Effects of MgO and Y2O3 on preparation of silicon nitride ceramics by gas pressure sintering

doi:10.3969/j.issn.1001-1935.2021.04.009

Refractories ›› 2021, Vol. 55 ›› Issue (4): 316-318.DOI: 10.3969/j.issn.1001-1935.2021.04.009

Previous Articles Next Articles

Effects of MgO and Y₂O₃ on preparation of silicon nitride ceramics by gas pressure sintering

Yu Dongling¹⁾(), Zhang Huiling¹^,²⁾, Luo Hongbin¹⁾, Feng Xiaoyu¹⁾, Wu Nanxing¹^,²⁾()

1)School of Mechanical and Electronic Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403,Jiangxi,China

Received:2021-01-08 Online:2021-08-15 Published:2021-08-22
Contact: Wu Nanxing

MgO和Y₂O₃对气压烧结制备氮化硅陶瓷的影响

余冬玲¹⁾(), 张会玲¹^,²⁾, 罗宏斌¹⁾, 冯晓宇¹⁾, 吴南星¹^,²⁾()

1)景德镇陶瓷大学机械电子工程学院江西景德镇 333403
2)江西省陶瓷材料加工技术工程实验室江西景德镇 333403

通讯作者: 吴南星
作者简介:余冬玲:女,1987年生,硕士,副教授。E-mail: zhanghljs@163.com
基金资助:
国家自然科学基金资助项目(51964022)

Abstract

Abstract:

Silicon nitride ceramics were prepared using different amounts of MgO or Y₂O₃ powder as sintering aids (2%,4%,6%,8%,and 10%),ball milling,granulating,shaping and sintering at 1 750 ℃ under 6 MPa nitrogen.The relative density of the specimens was determined,the phase composition and microstructure were explored.The results show that (1)the maximum relative density reached 96.5% or 98% with 6% MgO or 8% Y₂O₃,respectively;(2)with the same addition,the relative density of the sample with Y₂O₃ powder is higher than that with MgO powder,indicating that Y₂O₃ preforms better than MgO in promoting sintering densification;(3)MgO and Y₂O₃ powder both can promote the transition from α-Si₃N₄ to β-Si₃N₄.

Key words: magnesia, yttrium oxide, silicon nitride ceramics, gas pressure sintering, sintering densification, sintering aid

摘要：

分别添加不同量(质量分数分别为2%、4%、6%、8%、10%)的MgO粉或Y₂O₃粉作为烧结助剂,经球磨混合、造粒、成型、6 MPa氮气-1 750 ℃气压烧结制备氮化硅陶瓷,检测试样的相对密度,并分析其物相组成和显微结构。结果表明:1)MgO粉添加量为6%(w)的试样和Y₂O₃粉添加量为8%(w)的试样的相对密度分别达到其系列试样的最大值96.5%和98%。2)添加量相同时,添加Y₂O₃粉试样的相对密度均比添加MgO粉试样的大,表明Y₂O₃比MgO更能促进氮化硅陶瓷的烧结致密化。3)添加MgO粉或Y₂O₃粉均能促进α-Si₃N₄向 β-Si₃N₄ 转变。

关键词: MgO, Y₂O₃, 氮化硅陶瓷, 气压烧结, 烧结致密度, 烧结助剂

CLC Number:

TQ175

Yu Dongling, Zhang Huiling, Luo Hongbin, Feng Xiaoyu, Wu Nanxing. Effects of MgO and Y₂O₃ on preparation of silicon nitride ceramics by gas pressure sintering[J]. Refractories, 2021, 55(4): 316-318.

余冬玲, 张会玲, 罗宏斌, 冯晓宇, 吴南星. MgO和Y₂O₃对气压烧结制备氮化硅陶瓷的影响[J]. 耐火材料, 2021, 55(4): 316-318.

Figures/Tables 4

References 13

[1]	刘萍, 徐恩霞, 谢宏旭, 等. 氮化硅粉体制备方法研究进展[J]. 耐火材料, 2020, 54(5):457-460.
[2]	魏耀光, 郭刚, 李静, 等. 难熔高熵合金在航空发动机上的应用[J]. 航空材料学报, 2019, 39(5):82-93.
[3]	程诚, 纪箴, 贾成厂, 等. MgO和烧结温度对Al₂O₃陶瓷致密化过程的影响[J]. 粉末冶金技术, 2015, 33(4):275-280+284.
[4]	郭昂, 王战民, 赵世贤, 等. 含LiAlO₂-Y₂O₃复合助烧剂的氮化硅陶瓷低温致密化研究[J]. 耐火材料, 2020, 54(5):369-373.
[5]	李天峰, 陈拥军, 李建保, 等. Al₂O₃-RE₂O₃(RE=Lu,Y,Gd,La)烧结助剂对Si₃N₄陶瓷结构和性能的影响[J]. 硅酸盐学报, 2019, 47(6):82-88.
[6]	杨亮亮, 谢志鹏, 李双. MgO-Al₂O₃-CeO₂复合烧结助剂对放电等离子烧结氮化硅陶瓷致密化和性能的影响[J]. 硅酸盐学报, 2015, 43(12):1712-1718.
[7]	LIU W, TONG W X, LU X X, et al. Effects of different types of rare earth oxide additives on the properties of silicon nitride ceramic substrates[J]. Ceramics International, 2019, 45(9):12436-12442. DOI URL
[8]	徐照芸, 王波, 杨建锋, 等. Si₃N₄的氧化预处理对浆料流变性及多孔陶瓷性能的影响[J]. 科学通报, 2015, 60(3):309-315.
[9]	ZHANG J, LEI J, SHI Y, et al. Effect of Y₂O₃,La₂O₃ and MgO co-doping on densification,microstructure and propertiesof AlON ceramics[J]. Journal of Ceramic Science and Technology, 2017, 8(1):177-182.
[10]	詹创添, 吴利翔, 牛文彬, 等. 以ZrO₂-MgO-Y₂O₃为添加剂的气压反应重烧结Si₃N₄陶瓷的制备与性能研究[J]. 功能材料, 2019, 50(12):12108-12112.
[11]	DWIVEDI S P. Effect of ball-milled MgO and Si₃N₄ addition on the physical,mechanical and thermal behaviour of aluminium based composite developed by hybrid casting technique[J]. International Journal of Cast Metals Research, 2020, 33(1):88-124.
[12]	HU H L, LUO S B. Fabrication and flexural strength of porous Si₃N₄ ceramics with Li₂CO₃ and Y₂O₃ as sintering additives[J]. Journal of Central South University, 2020, 27(9):2548-2556. DOI URL
[13]	刘剑, 谢志鹏, 肖志才, 等. 烧结助剂对氮化硅陶瓷热导率和力学性能的影响[J]. 硅酸盐学报, 2020, 48(12):1-7.

原料	w/%
原料	M2	M4	M6	M8	M10	Y2	Y4	Y6	Y8	Y10
Si₃N₄粉	98	96	94	92	90	98	96	94	92	90
MgO粉	2	4	6	8	10	0	0	0	0	0
Y₂O₃粉	0	0	0	0	0	2	4	6	8	10

原料	w/%
原料	M2	M4	M6	M8	M10	Y2	Y4	Y6	Y8	Y10
Si₃N₄粉	98	96	94	92	90	98	96	94	92	90
MgO粉	2	4	6	8	10	0	0	0	0	0
Y₂O₃粉	0	0	0	0	0	2	4	6	8	10

[1]	Xu Xiaoying, Cao Haijie, Wei Lichao, Ma Xufeng. Application of energy dispersive X-ray fluorescence spectrometer in determination of magnesia composition [J]. Refractories, 2024, 58(4): 354-356.
[2]	You Jiegang, Zhao Xin, Qian Guohua, Zhang Xiao-fang, Zhang Guodong, Ma Beiyue. Development status of fused magnesia in southern Liaoning [J]. Refractories, 2024, 58(4): 357-361.
[3]	Tan Qitong, Zhao Huizhong, Yu Jun, Zhang Han, Tan Liqiang. Synthesis technology and properties of cordierite from solid waste resources [J]. Refractories, 2024, 58(3): 185-189.
[4]	Liang Xiaocheng, Feng Yu, Liu Zhongfei, Luo Xudong, Huang Min, Wu Feng. Effect of pre-synthesized CaZrO₃ on properties of magnesia-zirconia refractories [J]. Refractories, 2024, 58(3): 213-217.
[5]	He Weixiang, Luo Ming, He Liang, Ke Jifeng. R&D and application of MgO-C bricks for slag line of steel ladles with high refining ratios [J]. Refractories, 2024, 58(3): 234-237.
[6]	Zhou Yudong, Li Shipeng, Wang Wenwu, Zhang Yifan, Zhao Chenxiao. Research progress on preparation of high thermal conductivity silicon nitride ceramics [J]. Refractories, 2024, 58(3): 270-276.
[7]	Zhang Hui, Chai Qian, Zhang Hong, Wang Yixing, Hao Chenxi, Wang Xingyu. Effects of zirconia and lanthana co-doping on properties of porous cordierite ceramics [J]. Refractories, 2024, 58(2): 99-103.
[8]	Liu Zhongfei, Feng Yu, Liang Xiaocheng, Luo Xudong, Li Guangwei, Wu Feng. Effects of pre-synthesized magnesia-zirconia sand and calcination temperature on properties of magnesia-zirconia materials [J]. Refractories, 2024, 58(2): 110-115.
[9]	Fu Qiqi, Zhong Lihua, Bai Wenxian, Gan Yongtong, Deng Junjie. Damage mechanism of magnesia-chrome refractories for side-blown copper smelting furnace [J]. Refractories, 2024, 58(2): 148-154.
[10]	Sun Gege, Li Guohua, Jiao Changfa, Tian Lin. Effect of surfactant on microstructure of magnesia foam slurry and porous aggregates [J]. Refractories, 2024, 58(2): 161-166.
[11]	Meng Jiaze, Chen Ding, Gu Huazhi, Huang Ao, Fu Lyuping. Effect of microporous dolomite on properties of magnesia-calcia dry mix for tundishes [J]. Refractories, 2024, 58(1): 68-71.
[12]	Han Yihui, Cao Xiying, Feng Haixia, Wang Hui, Liu Jun, Pan Yuanshuai, Wang Jianbin. Properties of MgO-C refractories bonded with different binders [J]. Refractories, 2023, 57(5): 402-406.
[13]	Zhang Yanli, Peng Xigao, Zhang Xiaohui, Cheng Qing-xian, Wang Xiaoli. Research progress on zirconia-containing refractories [J]. Refractories, 2023, 57(5): 446-451.
[14]	Liu Xinggang, Gao Xinyu, Liu Tao, Li Yuqing. Effect of SiO₂ addition on properties of Mg-PSZ ceramics [J]. Refractories, 2023, 57(4): 291-294.
[15]	Feng Yu, Gao Yongjun, Wu Feng, Li Xinwei, Wang Lin, Luo Xudong, Xu Ruomeng. Effect of rare earth oxides and heat treatment temperature on properties of synthetic magnesia-zirconia materials [J]. Refractories, 2023, 57(4): 324-328.