Analysis of Different Inhibitors for Magnesium Investment Casting

Herrero-Dorca, Nuria; Etxeberria, H Sarriegi; Hurtado, I.; Andrés, U.; Rodríguez, Pedro Pablo; Arruebarrena, Gurutze

doi:10.1088/1757-899x/27/1/012072

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Unitl now, several studies have been conducted to restrict the unsuitable metal-moulds reactions by changing the casting parameters [3][4][5]7,8] and using different shell materials and inhibitors [6,[9][10][11][12][13]. Silica, alumina, and zircon-based moulds illustrated effective reaction behaviour, due to having high-temperature melting points and free energy [3,5,[8][9][10][11]14]. Moreover, utilising inhibitors such as silica-free binders, KBF 4 , and NaBF 4 could enhance the reaction resistance of metal-mould [6,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Silica, alumina, and zircon-based moulds illustrated effective reaction behaviour, due to having high-temperature melting points and free energy [3,5,[8][9][10][11]14]. Moreover, utilising inhibitors such as silica-free binders, KBF 4 , and NaBF 4 could enhance the reaction resistance of metal-mould [6,13,14]. Among these factors, controlling the casting parameters was known as the simplest and cost-effective route to change the reaction behaviour of Mg with oxygen and moulds materials during the investment casting [3,15].…”

Section: Introductionmentioning

confidence: 99%

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Complex reaction behaviour of ceramic mould with the molten AZ91 alloy during investment casting

Zarandi

Malekan

Lotfpour

et al. 2021

Materials Science and Technology

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The effects of different pouring temperatures on the reaction behaviour of the ceramic shell with the molten Mg-9%Al-1%Zn-0.4%Mn (all are in wt-%) (AZ91) alloy during investment casting were studied. The scanning electron microscopy (SEM) micrographs with energy dispersive spectroscopy (EDS) analysis illustrated a complex interaction behaviour of the alloy with the mould components at various pouring temperatures. The MgO + MgAl2O4 compounds were formed on the surface of investment cast alloy at the pouring temperature of 600°C. With increasing the temperature to 650°C, the MgO compounds with the Al2O3 particles were observed at the interface of metal/mould. The Al2O3 particles were the main compound on the surface of alloy at the pouring temperature of 700°C. The formation of Al2O3 particles instead of the MgO compounds on the surface was related to the increase of magnesium evaporation by enhancement of the pouring temperature and also diffusion of Al2O3 particles from the ceramic shell to the surface of the alloy.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Complex reaction behaviour of ceramic mould with the molten AZ91 alloy during investment casting

Zarandi

Malekan

Lotfpour

et al. 2021

Materials Science and Technology

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An alternative approach in ceramic shell investment casting of AZ91D magnesium alloy: In situ melting technique

Jafari

Idris

Ourdjini

2014

Journal of Materials Processing Technology

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Effect of Inhibitor Coating of a Ceramic Mould on the Surface Quality of an AM60 Alloy Cast with Cr and V

Pisarek

Rapiejko

Święcik

et al. 2015

Archives of Foundry Engineering

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The work presents the results of the investigations of the effect of inhibitors coated on the internal walls of a ceramic mould on the quality of the obtained casts made of the AM60 alloy containing additions of chromium and vanadium. In order to reduce the reactivity of magnesium alloy cast by the technology of investment casting with the material of the mould and the ambient atmosphere, solid inhibitors were applied in the form of a mixture of KBF4 and H3BO3 after the stage of mould baking and before the mould’s being filled with the liquid alloy. For the purpose of examining the effect of the inhibitors on the surface quality of the obtained casts, profilometric tests were performed and the basic parameters describing the surface roughness, Ra, Rz and Rm, were determined.

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Analysis of Different Inhibitors for Magnesium Investment Casting

Cited by 3 publications

References 3 publications

Complex reaction behaviour of ceramic mould with the molten AZ91 alloy during investment casting

Complex reaction behaviour of ceramic mould with the molten AZ91 alloy during investment casting

An alternative approach in ceramic shell investment casting of AZ91D magnesium alloy: In situ melting technique

Effect of Inhibitor Coating of a Ceramic Mould on the Surface Quality of an AM60 Alloy Cast with Cr and V

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