Assessment of fracture behavior of mono-carbonate (C4AcH11) bonded alumina-spinel castables by wedge splitting test

被引：7

作者：

Liu, Wenjing ^{[1
]}

Liao, Ning ^{[1
,2
]}

Nath, Mithun ^{[1
,2
]}

Li, Yawei ^{[1
,2
]}

Dai, Yajie ^{[1
,2
]}

Pan, Liping ^{[1
,2
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

[2] Natl Prov Joint Engn Res Ctr High Temp Mat & Linin, Wuhan, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2024年 / 44卷 / 04期

关键词：

Alumina-spinel castables; Mono-carbonate; Pore structure; High-temperature wedge splitting test; Fracture behavior; REFRACTORY CASTABLES; MICROSTRUCTURAL CHANGES; ELASTIC PROPERTIES; CEMENT; TEMPERATURE; CONVERSION; STRENGTH; RESISTANCE; HYDRATION; EVOLUTION;

D O I：

10.1016/j.jeurceramsoc.2023.11.011

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, nano CaCO3 was added to CAC to prepare mono-carbonate hydrate (C4AcH11). The mechanical properties, pore structure, and fracture behavior at high temperatures of mono-carbonate bonded alumina-spinel castables were assessed. The results showed that the plate-like mono-carbonate promotes early setting behaviors and higher demolding strength. The sintering effects of nano CaCO3 compensate for the strength decay at intermediate temperatures. Moreover, well-distributed CaO sources are essential to forming smaller and elongated CA(6) interlocking laminar structures and contribute to the refinement of pore structures (<10 <mu>m) after firing at 1600 degrees C. The fracture behavior of CAC-bonded alumina-spinel castables evaluated at 1400 degrees C shows that the deformation of fine grains/matrices and pores leads to typical nonbrittle fracture.

引用

页码：2600 / 2608

页数：9

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