Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys

Samples of Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> are obtained through a solid-state reaction of Al<sub>2</sub>O<sub>3</sub>, SrSO<sub>4</sub>, and SrCO<sub>3</sub>. The samples are then...

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Main Authors: José Amparo Rodríguez-García, Carlos Adrián Calles-Arriaga, Ricardo Daniel López-García, José Adalberto  Castillo-Robles, Enrique  Rocha-Rangel
Format: Article
Language:English
Published: MDPI AG 2024-03-01
Series:Eng
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Online Access:https://www.mdpi.com/2673-4117/5/1/25
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author José Amparo Rodríguez-García
Carlos Adrián Calles-Arriaga
Ricardo Daniel López-García
José Adalberto  Castillo-Robles
Enrique  Rocha-Rangel
author_facet José Amparo Rodríguez-García
Carlos Adrián Calles-Arriaga
Ricardo Daniel López-García
José Adalberto  Castillo-Robles
Enrique  Rocha-Rangel
author_sort José Amparo Rodríguez-García
collection DOAJ
description Samples of Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> are obtained through a solid-state reaction of Al<sub>2</sub>O<sub>3</sub>, SrSO<sub>4</sub>, and SrCO<sub>3</sub>. The samples are then made into 1 and 4 cm pellets by compacting them at 100MPa and sintering them at 1400 °C for 4 h. The compound is analyzed using X-ray diffraction. Static immersion and wettability tests are carried out to evaluate corrosion resistance in contact with Al–Si. Corrosion tests are conducted by immersing the samples at 800, 900, and 1000 °C for 24, 50, and 100 h, while wettability is studied at 900, 1000, and 1100 °C for 2 h. Afterwards, the samples are subject to metallographic preparation. The samples are then analyzed using optical microscopy, scanning electron microscopy, and image analysis. In general, reaction products consisting of alumina, spinel, oxides, and sulfates are found. The contact angles obtained are between 124° and 135°. It is concluded that the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> ceramic substrate is resistant to corrosion by the Al–Si alloy because of the slight thickness of the reaction products found in the samples (73 μm), considering the severe conditions of the experiment: 1000 °C and 100 h of isothermal temperature. Furthermore, Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> is not wettable by Al–Si alloys. These results suggest that the ceramic substrate could be used in the refractory industry, possibly as an additive to commercial refractory ceramics. For future work, it is recommended to carry out the same study with the aluminum–magnesium alloy and as an additive in commercial refractory ceramics.
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spelling doaj.art-9ffec7f83c1045079b837f8be6aea8722024-03-27T13:36:00ZengMDPI AGEng2673-41172024-03-015146147610.3390/eng5010025Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si AlloysJosé Amparo Rodríguez-García0Carlos Adrián Calles-Arriaga1Ricardo Daniel López-García2José Adalberto  Castillo-Robles3Enrique  Rocha-Rangel4Research Department, Universidad Politécnica de Victoria, Av. Nuevas Tecnologías 5902, Parque Científico y Tecnológico de Tamaulipas, Cd. Victoria 87138, Tamaulipas, MexicoResearch Department, Universidad Politécnica de Victoria, Av. Nuevas Tecnologías 5902, Parque Científico y Tecnológico de Tamaulipas, Cd. Victoria 87138, Tamaulipas, MexicoMechanical Department, Tecnológico Nacional de México, Instituto Tecnológico de Cd. Victoria, Blvd. Emilio Poster Gil 1301, Cd. Victoria 87010, Tamaulipas, MexicoResearch Department, Universidad Politécnica de Victoria, Av. Nuevas Tecnologías 5902, Parque Científico y Tecnológico de Tamaulipas, Cd. Victoria 87138, Tamaulipas, MexicoResearch Department, Universidad Politécnica de Victoria, Av. Nuevas Tecnologías 5902, Parque Científico y Tecnológico de Tamaulipas, Cd. Victoria 87138, Tamaulipas, MexicoSamples of Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> are obtained through a solid-state reaction of Al<sub>2</sub>O<sub>3</sub>, SrSO<sub>4</sub>, and SrCO<sub>3</sub>. The samples are then made into 1 and 4 cm pellets by compacting them at 100MPa and sintering them at 1400 °C for 4 h. The compound is analyzed using X-ray diffraction. Static immersion and wettability tests are carried out to evaluate corrosion resistance in contact with Al–Si. Corrosion tests are conducted by immersing the samples at 800, 900, and 1000 °C for 24, 50, and 100 h, while wettability is studied at 900, 1000, and 1100 °C for 2 h. Afterwards, the samples are subject to metallographic preparation. The samples are then analyzed using optical microscopy, scanning electron microscopy, and image analysis. In general, reaction products consisting of alumina, spinel, oxides, and sulfates are found. The contact angles obtained are between 124° and 135°. It is concluded that the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> ceramic substrate is resistant to corrosion by the Al–Si alloy because of the slight thickness of the reaction products found in the samples (73 μm), considering the severe conditions of the experiment: 1000 °C and 100 h of isothermal temperature. Furthermore, Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> is not wettable by Al–Si alloys. These results suggest that the ceramic substrate could be used in the refractory industry, possibly as an additive to commercial refractory ceramics. For future work, it is recommended to carry out the same study with the aluminum–magnesium alloy and as an additive in commercial refractory ceramics.https://www.mdpi.com/2673-4117/5/1/25solid-state reactionstatic immersionwettabilitycorrosionaluminum alloys
spellingShingle José Amparo Rodríguez-García
Carlos Adrián Calles-Arriaga
Ricardo Daniel López-García
José Adalberto  Castillo-Robles
Enrique  Rocha-Rangel
Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
Eng
solid-state reaction
static immersion
wettability
corrosion
aluminum alloys
title Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
title_full Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
title_fullStr Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
title_full_unstemmed Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
title_short Chemical Interaction between the Sr<sub>4</sub>Al<sub>6</sub>O<sub>12</sub>SO<sub>4</sub> Ceramic Substrate and Al–Si Alloys
title_sort chemical interaction between the sr sub 4 sub al sub 6 sub o sub 12 sub so sub 4 sub ceramic substrate and al si alloys
topic solid-state reaction
static immersion
wettability
corrosion
aluminum alloys
url https://www.mdpi.com/2673-4117/5/1/25
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