The ability of Omani local pottery earthenware to accept low- and medium-temperature fired glazes can face technical difficulties. The impurities included in the clays extracted from local fields, especially iron oxid...The ability of Omani local pottery earthenware to accept low- and medium-temperature fired glazes can face technical difficulties. The impurities included in the clays extracted from local fields, especially iron oxide, are a noted weakness that affects painting the local pottery with shiny, opaque, or matte glazes. Previously published research conducted by the researcher on Omani earthenware clays focused on finding a special transparent, shiny, and stable glazing recipe, but few studies have provided matte and opaque glazing recipes that are technically suitable for local Omani clays. By using laboratory-based experimental methodology, this research will investigate the possibility of using White Zircon Borax Frit (WZBF) to develop matte and opaque stable glazes that are suitable with local Omani pottery clay bodies. In the end of this experimental research, the purpose of this project is to develop applicable glazing recipes to be used for painting pots made by Omani clays.展开更多
With the aim of ameliorating its preservation capacity, silver nanoparticles (0 - 100nm) with 99.9% purity and 35nm average particle size, were used as building material for earthenware jar, an extremely old container...With the aim of ameliorating its preservation capacity, silver nanoparticles (0 - 100nm) with 99.9% purity and 35nm average particle size, were used as building material for earthenware jar, an extremely old container which is still used in rural African villages specifically in North Cameroon. Earth material was dissolved in water at the weight ratio of 5% to 10%. Silver nanoparticles were then added to the mixture and stirred to prepare 1% to 5% Ag/Earth paste (1 to 5 ppm). A grounded metal rotating drum was used to prepare earth embedded nanosilver plates. An n-order mathematic expression was used to evaluate the shelf-live quality and deterioration rate of sorghum porridge preserved in this African earthenware container imbedded with nanosilver particles. Accelerated shelf-life testing was used to predict the shelf life of the product at usual rural storage conditions. The used Arrhenius model indicated that the shelf life of the sorghum porridge stored in African earthenware container imbedded with nanosilver particles can be extended to 14 days at 4°C ± 1°C, 6 days at 15°C ± 5°C, and 4 days at 30°C ± 2°C. The calculated Q10 values were found to be in the range of 1.5 - 2.0.展开更多
The role of using frits in developing glazes for ceramics has increasingly received attention across a number of industrial ceramics fields in recent years. Over the past decade, the link between using frits for devel...The role of using frits in developing glazes for ceramics has increasingly received attention across a number of industrial ceramics fields in recent years. Over the past decade, the link between using frits for developing ceramics glazes and the reduction of financial costs has been at the center of much attention. Determining the impact of using frits in the local ceramics industry in Oman is important for the future study of this creative field. Using imported ready-made glazes, despite their long commercial success, is associated with a number of problems, including a shortage of suppliers, high costs, and logistical difficulties. Consequently, there is an urgent need to address the importance of developing glazes locally to help establish some workable solutions for the aforementioned problems. To date, no research studies have investigated using local Omani earthenware clays to make glazes by combining them with commercial frits using empirical laboratory methodologies. By developing low temperature chemical glaze recipes, the main aim of this study is to explore the possibilities of using Omani earthenware clays (OECs) and frits to create glazes that are suitable for local Omani ceramic works.展开更多
文摘The ability of Omani local pottery earthenware to accept low- and medium-temperature fired glazes can face technical difficulties. The impurities included in the clays extracted from local fields, especially iron oxide, are a noted weakness that affects painting the local pottery with shiny, opaque, or matte glazes. Previously published research conducted by the researcher on Omani earthenware clays focused on finding a special transparent, shiny, and stable glazing recipe, but few studies have provided matte and opaque glazing recipes that are technically suitable for local Omani clays. By using laboratory-based experimental methodology, this research will investigate the possibility of using White Zircon Borax Frit (WZBF) to develop matte and opaque stable glazes that are suitable with local Omani pottery clay bodies. In the end of this experimental research, the purpose of this project is to develop applicable glazing recipes to be used for painting pots made by Omani clays.
文摘With the aim of ameliorating its preservation capacity, silver nanoparticles (0 - 100nm) with 99.9% purity and 35nm average particle size, were used as building material for earthenware jar, an extremely old container which is still used in rural African villages specifically in North Cameroon. Earth material was dissolved in water at the weight ratio of 5% to 10%. Silver nanoparticles were then added to the mixture and stirred to prepare 1% to 5% Ag/Earth paste (1 to 5 ppm). A grounded metal rotating drum was used to prepare earth embedded nanosilver plates. An n-order mathematic expression was used to evaluate the shelf-live quality and deterioration rate of sorghum porridge preserved in this African earthenware container imbedded with nanosilver particles. Accelerated shelf-life testing was used to predict the shelf life of the product at usual rural storage conditions. The used Arrhenius model indicated that the shelf life of the sorghum porridge stored in African earthenware container imbedded with nanosilver particles can be extended to 14 days at 4°C ± 1°C, 6 days at 15°C ± 5°C, and 4 days at 30°C ± 2°C. The calculated Q10 values were found to be in the range of 1.5 - 2.0.
文摘The role of using frits in developing glazes for ceramics has increasingly received attention across a number of industrial ceramics fields in recent years. Over the past decade, the link between using frits for developing ceramics glazes and the reduction of financial costs has been at the center of much attention. Determining the impact of using frits in the local ceramics industry in Oman is important for the future study of this creative field. Using imported ready-made glazes, despite their long commercial success, is associated with a number of problems, including a shortage of suppliers, high costs, and logistical difficulties. Consequently, there is an urgent need to address the importance of developing glazes locally to help establish some workable solutions for the aforementioned problems. To date, no research studies have investigated using local Omani earthenware clays to make glazes by combining them with commercial frits using empirical laboratory methodologies. By developing low temperature chemical glaze recipes, the main aim of this study is to explore the possibilities of using Omani earthenware clays (OECs) and frits to create glazes that are suitable for local Omani ceramic works.
