• Title/Summary/Keyword: Glaze

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Study of Material Characteristics by a Componential Analysis on the Whiteware from the Kiln of Chiljeon-ri, Bangsan-myeon, Yanggu-gun (양구 방산 칠전리 출토 백자의 성분분석을 통한 원료특성 연구)

  • Ahn, Songyee;Hwang, Hyunsung
    • Journal of Conservation Science
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    • v.29 no.3
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    • pp.261-277
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    • 2013
  • This study aims to research the relationship between whitewares and their rare materials from the site of Yanggu and Bunwon through the componential characteristic of the excavated whitewares from the 1st and the 2nd kilns of Chiljeon-ri in Bangsan-myeon, Yanggu-gun. As a result, the sherds were devided according to the chemical compositions of the body and the glaze via their respective production era. However, it considered that the whitewares from Chiljeon-ri had been manufactured with geochemically similar materials and the production process, such as refining and combining materials, had been different. It assumed that the firing temperatures of the whitewares from Chiljeon-ri were around $1,100-1,200^{\circ}C$ and substantially lower than for general whitewares. In the componential analysis, there were disparate properties in the cobalt pigment, which contained trace elements and rare earth elements. A review of the literature revealed a correlation between the whitewares from the late Chosun kiln site in Bunwon-ri and the raw materials from Yanggu-gun, but this was there were various techniques for refining and combining materials in Bunwon-ri.

Comparative Study on Material Characteristics of Joseon White Wares Excavated from Gangwon Wonju Province (강원 원주지역 조선백자의 재료학적 특성 비교연구)

  • Lee, Byeong Hoon;So, Myoung-Gi
    • Journal of Conservation Science
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    • v.33 no.4
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    • pp.225-239
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    • 2017
  • This study aimed to investigate the chemical properties and production techniques for white wares from the Gwirae-1ri 3rd, Songok-3ri 2nd kiln sites in Kangwon Wonju regions. Further, another aim was to determine the correlation among the materials used to produce the white wares. The analysis of white wares in Kangwon Wonju regions produced the following results. The excavated white wares were analyzed using the Seger formula, and all the samples showed similar clay sources ($RO_2:4.33-5.82$, $RO+R_2O:0.32-0.43$) and glaze sources. Moreover, the white wares were made of host rocks of the same geological origin, according to the results of the rare earth elements analysis. When the crystalline phases of the white wares were investigated via the XRD analysis, quartz and mullite were found in all the samples, and their proportions were similar to each other. Although the firing temperatures for the samples were different, most were fired at a temperature below $1,200^{\circ}C$, with some being fired at temperatures as low as $1,000{\pm}20^{\circ}C$.

A Study of the Personal Ornaments and Make-up of Maroccan (모로코인(人)의 장신구(裝身具)와 화장(化粧)에 관(關)한 연구(硏究))

  • Lee, Soon-Hong
    • Journal of Fashion Business
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    • v.5 no.2
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    • pp.15-34
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    • 2001
  • Ornaments are accessories for the decoration of the body or dress. They aren't unavoidably required one, but serve to make one's dress perfect as decorative industrial art objects. In Morocco, ornaments were initially used as a sign of social position or the class or an incantatory symbol. In effect, they were originally employed to adjust one's dress, not just for decoration, and they were of use for household economy. Gold, silver and handcraft available for exchange were a means of increasing one's property and an indication of social standing and wealth. In particular, the dress and jewelry of a bride was a measure of her family's wealth, regarded as a symbol of her chastity and value. The ornaments symbolically back up people's faith in supernatural power, and their real value is based on implicit form or way of decoration, not the external shape. Specifically, there is a tendency to use the form of animal as a protector, not one to frighten people. In the artistic tradition of Morocco, fish pattern stands for water and rain, and eagle and bird are considered to be related to fate. Scorpion and lizard are depicted as an inquirer of sun, and snake is a symbol of abundance and sexual instinct, being viewed to have an ability to cure disease. Turtle pattern is a symbol of saint because it protects one from the evil. The ornaments are made of gold, silver, amber, clam, garnet, glass, nielle, enamel, glaze, coral or tree, and symbolic patterns are used, including hand(a symbol of five numerals), turtle, lizard, scorpion, eye, triangle, bird and eggs. They are very big and diverse, being categorized into ornaments for the head or the chest, neckless, fibula, earring, bracelet and ring. For Moroccans, make-up is a sort of instinctive behavior to meet aesthetic and sexual desire. They also wear make-up for practical purpose of protection, intentionally inflict a wound on the skin for ceremonial or religious purpose, paint the skin with pigment, or have the part of the body tattooed for incantatory purpose. All this actions are regarded as make-up. The raw material of cosmetics is aker, a vegetable dye. They get the lips or cheeks turn red and paint eyebrows with yellow saffran powder to have a bad devil lose its strength. Tattooing is mainly done by women and viewed as a sign of their value or social organization they belong to. Sometimes that is used to represent a woman's being old enough to marry or getting married already or the frequency of marriage. Besides, tattoo is believed to prevent or remedy loose bowels or cough, depending on its location or pattern, and they often change tattoo according to the change of beauty art.

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Effect of Wear Environments on the High Stress Sliding Wear Behavior of Ni-base Deloro 50 Alloy (Ni계 Deloro 50합금의 고하중 Sliding 마모거동에 미치는 마모환경의 영향)

  • Choi, Jin-Ho;Choi, Se-Jong;Kim, Jun-Gi;Kim, Yong-Deog;Kim, Hak-Soo;Mun, Ju-Hyun;Baek, Ha-Chung;Lee, Duck-Hyun;Kim, Seon-Jin
    • Korean Journal of Materials Research
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    • v.8 no.12
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    • pp.1115-1120
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    • 1998
  • The sliding wear behavior of Ni-base hardfacing alloy, Deloro 50, was investigated at the contact stresses of 15ksi and 30ksi under the various wear environments. In air at room temperature, Deloro 50 showed lower wear resistance than Stellite 6 even at 15ksi due to the occurrence of severe adhesive wear. This seems to be caused by the lower hardness and work- hardening rate of Deloro 50 than those of Stellite 6. In water at room temperature, Deloro 50 showed as good wear resistance as Stellite 6 at 15ksi. It was considered to be due to that water could effectively prevent metal to metal contact through contacting asperities. However, Deloro 50 showed severe adhesive wear at 30ksi in water at room temperature. It seems to be that the water could not suppress adhesion wear at 30ksi. At $300^{\circ}C$ in air, Deloro 50 exhibited higher wear resistance than Stellite 6 even at 30ksi. It was considered that the oxide glaze layers formed on wear surface during sliding, effectively prevented direct metal-to-metal contacts.

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Material Analysis and Coloring Characteristics of Korean Traditional Copper-red Pigment (Jinsa) (동화(진사) 안료의 재료과학적 분석 및 발색특성)

  • Kim, Ji-Young;Cho, Hyun-Kyung;Jun, Byung-Kyu;Cho, Nam-Chul;Lee, Chan-Hee
    • Journal of Conservation Science
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    • v.27 no.1
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    • pp.31-40
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    • 2011
  • Copper-red (Dongwha, Jinsa) is Korean traditional inorganic pigment used for red-coloring on the porcelain surface during Goryeo and Joseon Periods. Trace amounts of copper-red porcelains are handed down because of the technical difficulty of making and coloring of the pigment. It is known that copper ore sources were extensively distributed in Korea according to old literatures and some of them are still producing copper ore at this present. Main types of copper-bearing mineral in Korea are chalcopyrite ($CuFeS_2$) and malachite ($Cu_2CO_3(OH)_2$), and they are easily collected from the ground surface. This means Korea had geographical and economic geological advantages for supplying raw material of the pigment. These two minerals showed good red-coloring in color test for porcelain pigment. As a coloring element, copper showed micro size less than $5{\mu}m$ in diameter in glaze matrix. The dispersion of copper particle is the most decisive factor for red chromaticity of copper-red porcelain, as well as copper content of the pigment.

The Study of Plate Powder Coated Nano Sized ZnO Synthesis and Effect of Sensory Texture Improvement (나노 ZnO 입자가 코팅된 판상 분체의 합성과 사용감 증진 효과에 대한 연구)

  • Jin-Hwa , Lee;Ju-Yeol, Han;Sang-Gil, Lee;Hyeong-Bae, Pyo;Dong-Kyu, Lee
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.30 no.2
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    • pp.173-180
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    • 2004
  • Nano sized ZnO particle as 20-30nm applies for material, pigments, rubber additives, gas sensors, varistors, fluorescent substance as well as new material such as photo-catalyst, sensitizer, fluorescent material. ZnO with a particle size in the range 20-30nm has provided to be an excellent UV blocking material in the cosmetics industry, which can be used in sunscreen product to enhance the sun protection factor and natural makeup effect. But pure ZnO particles application limits for getting worse wearing feeling. We make high-functional inorganic-composite that coated with nano-ZnO on the plate-type particle such as sericite, boron nitride and bismuthoxychloride. In this experiment, we synthesized composite powder using hydrothermal precipitation method. The starting material was ZnCl$_2$ Precipitation materials were used hexamethylenetetramine(HMT) and urea. We make an experiment with changing as synthesis factors that are concentrations of starting material, precipitation materials, nuclear formation material, reaction time, and reaction temperature. We analyzed composite powder's shape, crystallization and UV-blocking ability with FE-SEM, XRD, FT-IR, TGA-DTA, In vitro SPF test. The user test was conducted by product's formulator. In the results of this study, nanometer sized ZnD was coated regardless of the type of plate-powder at fixed condition range. When the coated plate-powders were applied in pressed powder product, the glaze of powder itself decreased, but natural make-up effect, spreadability, and adhesionability were increased.

Thermal and chemical stability evaluation of white ceramic pigment for digital inkjet printing (디지털 잉크젯 프린팅용 흰색 세라믹 안료의 고온 및 화학적 안정성 평가)

  • Kwon, Jong-Woo;Lee, Ji-Hyeon;Lee, Jong-Heun;Hwang, Kwang-Taek;Kim, Jin-Ho;Han, Kyu-Sung
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.26 no.5
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    • pp.201-208
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    • 2016
  • Ceramic pigments, which show good thermal and chemical stabilities, have been applied for various industry with development of digital printing technology. Ceramic inkjet printing has advantages of high efficiency of ink usage and eco-friendly process. Thus, the interest of the ceramic pigments with various function and color including CMYK (cyan, magenta, yellow, black) digital primary color is increasing. Here, we investigated the thermal and chemical stabilities of white ceramic pigment for digital inkjet printing process. The microstructure and crystal structure of MgO, $Al_2O_3$, $MgAl_2O_4$, $CeO_2$ were analyzed, and the stability with glaze were evaluated. In order to evaluate the applicability for digital inkjet printing, the chemical stability of white ceramic pigments at high temperature was investigated by characterization of the mixed color properties with CMYK ceramic pigments after firing process.

The hardening effect by ice-quenching after oxidation of a Pd-Ag-Sn-Au metal-ceramic alloy during porcelain firing simulation (금속-세라믹용 Pd-Ag-Sn-Au계 합금의 모의소성 시 산화처리 후 급랭에 의한 경화 효과)

  • Shin, Hye-Jeong;Kim, Min-Jung;Kwon, Yong-Hoon;Kim, Hyung-Il;Seol, Hyo-Joung
    • Korean Journal of Dental Materials
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    • v.44 no.3
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    • pp.197-206
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    • 2017
  • The hardening effect by ice-quenching after oxidation of a Pd-Ag-Sn-Au metal-ceramic alloy during porcelain firing simulation was investigated by means of hardness test, field emission scanning electron microscopic observations, and X-ray diffraction analysis. The hardness decreased by ice-quenching after oxidation, which was induced by the homogenization of the ice-quenched specimen. The decreased hardness by ice-quenching after oxidation was recovered from the wash stage which was the first stage of the remaining firing process for bonding porcelain. After wash stage, the hardness of the ice-quenched specimens decreased during the subsequent porcelain firing process. But the final hardness of the ice-quenched specimens after oxidation was higher than that of the specimens cooled at stage 0 after oxidation. The increase in hardness of the specimens during the first firing process was caused by the lattice strains generated at the interface between the face-centered cubic Pd-Ag-rich matrix and the face-centered tetragonal Pd3(Sn, Ga, In) precipitate. The decrease in hardness of the specimens during the remaining firing process was caused by the microstructural coarsening.

Effect of limestone addition on mechanical properties of ceramic tiles with fly ash (플라이애시가 첨가된 도자타일 성능에 석회석 함량이 미치는 효과)

  • Lee, Jin-Wook;Han, Kyu-Sung;Hwang, Kwang-Taek;Kim, Jin-Ho
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.28 no.6
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    • pp.256-262
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    • 2018
  • A great amount of fly ash, which is a waste from a thermal power plant, has not been appropriately recycled until now. Landfill of flay ash causes environmental pollution and enormous economic costs. In this study, manufacturing of architectural ceramic tile was investigated replacing fly ash with clay raw material. The properties of porcelain tile was analyzed after manufacturing porcelain tile with mineral based glaze and fast firing process. In particular, the effect of the fly ash addition on the properties of ceramic tile was investigated by increasing the amount of limestone addition. Porcelain tile with fly ash showed excellent bending strength, water absorption, warping and abrasion resistance. However, a significant decrease in durability was observed through the autoclave test. Addition of limestone increased the water absorption, twisting and hydration expansion of the ceramic tile, but it was confirmed that the durability of the ceramic tile with fly ash was greatly improved. In conclusion, recycled architectural ceramic tiles, which can meet domestic construction standards, could be manufactured with the addition of fly ash and limestone.

A Study on the characteristic of the tableware pottery and the Food Culture for Genre Painting in the 18th Chosun Period -Focused on the works of Dan-won Kim Hong-do- (풍속화(風俗畵)에 나타난 18세기(世紀) 조선시대(朝鮮時代) 식기(食器)와 음식문화(飮食文化) 연구 - 단원(檀園) 김홍도(金弘道)의 작품을 중심으로 -)

  • Kim, Mi-Hye;Chung, Hae-Kyung
    • Journal of the Korean Society of Food Culture
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    • v.22 no.6
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    • pp.653-664
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    • 2007
  • This study intends to consider about the food culture during the latterly Chosun Dynasty through the genre paintings which are depicted realistically about the total food life figures for example not only the foods, but also that people who eat and drink the food and eating implements, eating methods. There are 9 pieces of works Kim hong-do's which are the best appraisal on the incorporated Korean emotion and on the real life of general public. Those are selected for this study's characteristics through the literature consideration. The characteristics of the tableware pottery and food culture are following things. The first is a white porcelain's development and popularization. In the latterly Chosun Dynasty period, the development of the agriculture and commerce made been connected to the affluent food cultures, these made increase the porcelain's use of upper classes and these made been connected to the development of the porcelain's cultures. The second is the development of various pottery with a dark brown glaze manufactures. The development of agriculture and economy power made bring the development of the kinds of sauces and Kimchi culture with an inflow of foreign crops and these made making the large an earthenware pot or jar which could store something during the long time. The third is the development of the small dining table on the eating the bread of idleness. In the Chosun dynasty period, the food style was been unified to he eating the bread of idleness and been lowered. These made developed of various small dining table through the underfloor heating system's generalization. The fourth is the development of the spoon with the soup culture. It is the East Asia called that the spoon culture boundary, this show the characteristic that we use the spoon mainly compare with another countries. Finally, it is universal use of the fixed quantitative implements. They could live quantitative life with the scales which are jar of soy sauce, liquor jug, jar, scoop leading a set of tableware.