Nergis KILINÇ MİRDALI, Mustafa DADAY, Mine TAYKURT DADAY

Kil İçeriği Yüksek Aslantaş Baraj Gölü Çökelti Malzemesinin Seramik Üretiminde Kullanılabilirliğinin Araştırılması

Aslantaş Baraj Gölü, Karatepe-Aslantaş Milli Parkı ve Açık Hava Müzesi’ne komşu olan kıyılara sahip bir baraj gölüdür. Bu bölgenin tarihi değeri düşünüldüğünde, çökelen hammaddenin tanınması ve seramiklerde kullanımının araştırılması önem arz etmektedir. Çökelti malzemesinin tane boyutu ve dağılımı, lazer parçacık boyutu ve dağılımı ölçme cihazı ile ölçülmüştür. Hammaddenin kimyasal ve mineralojik analizi X-ışını floresans (XRF) ve X-ışını kırınımı (XRD) metodu ile yapılmıştır. Numunenin ısıl davranışı termogravimetrik/diferansiyel taramalı analiz cihazı (TGA/DTA) ve optik dilatometre (ODHTM) ile tespit edilmiştir. Bünye numuneleri yarı-yaş yöntemle (plastik şekillendirme) hazırlanmış, astarlar renklendirilerek farklı kompozisyonlardaki seramik çamurlarından üretilen bünyeler üzerine uygulanmıştır. Numuneler 800, 900, 1000, 1100 ve 1200 ºC’de fırınlanmış ve tüm bünyelerin boyutsal küçülme değerleri ölçülmüştür. Pişirimin ardından renk değerleri CIE-L*a*b* yöntemiyle tespit edilmiştir. Alınan sonuçların ışığında, hammaddenin, seramik astar ve bünye olarak kullanılabileceği fakat içerisindeki kalsiyum karbonat miktarının yüksekliği nedeniyle ince bir katman olarak uygulanan astarlarda daha iyi sonuçlar elde edileceği saptanmıştır.

Anahtar Kelimeler:

Karatepe, Seramik bünye, Astar, Karakterizasyon, Renk

Investigation of Usage Possibility of High Sedimentary Clay Content in Raw Material from Aslantas Dam Lake for Ceramic Production

Aslantaş Dam Lake is a dam with a shore adjacent to Karatepe-Aslantaş Open-Air and Closed Museum. Considering the historical value of this region, it is important to identify the raw material that has been precipitated and to investigate its use in ceramics. Particle size and distribution was defined with laser particle sizer of sedimentary clay material. The chemical and mineralogical composition of raw material was determined by X-ray fluorescence (XRF) and X-ray diffraction (XRD) methods. Thermal behaviour of sample was studied by Thermogravimetric/Differential Scanning Analyzer (TGA-DTA) and Optical Dilatometer (ODHTM). The body samples were prepared by semi-dry (plastic shaping), the engobes were colored and applied on bodies made of ceramic muds in different compositions. The samples were fired at 800, 900, 1000, 1100 and 1200 °C and shrinkage values were measured for each bodies. The color properties obtained after firing was defined as CIE-L*a*b* parameters. In the light of these results, it was determined that the raw material could be used as a ceramic body and an engobe, but because of the high amount of calcium carbonate, it was found that the engobe applied as a thin layer would have better results.

Keywords:

Karatepe, Ceramic body, Engobe, Characterization, Color,

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