Preparation of Y2Si2O7/ZrO2 Composites and Their Composition - Mechanical Properties - Tribology Relationships

IMR OpenIR

	Preparation of Y2Si2O7/ZrO2 Composites and Their Composition - Mechanical Properties - Tribology Relationships
	Z. Q. Sun; L. Wu; M. S. Li; Y. C. Zhou
	2013
发表期刊	Journal of the American Ceramic Society
ISSN	0002-7820
卷号	96 期号:10 页码:3228-3238
摘要	In this work, novel Y2Si2O7/ZrO2 composites were developed for structural and coating applications by taking advantage of their unique properties, such as good damage tolerance, tunable mechanical properties, and superior wear resistance. The -Y2Si2O7/ZrO2 composites showed improved mechanical properties compared to the -Y2Si2O7 matrix material, that is, the Young's modulus was enhanced from 155 to 188GPa (121%) and the flexural strength from 135 to 254MPa (181%); when the amount of ZrO2 was increased from 0 to 50vol%, the -Y2Si2O7/ZrO2 composites also presented relatively high facture toughness (>1.7MPam(1/2)), but this exhibited an inverse relationship with the ZrO2 content. The composition-mechanical property-tribology relationships of the Y2Si2O7/ZrO2 composites were elucidated. The wear resistance of the composites is not only influenced by the applied load, hardness, strength, toughness, and rigidity but also effectively depends on micromechanical stability properties of the microstructures. The easy growth of subcritical microcracks in Y2Si2O7 grains and at grain boundaries significantly contributes to the macroscopic fracture toughness, but promotes the pull-out of individual grains, thus resulting in a lack of correlation between the wear rate and the macroscopic fracture toughness of the composites.
部门归属	[sun, ziqi ; wu, ling ; li, meishuan] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sun, ziqi] univ wollongong, inst superconducting & elect mat, north wollongong, nsw 2500, australia. [zhou, yanchun] aerosp res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china. ; zhou, yc (reprint author), amer ceram soc, westerville, oh 43086 usa. ; yczhou714@gmail.com
关键词	Thermal-properties Hot Corrosion Molten-salt Gamma-y2si2o7 Ceramics Y2sio5 Wear Toughness Coatings Phase
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72407
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Sun,L. Wu,M. S. Li,et al. Preparation of Y2Si2O7/ZrO2 Composites and Their Composition - Mechanical Properties - Tribology Relationships[J]. Journal of the American Ceramic Society,2013,96(10):3228-3238.
APA	Z. Q. Sun,L. Wu,M. S. Li,&Y. C. Zhou.(2013).Preparation of Y2Si2O7/ZrO2 Composites and Their Composition - Mechanical Properties - Tribology Relationships.Journal of the American Ceramic Society,96(10),3228-3238.
MLA	Z. Q. Sun,et al."Preparation of Y2Si2O7/ZrO2 Composites and Their Composition - Mechanical Properties - Tribology Relationships".Journal of the American Ceramic Society 96.10(2013):3228-3238.