Influence of ZrO<sub>2</sub> on the phase composition and mechano-physical properties of MgO-ZrO<sub>2</sub> refractories prepared by cold isostatic pressing

doi:10.1016/j.ceramint.2024.05.345

IMR OpenIR

	Influence of ZrO₂ on the phase composition and mechano-physical properties of MgO-ZrO₂ refractories prepared by cold isostatic pressing
	Song, Qingzhong 1,2; Zha, Xiangdong 1,3; Gao, Ming 1,3; Shi, Junjie 4; Ma, Yingche 1,3
通讯作者	Zha, Xiangdong(xdzha@imr.ac.cn) ; Ma, Yingche(ycma@imr.ac.cn)
	2024-09-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	50 期号:17 页码:30474-30482
摘要	MgO-ZrO2 refractories were produced by combining MgO refractories (with a CaO/SiO2 ratio of 2.1) with monoclinic ZrO2 powder using wet-bag cold isostatic pressing. The phase composition and mechano-physical properties of the MgO-ZrO2 materials were influenced by the interaction between ZrO2 and MgO refractories. ZrO2 enhanced the cold modulus of fracture of MgO refractories but decreased the hot modulus of fracture due to changes in bonding phases. The addition of 1 wt% ZrO2 transformed Ca2SiO4 into CaMgSiO4 and CaZrO3. CaMgSiO4 with a low melting point deteriorated the hot modulus of fracture of MgO-ZrO2 refractories from 13.3 to 2.97 MPa. With an increase in ZrO2 to 3-5 wt.%, CaMgSiO4 remained while CaZrO3 gradually transformed into the solid-solution Ca0.2Zr0.8O1.8. This transformation occurred because ZrO2 seized CaO from CaZrO3 to stabilize itself. Based on thermodynamic equilibrium ZrO2 preferentially reacts with CaO-containing phases in the MgO matrix in the following order: Ca3SiO5 > Ca2SiO4 > CaZrO3 > CaMgSiO4. The thermal shock resistance of MgO-ZrO2 refractories with less than 5 wt% ZrO2 was not significantly improved by assessing their strength loss and coefficient of thermal expansion. In conclusion, it is recommended to incorporate ZrO2 into MgO refractories with low SiO2 or CaO to develop high-performance MgO-ZrO2 refractories.
关键词	Cold isostatic pressing Hot modulus of fracture MgO-ZrO2 refractories Periclase refractories Thermal shock resistance ZrO2
DOI	10.1016/j.ceramint.2024.05.345
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:001262904000001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188162
专题	中国科学院金属研究所
通讯作者	Zha, Xiangdong; Ma, Yingche
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.CAS Key Lab Nucl Mat & Safety Assessment, IMR NMSA, Shenyang 110016, Peoples R China 4.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Song, Qingzhong,Zha, Xiangdong,Gao, Ming,et al. Influence of ZrO₂ on the phase composition and mechano-physical properties of MgO-ZrO₂ refractories prepared by cold isostatic pressing[J]. CERAMICS INTERNATIONAL,2024,50(17):30474-30482.
APA	Song, Qingzhong,Zha, Xiangdong,Gao, Ming,Shi, Junjie,&Ma, Yingche.(2024).Influence of ZrO₂ on the phase composition and mechano-physical properties of MgO-ZrO₂ refractories prepared by cold isostatic pressing.CERAMICS INTERNATIONAL,50(17),30474-30482.
MLA	Song, Qingzhong,et al."Influence of ZrO₂ on the phase composition and mechano-physical properties of MgO-ZrO₂ refractories prepared by cold isostatic pressing".CERAMICS INTERNATIONAL 50.17(2024):30474-30482.