High temperature corrosion resistance of various aluminosilicate refractory bricks

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Ceramics International Pub Date : 2024-09-25 DOI:10.1016/j.ceramint.2024.09.254

Shirin Khanmohammadi, Masoomeh Mohtadinia

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Abstract

Alumina-silica based refractories have found vast applications in various industries due to their strong resistance to corrosion and price advantages. In this research work high temperature corrosion resistance of aluminosilicate refractories against silicate melt was investigated. Various refractory brick matrices based on bauxite, chamotte and andalusite were prepared. The microstructure and chemical characteristics before and after corrosion cup test, as well as physical and mechanical properties were evaluated. The results indicated that corrosion resistance is increased in the following order of chamotte < bauxite < andalusite. Chemical composition and porosity were considered as determinant factors influencing corrosion process and mechanical properties of the refractory bricks. Low porosity of the andalusite aggregates raised the corrosion resistance by making limitations for melt infiltration into refractory material. Low mullitization of andalusite reduced the density and mechanical strength in comparison with other aluminosilicates.

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各种硅酸铝耐火砖的耐高温腐蚀性能

氧化铝-二氧化硅基耐火材料具有很强的耐腐蚀性和价格优势，在各行各业都有广泛的应用。这项研究调查了硅酸铝耐火材料对硅酸盐熔体的耐高温腐蚀性能。研究人员制备了基于铝矾土、白云石和安达卢斯石的各种耐火砖基材。评估了腐蚀杯试验前后的微观结构和化学特征，以及物理和机械性能。结果表明，耐腐蚀性按照以下顺序依次增加：白云石；铝矾土；黄土。化学成分和孔隙率被认为是影响耐火砖腐蚀过程和机械性能的决定性因素。安达鲁石骨料的低孔隙率限制了熔体渗入耐火材料，从而提高了耐腐蚀性。与其他铝硅酸盐相比，低莫来石化会降低密度和机械强度。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.