Composition of Various Percentages of Terracotta Clay as Colourant Glaze

Siti Norhashimah Suman; Rusmadiah Anwar; Nor Nazida Awang; Salwa Ayob

doi:10.21834/e-bpj.v8iSI16.5228

Authors

Siti Norhashimah Suman College of Creative Arts, Universiti Teknologi MARA, 32610 Seri Isandar Campus Perak, Malaysia
Rusmadiah Anwar Nation Design Centre of Creative Arts, OrganisationUniversiti Teknologi MARA, 40450 Shah Alam Selangor, Malaysia
Nor Nazida Awang GreenSafe Cities (GreSAFE), OrganisationFaculty of Architecture, Planning, & Surveying, Universiti Teknologi MARA, 32610 Seri Iskandar Campus, Perak, Malaysia
Salwa Ayob College of Creative Arts, Universiti Teknologi MARA, 32610 Seri Isandar Campus Perak, Malaysia

DOI:

https://doi.org/10.21834/e-bpj.v8iSI16.5228

Keywords:

Terracotta, Colourant, Glaze, Percentage

Abstract

Terracotta is valuable for its mineral content, which produces pigments for coloring ceramic bodies and glazes. Unlike commercial colors, terracotta's natural minerals make it unique. This study explores the potential use of local terracotta clay in transparent glaze formulations. Methods like clay powder percentages, X-ray diffraction, X-ray fluorescence tests, electron scanning, and microscope analysis (SEM) are used to examine the clay elements' morphology and structure. The addition of terracotta clay powder in proportions (20-50%) rendered the glaze translucent. Samples were applied on porcelain and fired at gloss temperatures (1200°C). The result colors were glossy, smooth, and creamy, with no defects. Keywords: Terracotta, colorant, glaze, percentage

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