Letteratura scientifica selezionata sul tema "Porcelain, Korean (South)"

This paper is a study on Korean Buncheong ware in relation to the ceramic culture of North China. The focus on drawing connections between the ceramic industries of Korea and North China expands on views presented in previous scholarship. Research thus far has traditionally ascribed the origin of Buncheong forms and decoration techniques to the influences of inlaid celadon from the late Goryeo Dynasty and the Cizhou ware of the Yuan and Ming Dynasties. The ceramic culture of North China was quickly transmitted to Korea due to the naturalization of the Jurchen people, who took part in founding the early Joseon Dynasty. Another factor was the migration and settlement of immigrants from North China, which began from the late Goryeo Dynasty and continued into the Joseon Dynasty or the fifteenth century. Therefore, the influence of North China is evident in various aspects of Buncheong ware from the early fifteenth century as observed in the forms of inlaid examples produced during this period. In the latter half of the fifteenth century, increased cultural exchange between the two regions and the growing number of migrants from North China were two important factors in the development of Buncheong in Korea. This is particularly true for examples featuring underglaze iron-brown (cheolhwa), sgraffito (bakji), slip-brushed (gwiyal), and slip-coated (deombeong) decorations fired in kilns populating the region of Chungcheong-do and parts of Jeolla-do. Traces of ‘Bunjang (粉粧)’ ceramics, which served as the transition from celadon to White Porcelain, is detected not only in the fifteenth century Buncheong ware of Joseon, but also in the porcelain of North China produced in the late Yuan and early Ming Dynasties. Though South China also experienced a quick transition from celadon to White Porcelain, the inclusion of ‘Bunjang’ ceramics is unique to North China. In conclusion, early Joseon Buncheong originated and developed from the inlaid celadon of late Goryeo–a progression that occurred under the ceramic culture of North China, whose influences prompted innovations in form and technique vital to the development of Buncheong ware.

The aging of porcelain insulators is responsible for the failure of power utilities. Porcelain insulators from different places in South Korea, possessing various aging times and years of installation, have been investigated to carry out lifetime statistics. These samples have a mass of 36,000 lbs and are operated at 154 kV. X-ray fluorescence (XRF) and scanning electron microscopy (SEM) were performed on the porcelain bodies of the samples collected. XRF and SEM revealed trends in the weight percentage of SiO2, Al2O3, and Fe2O3 in the porcelain bodies of the collected samples. The SiO2 and Fe2O3 weight percentage reduced to 8.93% and 73.17%, respectively, in sample C compared to A. However, the Al2O3 weight percentage increased to 16.23% in sample C compared to sample A. This change in weight percentage of SiO2, Fe2O3, and Al2O3 contributed toward enhancing the mechanical and electrical properties of the insulators. Mechanical load tests with electrical voltage (M&E), thermal and mechanical load tests (T&M), and hardness tests (HRB) were performed to evaluate these characteristics. Experiments revealed an increase of 90.9% in the inequality factor (K) in sample C compared to A. The impact of constituents of porcelain on the lifetime expectancy of a porcelain insulator was reported by implementing statistical strategies, such as the Weibull distribution.