molybdenum coating. The quantitative investigation of porosity was carried out with image analysing software. The microhardness was measured using a Vickers' indenter. The influence of sealing on wear resistance of plasma prayed molybdenum was estimated by using pin on disk wear test rig. The worn surface was characterised by scanning electron microscopy. The experimental results indicated that porosity of coating was decreased and microhardness was increased by sealing. It is concluded that electro deposition of Ni is a promising sealing treatment for sprayed coating. In this study, sealed plasma sprayed coating consisting of lowest porosity, the higher hardness and better wear resistance.Reference to this paper should be made as follows: Manjunatha S.S. and Basavarajappa, S. (2015) 'The effect of sealing on the wear behaviour of plasma sprayed Mo coating', Int.

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Section: Discussionmentioning

confidence: 99%

The effect of sealing on the wear behaviour of plasma sprayed Mo coating

Manjunatha

Basavarajappa

2015

IJSURFSE

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“…The application of wear-resistant coatings and solid lubricant coatings has been successfully implemented in Thai industry. In addition to reducing the use of materials, a suitable coating application can help reduce the amount of energy required for operation due to reduction in friction [35]. …”

Section: Materials Engineering and Manufacturingmentioning

confidence: 99%

Material research for environmental sustainability in Thailand: current trends

Niranatlumpong

Ramangul

Dulyaprapan

et al. 2015

Science and Technology of Advanced Materials

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This article covers recent developments of material research in Thailand with a focus on environmental sustainability. Data on Thailand’s consumption and economic growth are briefly discussed to present a relevant snapshot of its economy. A selection of research work is classified into three topics, namely, (a) resource utilization, (b) material engineering and manufacturing, and (c) life cycle efficiency. Material technologies have been developed and implemented to reduce the consumption of materials, energy, and other valuable resources, thus reducing the burden we place on our ecological system. At the same time, product life cycle study allows us to understand the extent of the environmental impact we impart to our planet.

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“…In [1,2], the authors presented examples of successful production of coatings of the Mo þ NiCrBSi system by plasma spraying. However, in spraying powders of different alloys, it is not possible to produce a stable metallic bond between the coating and the parent metal.…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Technology of coaxial laser gas-powder surfacing of alloys of the Mo+NiCrBSi system

Yegunov

Artemenko

Konoreva

et al. 2014

Welding International

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The results of investigations of the special features of the coaxial laser surfacing of the Mo þ NiCrBSi powder alloy are presented. The dependences of the parameters of dissolution of iron in the deposited beads on the parameters of the surfacing process are determined. Technological recommendations are proposed.The coatings of nickel-based alloys, especially of the NiCrBSi system, ensure a corrosion wear resistance level comparable with the properties of alloys based on expensive and scarce cobalt, even at high temperatures. To improve the tribological properties in the conditions of dry sliding and reduce the friction coefficient, molybdenum is added to the coating. In [1,2], the authors presented examples of successful production of coatings of the Mo þ NiCrBSi system by plasma spraying. However, in spraying powders of different alloys, it is not possible to produce a stable metallic bond between the coating and the parent metal. A more promising method is the coaxial laser gas powder surfacing (CGPS) [3 -5]. The coaxial system of feeding the powder into the surfacing zone in comparison with the lateral feeding method is characterized by smaller powder losses and can be used to solve the problem of separate melting of the substrate and the filler powder. Other advantages of CGPS include the minimum thermal effect on the parent material, the wider range in which the parameters of the surfacing process are varied, the resistance to technological perturbations, the possibility of depositing surfaces with complicated geometry, and also the ecological efficiency of the process.The aim of the present work is the development of technological recommendations for the CGPS process of composite materials of the Mo þ NiCrBSi system with simultaneous addition of all components to the melting zone. The main requirement for the deposited metal is the minimum dissolution of the refractory particles of molybdenum, required for the formation of metallic bonds, and also melting of the parent metal. Other requirements are the minimum pore formation and the absence of cracks, and also the optimum geometry of the deposited beads.

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The effect of Mo content in plasma-sprayed Mo-NiCrBSi coating on the tribological behavior

Cited by 52 publications

References 17 publications

The effect of sealing on the wear behaviour of plasma sprayed Mo coating

The effect of sealing on the wear behaviour of plasma sprayed Mo coating

Material research for environmental sustainability in Thailand: current trends

Technology of coaxial laser gas-powder surfacing of alloys of the Mo+NiCrBSi system

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