Mechanical Activation of Mica

Zivanovic, D Vladimir; Andrić, Ljubiša; Sekulić, Živko; Milošević, Siniša

doi:10.1007/978-1-4419-8666-5_29

Cited by 1 publication

(2 citation statements)

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“…Refractory coatings and their production processes were designed according to the works [3,8,22], our works [24,26] and domestic norms [43,44]. Based on the analysis of the mechanical activation influence on the filler grain size and shape [27,[28][29][30][31][32][33] as well as of the filler grain size influence on coating suspension sedimentation stability [3,7], cordierite-based, mechanically activated fillers were chosen: first filler C 2 (100% -20 x10 -6 m) and the second combination of fillers C 2 (100% -20x 10 -6 m) and C 3 (100% -12 x10 -6 m). In reference to the filler grain size chosen, two series of the Lost Foam refractory coatings were designed as follows: coating with filler C 2 (marked: A) and coating with combination of fillers C 2 + C 3 (marked: B), which were corrected according to test results for the coating suspensions obtained.…”

Section: Synthesis Of Lost Foam Refractory Coatings With Activated Fimentioning

confidence: 99%

“…Design of cordierite-based refractory coatings and choice of production method were carried out in accordance with the analysis of the influence of mechanical activation of non-metallic mineral raw materials on the filler's quality, i.e. on the grain size and shape of the filler, according to the works [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

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Influence of mechanical activation of a cordierite -based filler on sedimentation stability of lost foam refractory coatings

Pavlović¹,

Andrić

Radulović

et al. 2019

Sci Sintering

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For the development of the Lost Foam refractory coatings with controlled rheologic properties, the influence of the mechanical activation process on the cordierite-based filler's properties change was examined. First of all, the test referred to the change of filler particles' size and shape, as well as to dispersion ability and stability of the coating suspension. Cordierite was obtained by synthesis in a solid state, out of the mass consisting of kaoline, alumina, quartz, sepiolite. For characterization purposes, the following methods were used: X-ray diffraction, differential thermal analysis, SEM and optical microscopy. Mechanical activation of filler was performed in a vibrating mill. The upper boundary of the grain size was 100%-30 x 10-6 m, the times were (min): 15; 30; 60. The new composition of Lost foam refractory coatings has been developed with a change of the coating production process, as well. These newly synthesized coatings proved to be effective in terms of a positive influence on a surface quality, structural and mechanical properties of aluminium castings. Test results may be useful to have the Lost Foam refractory coatings specified together with other process parameters used for the production of castings according to this casting method.

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