Synthesis and Characterization of New Refractory Coatings Based on Talc, Cordierite, Zircon and Mullite Fillers for Lost Foam Casting Process

Archives of Metallurgy and Materials

A. Prstić¹  A. Terzić²  L. Pavlović³  Z. Aćimović-Pavlović⁴ 

[1] AMI-BEOGRAD, BEOGRAD, SERBIA;INSTITUTE FOR MATERIALS TESTING, BELGRADE, SERBIA;INSTITUTE FOR TECHNOLOGY OF NUCLEAR AND OTHER RAW MINERAL MATERIALS, BELGRADE, SERBIA;UNIVERSITY OF BELGRADE, FACULTY OF TECHNOLOGY AND METALLURGY BELGRADE, SERBIA

关键词: Keywords: high-temperature materials;    refractory coatings;    talc;    cordierite;    zircon;    mullite;    Lost Foam casting;   

DOI  :  10.2478/amm-2014-0015

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Refractory coatings based on different refractory fillers (talc, cordierite, zircon and mullite) for application in Lost Foam casting process were investigated. Design and optimization of the coatings composition with controlled, rheological properties included, and consequently synthesis were achieved by application of different coating components, namely different suspension agents and fillers and by alteration of the coating production procedure. Morphologic and microstructural analysis of fillers was carried out by means of scanning electronic microscope. X-ray diffraction analysis by means of X-ray diffractometer was applied in determination and monitoring the phase composition changes of the refractory fillers. An analysis of the particle size and shape was carried out by means of the PC software application package OZARIA 2.5. To assess the effects of application of individual refractory coatings, a detailed investigation of structural and mechanical properties of the moldings obtained was performed. Highlight was placed on revealing and analyzing surface and volume defects present on moldings. Radiographic molding tests were carried out by means of the X-ray device SAIFORT type-S200. Attained results are essential for the synthesis of refractory coatings based on high-temperature fillers and their applications in Lost Foam casting process for manufacturing of moldings with in-advance-set properties.

【 授权许可】

Unknown