N. A. Gani, M. S. Shamsuddin, W. K. Koo, M. N. Masri, Muhammad Azwadi Sulaiman
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引用次数: 7
摘要
马来西亚的陶器以其使用功能和独特的性质而闻名。粘土作为陶器的原料,是影响某些陶器产品质量和可靠性的主要因素。对粘土的元素和物相的观察对制作优质陶器有很大的帮助。因此,本文从元素和相结构两个方面对粘土的化学组成进行了讨论。基本上,粘土中发现的最多的元素是Si, Al, Fe, Ti, K和Ca。根据位置的不同,马来西亚这些粘土元素的浓度范围为Si 24.8 - 32.4, Al 10.8 - 19.0, Fe 0.09 - 2.12, Ti 0.08 - 1.13和K 0.45 - 3.39。几项研究报道,它们以氧化物化合物的形式存在,它们是SiO2, Al2O3, Fe2O3, TiO2, MgO, CaO, Na2O, K2O和P2O5。粘土中元素的含量不仅决定了粘土的特性,而且影响着最终产品的物理、机械和化学性质。硅石等主要元素的增加提高了熔点,降低了流动性,提高了硬度和抗拉强度。同时,增加氧化铝含量,使坯体能够承受烧结温度,也提高了陶瓷的硬度。
Chemical Composition of Clays for Pottery in Malaysia: A Review
Pottery in Malaysia is been known for its utilized functions and unique properties. Clays as the pottery’s raw materials are a major factor that affecting the quality and reliability of some pottery products. Observations on clays’ elements and phases are very helpful for productions of the good pottery. Hence, in this review, chemical compositions of clays in terms of elements and phases structures are discussed. Basically, the most elements found in clays are Si, Al, Fe, Ti, K and Ca. Depends on location, the concentrations for those clays elements in Malaysia are at range of 24.8 – 32.4 for Si, 10.8 – 19.0 for Al, 0.09 – 2.12 for Fe, 0.08 – 1.13 for Ti and 0.45 – 3.39 for K. Several studies reported, they exist in form of oxide compound which are SiO2, Al2O3, Fe2O3, TiO2, MgO, CaO, Na2O, K2O and P2O5. The percentages of elements in clays do not only determine the clays characteristics, but also influence the physical, mechanical and chemical properties of the end product. Increase of major element like silica arises the melting point, lowers the fluidity, and enhances the hardness and tensile strength. Meanwhile, increase alumina content enables the green body to withstand the sintering temperature and also increase the hardness of the pottery.