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تاثير استخدام الاكاسيد رباعية التكافؤ في تعتيم انواع الزجاج == Opacifing Effect of Using Tetravalent Oxides On A Few Ceramic Glazes
Author name:
قاسم نايف جواد العامري
Supervisor name:
احمد هاشم عبد الكريم الهنداوي
General topic:
Fine Arts
Specific topic:
Porcelain
Degree:
Master
University:
University of Baghdad - College Of Fine Arts - Fine Arts Department
Language:
Arabic
University location:
Baghdad
First pages:
18T1197 - p.pdf
Abstract:
يتناول هذا البحث وضع قاعدة بيانات ومواصفات للزجاج المعتم وباستخدام ثلاثة انواع من الزجاج ( Lead , Borax , Alkaline ) وبدرجة نضج حراري واحدة هي (960 م)، وتم تحديد نوعين من خلطات الاجسام الفخارية (طين كاؤولين دويخلة الابيض، وطين خان بني سعد). وتم استخد | This research deals with the database and specification of opaque glaze by using three types of glaze (Lead, Borax, Alkaline) and the degree of thermal maturity of one (960c), have been identified two types of mixtures of clay bodies (white clay Kaolin Doeakhla and Khan Bani Saad clay).The use of three types of parity opicity Quartet (ZrO2, TiO2, SnO2) was added in different proportions, starting from 4% and up before damage or distort the glaze.The results have been evaluated and the selection of a sample search through all the models to the system,, the beginning point of opacity and the highest point of opacity before glaze cooled down and stiffened.Was conducted several tests on samples of the glass sample analysis, the most important color and intensity of emulsion and the glaze factory and break it and assess the degree of transparency and shiny and hardness, scratch test, resistance to abrasion and chemical materials.Tests showed that the opaque material used in this research have an impact in giving the mixed color glaze, The whiteness color or close to white and the cubic equivalent opaque (ZrO2, TiO2, SnO2) its ability to opaque the ceramic body make deferent obesities such as shiny opacity, semi opacity, matt smooth, hard matt., and that the causes of darkness resulting from the zircon and tin oxide (ZrO2, SnO2) in the temperature (960 c) remain stuck in the glass of liquid (not melted) and the interaction between them and the vehicle increases as the glaze and add more value attributed to the saturation point of darkness, while the oxide titanium (TiO2) have melted and interacted with the glass of vehicles contributed to a new crystal glaze in the opacity.The microscopic imaging of the samples that there is a direct correlation between the amount of bubbles in the glass and the opaque and the size and opaque, as it turned out that there was a relationship between surface roughness and matt ness waviness and reflected light and its scattering.The laboratory tests conducted were as follows : - - test the hardness Tin gave the highest resistance to the glass harder, while the hardness of the titanium oxides and zircon. - test of scratches The tin and titanium was equal or less to resist scratches, it either zirconium scored higher than the resistance of transparent glaze. - test of acid Tests showed that the glass had not been affected by chemical and acid due to an increase in the proportion of acid in mixtures of glaze and opaque
