STUDY OF INITIAL STAGE SINTERING OF NANOCRYSTALLINE α-Al_2O_3 POWDER BY ISOTHERMAL METHOD

Acta Metall Sin

1998, Vol. 34

Issue (2): 189-194 DOI:

Current Issue | Archive | Adv Search

STUDY OF INITIAL STAGE SINTERING OF NANOCRYSTALLINE α-Al_2O_3 POWDER BY ISOTHERMAL METHOD

LI Jiguang;SUN Xudong;WANG Yarong;DONG Wenxin;RU Hongqiang;HAO Shiming (School of Materials and Metallurgy; Northeastern University; Shenyang 110006)

Cite this article:

LI Jiguang;SUN Xudong;WANG Yarong;DONG Wenxin;RU Hongqiang;HAO Shiming (School of Materials and Metallurgy; Northeastern University; Shenyang 110006). STUDY OF INITIAL STAGE SINTERING OF NANOCRYSTALLINE α-Al_2O_3 POWDER BY ISOTHERMAL METHOD. Acta Metall Sin, 1998, 34(2): 189-194.

Download:

PDF(424KB)
Export: BibTeX | EndNote (RIS)

Abstract Isothermal sintering method was used to study the initial stage sintering of a soft and a hard agglomerated α-Al2O3 powder with a diameter of 10 nm. For both powders the initial stage sintering was found to be controlled by grain boundary diffusion. Activation energies of grain boundary diffusion of the soft and the hard agglomerated powders were determined to be 354 and 481 kJ/mol respectively and the diffusion coefficient of the soft agglomerated α-Al2O3powder from 900 to 1200 ℃ was estimated.

Key words: alumina ultrafine powder isothermal sintering grain boundary decision activation energy

Received: 18 February 1998

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors

URL:

https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1998/V34/I2/189

1Johnson D L.J Appl Phys, 1969; 40: 192
2 Young W S, Cutler I B.J Am Ceram Soc, 1970; 53(12): 659
3Johnson D L,Cutler I B.J Am Ceram—Soc, 1963;46(11):545
4Rhodes W H.J Am Ceram Soc,1981;64(1):19
5李继光,孙旭东,茹红强,宋丹,孙祥云,李晓东,郝士明.材料研究学报,待发表 (Li Jiguang, Sun Xudong, Ru Hongqiang, Song Dan, Sun Xiangyun, Li Xiaodong, Hao Shiming. Chn J Mater Res, to be published)
6Roosen A,Hausner H.Adv Ceram Mater,1988;3(2):31
7Johnson D L,Cutler IB.J Am Ceram Soc,1963;46(11):541
8Kingery W D, Berg M, J Appl Phys,1955;26:1205
9Coble R L J.J Am Ceram Soc,1958;41(2):55

[1]	ZHAO Manman, QIN Sen, FENG Jie, DAI Yongjuan, GUO Dong. Effect of Al and Ni on Hot Deformation Behavior of 1Cr9Al(1~3)Ni(1~7)WVNbB Steel[J]. 金属学报, 2020, 56(7): 960-968.
[2]	Ying LI,Chao SUN,Jun GONG. Performance Research of Magnesium Base Lanthanum Hexaaluminate Prepared by Co-Precipitation[J]. 金属学报, 2019, 55(5): 657-663.
[3]	Shubo LI, Wenbo DU, Xudong WANG, Ke LIU, Zhaohui WANG. Effect of Zr Addition on the Grain Refinement Mechanism of Mg-Gd-Er Alloys[J]. 金属学报, 2018, 54(6): 911-917.
[4]	HU Ke, LI Xiaoqiang, QU Shengguan, YANG Chao, LI Yuanyuan. DEVELOPMENT OF MASTER SINTERING CURVE FOR SPARK PLASMA SINTERING OF 93W-5.6Ni-1.4Fe HEAVY ALLOY[J]. 金属学报, 2014, 50(6): 727-736.
[5]	ZHOU Deqiang, LIU Xiongjun, WU Yuan, WANG Hui, LV Zhaoping. RECRYSTALLIZATION BEHAVIOR AND ITS INFLU- ENCES ON MECHANICAL PROPERTIES OF AN ALUMINA-FORMING AUSTENITIC STAINLESS STEELS[J]. 金属学报, 2014, 50(10): 1217-1223.
[6]	ZHOU Xiaowei SHEN Yifu GU Dongdong. MICROSTRUCTURE AND HIGH TEMPERATURE OXIDATION RESISTANCE OF NANOCRYSTALLINE Ni–CeO₂COMPOSITE COATINGS DEPOSITED BY DOUBLE–PULSED ELECTRO DEPOSITION[J]. 金属学报, 2012, 48(8): 957-964.
[7]	ZHU Hongyan, MA Weimin, WEN Lei, GUAN Renguo,MA Lei, WU Nan. SYNTHESIS KINETICS OF (Y, Gd)₂O₃∶Eu³⁺ NANO-POWDERS DURING PROCESS OF PREPARATION[J]. 金属学报, 2012, 48(6): 671-677.
[8]	TIAN Chenggang CUI Chuanyong GU Yuefeng SUN Xiaofeng . EFFECT OF SOLUTION TREATMENT ON THE INVERSE DYNAMIC STRAIN AGING OF A Ni–Co BASE SUPERALLOY[J]. 金属学报, 2012, 48(10): 1223-1228.
[9]	SONG Renbo ZHANG Yongkun WEN Xinli JIA Yisu. HOT DEFORMATION BEHAVIOR OF A HIGH STRENGTH CONTAINER STEEL COMPOUNDED WITH Nb-B[J]. 金属学报, 2011, 47(1): 34-40.
[10]	CHEN Liqing ZHAO Yang XU Xiangqiu LIU Xianghua. DYNAMIC RECRYSTALLIZATION AND PRECIPITATION BEHAVIORS OF A KIND OF LOW CARBON V–MICROALLYED STEEL[J]. 金属学报, 2010, 46(10): 1215-1222.
[11]	ZHANG Guikai LI Ju CHEN Chang'an DOU Sanping LING Gouping. PREPARATION OF ALUMINIDE COATINGS ON HR-2 STAINLESS STEEL[J]. 金属学报, 2009, 45(8): 983-987.
[12]	HAN Lizhan CHEN Ruikai GU Jianfeng PAN Jiansheng. BEHAVIOR OF AUSTENITE GRAIN GROWTH IN X12CrMoWVNbN10-1-1 FERRITE HEAT-RESISTANT STEEL[J]. 金属学报, 2009, 45(12): 1446-1450.
[13]	XU Min YI Jun QUAN Mingxiu WANG Yandong ZUO Liang. EFFECT OF Nb ON CRYSTALLIZATION KINETICS OF Fe-Co-Nd-B AMORPHOUS ALLOYS[J]. 金属学报, 2009, 45(1): 91-96.
[14]	KANG Mokuang ZHANG Mingxing LIU Feng ZHU Ming. OVERALL ACTIVATION ENERGY OF ISOTHERMAL TRANSFORMATION IN METAL ALLOY AND ITS MECHANISM I. Medium Temperature (Bainite) Isothermal Transformation in Steels[J]. 金属学报, 2009, 45(1): 25-31.
[15]	KANG Mokuang ZHANG Mingxing LIU Feng ZHU Ming. OVERALL ACTIVATION ENERGY OF ISOTHERMAL TRANSFORMATION IN METAL ALLOY AND ITS MECHANISM II. Isothermal Transformation in β Brasses[J]. 金属学报, 2009, 45(1): 32-36.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed