Mechanical properties of chemically bonded sand core materials dipped in sol-gel coating impregnated with filter: novel approach to improve casting quality

Ugochukwu Chibuzoh Nwaogu, Niels Skat Tiedje

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A novel sol-gel coating impregnated with filter dust was applied on chemically bonded sand core materials by dipping. After curing, the strengths of the core materials were measured under uniaxial loading using a new strength testing machine (STM). The STM presents the loading history as a force-displacement curve from which the mechanical properties of the materials are deduced. The fracture surfaces were examined using a stereomicroscope and a scanning electron microscope. From the results, the strengths of the core materials were slightly reduced by the coating in tensile and flexural modes, while the strengths were increased under compression. The mode of fracture of the chemically bonded sand core materials was observed to be intergranular through the binder. The stiffness of the chemically bonded sand core materials was determined. For better understanding of the mechanical properties of the chemically bonded sand core materials, a combination of flexural and compression tests is suggested for improving the casting quality. © 2012 W. S. Maney & Son Ltd.

Original languageEnglish
JournalInternational Journal of Cast Metals Research
Volume25
Issue number5
Pages (from-to)307-317
ISSN1364-0461
DOIs
Publication statusPublished - 2012

Cite this

@article{fd10cc027c3744588aa63ed02d97420e,
title = "Mechanical properties of chemically bonded sand core materials dipped in sol-gel coating impregnated with filter: novel approach to improve casting quality",
abstract = "A novel sol-gel coating impregnated with filter dust was applied on chemically bonded sand core materials by dipping. After curing, the strengths of the core materials were measured under uniaxial loading using a new strength testing machine (STM). The STM presents the loading history as a force-displacement curve from which the mechanical properties of the materials are deduced. The fracture surfaces were examined using a stereomicroscope and a scanning electron microscope. From the results, the strengths of the core materials were slightly reduced by the coating in tensile and flexural modes, while the strengths were increased under compression. The mode of fracture of the chemically bonded sand core materials was observed to be intergranular through the binder. The stiffness of the chemically bonded sand core materials was determined. For better understanding of the mechanical properties of the chemically bonded sand core materials, a combination of flexural and compression tests is suggested for improving the casting quality. {\circledC} 2012 W. S. Maney & Son Ltd.",
author = "Nwaogu, {Ugochukwu Chibuzoh} and Tiedje, {Niels Skat}",
year = "2012",
doi = "10.1179/1743133612Y.0000000013",
language = "English",
volume = "25",
pages = "307--317",
journal = "International Journal of Cast Metals Research",
issn = "1364-0461",
publisher = "CRC Press/Balkema",
number = "5",

}

Mechanical properties of chemically bonded sand core materials dipped in sol-gel coating impregnated with filter : novel approach to improve casting quality . / Nwaogu, Ugochukwu Chibuzoh; Tiedje, Niels Skat.

In: International Journal of Cast Metals Research, Vol. 25, No. 5, 2012, p. 307-317.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Mechanical properties of chemically bonded sand core materials dipped in sol-gel coating impregnated with filter

T2 - novel approach to improve casting quality

AU - Nwaogu, Ugochukwu Chibuzoh

AU - Tiedje, Niels Skat

PY - 2012

Y1 - 2012

N2 - A novel sol-gel coating impregnated with filter dust was applied on chemically bonded sand core materials by dipping. After curing, the strengths of the core materials were measured under uniaxial loading using a new strength testing machine (STM). The STM presents the loading history as a force-displacement curve from which the mechanical properties of the materials are deduced. The fracture surfaces were examined using a stereomicroscope and a scanning electron microscope. From the results, the strengths of the core materials were slightly reduced by the coating in tensile and flexural modes, while the strengths were increased under compression. The mode of fracture of the chemically bonded sand core materials was observed to be intergranular through the binder. The stiffness of the chemically bonded sand core materials was determined. For better understanding of the mechanical properties of the chemically bonded sand core materials, a combination of flexural and compression tests is suggested for improving the casting quality. © 2012 W. S. Maney & Son Ltd.

AB - A novel sol-gel coating impregnated with filter dust was applied on chemically bonded sand core materials by dipping. After curing, the strengths of the core materials were measured under uniaxial loading using a new strength testing machine (STM). The STM presents the loading history as a force-displacement curve from which the mechanical properties of the materials are deduced. The fracture surfaces were examined using a stereomicroscope and a scanning electron microscope. From the results, the strengths of the core materials were slightly reduced by the coating in tensile and flexural modes, while the strengths were increased under compression. The mode of fracture of the chemically bonded sand core materials was observed to be intergranular through the binder. The stiffness of the chemically bonded sand core materials was determined. For better understanding of the mechanical properties of the chemically bonded sand core materials, a combination of flexural and compression tests is suggested for improving the casting quality. © 2012 W. S. Maney & Son Ltd.

U2 - 10.1179/1743133612Y.0000000013

DO - 10.1179/1743133612Y.0000000013

M3 - Journal article

VL - 25

SP - 307

EP - 317

JO - International Journal of Cast Metals Research

JF - International Journal of Cast Metals Research

SN - 1364-0461

IS - 5

ER -