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اثر تحول البنية البلورية لاوكسيد الحديد في زجاج عالي الحرارة == The Effect Of Crystal Structure Transformation Of Iron Oxide In A High - Temperature Glaze
Author name:
علي صلاح فلاح السلطاني
Supervisor name:
تراث امين عباس
General topic:
Fine Arts
Specific topic:
Plastic Arts
Degree:
Doctorate
University:
University of Babylon - College Of Fine Arts - Fine Arts Department
Language:
Arabic
University location:
Babylon
First pages:
18T1262 - p.pdf
Abstract:
يعنى هذا البحث بدراسة اثر تحول البنية البلورية لاوكسيد الحديد في زجاج عالي الحرارة , والذي يقع في اربعة فصول , حيث تضمن الفصل الاول عرضا لمشكلة البحث والمحددة بالتساؤل الاتي : ما هي تحولات الاطوار البلورية لاوكسيد الحديد في زجاج عالي الحرارة , والتقنيات ا | This research means to study (The effect of crystal structure transformation of iron oxide in a high - temperature glaze) , it consists of four chapters, the first chapter presentation of the problem and the specific questioning follows, what are the changes the crystalline phases of iron oxide in a high - temperature glaze , and techniques resulting from them? While the research objectives legally set as follows : Define the shift in the crystalline phases of iron oxide in a high - temperature glaze.Define the techniques resulting from these transformations of iron oxide in a high - temperature glaze.The second chapter mean theoretical frame and previous studies, is divided on several axes, where mean first axis study crystalline structure, while the second axis mean studying the crystalline structure of the ceramics, and the third axis mean studying iron oxide red (Fe2O3) properties and crystal structure, and the last axis mean has studied stoneware (stoneware).The third chapter dealt procedures for the search, which was conducted the work of five firing and cooling programs and these programs are, oxidized firing program (OG) reduction firing program (RG) slow cooling oxidized program (SG) the Program of firing crystalline (CG) and the program of firing multilayer glaze oxidized (LG), and in the light of these programs and the results of exploratory experiments were selected a number of mixes glaze according to each burn and cooling program, has been added red iron oxide (Fe2O3) to these mixtures different proportions.The formula unit is to calculate (Formula Unites) using an electronic formula calculation program (Glaze Master) which illustrates the totals for the three oxides values (RO2 - R2O3 - RO, R2O) set the temperature from which the inference coordinates system (Matrix).The researcher also conducted several laboratory tests the chemical Analysis , physical examinations of samples of pottery and clay (Linear Shrinkage, Apparent Porosity) and checking mineral analysis (X.R.D) for mixtures of glaze as well as examine chromatography analysis according to the system (LAB) through the use of a chromatography analysis (Precise Color Reader).The fourth chapter mean displays the results and discuss them the most important conclusions are : 1. Transformations taking place in the crystalline phases of red iron oxide (Fe2O3), resulting from the heat and cooling agents.2. Different atmosphere fire given changes in the crystalline structure of the oxide red iron (Fe2O3) by firing oxidized and reduction programs.3. It gave atmosphere reduction fired best shift of the crystalline structure of the iron oxide red, as the transformation from hexagonal crystal system with a crystallized form of a Rhombohedral system to the crystal cube.4. Proved that the oxidized firning program and slow cooling oxidized and fire the crystal's ability to keep the crystal structure of the iron oxide red in the crystal system is hexagonal shaped crystal Rhombohedra.5. Get the display technical amorphous (Crystalline Glazes) of red iron oxide, using feldspar Potash or soda, without resorting to the use of (Frit).
