Kinked grain boundaries in alumina doped with Y2O3

被引：9

作者：

Kim, MJ ^{[1
]}

Cho, YK ^{[1
]}

Yoon, DY ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2004年 / 87卷 / 04期

关键词：

D O I：

10.1111/j.1551-2916.2004.00717.x

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：

Polycrystalline alumina specimens with and without MgO doping show smoothly curved grain boundaries after heat treatment at 1400degreesC indicating their rough structure. When heat-treated at 1400degrees and 1500degreesC for 24 h after packing in an alumina-YAG powder mixture, many grain boundaries (without any liquid phase) develop kinks of large and small scales as observed by scanning electron microscopy and transmission electron microscopy. The addition of Y2O3 at concentrations close to the solubility limit is thus shown to induce the grain boundary transition to singular structures.

引用

页码：717 / 719

页数：3

共 28 条

[1] FACETING TRANSFORMATION AND ENERGY OF A SIGMA-3 GRAIN-BOUNDARY IN SILVER [J].

BARG, AI ;

RABKIN, E ;

GUST, W .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (11) :4067-4074

[2] MECHANISM FOR THE ROLE OF MAGNESIA IN THE SINTERING OF ALUMINA CONTAINING SMALL AMOUNTS OF A LIQUID-PHASE [J].

BATEMAN, CA ;

BENNISON, SJ ;

HARMER, MP .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (07) :1241-1244

[3] GRAIN BOUNDARY FACETING OF (101BAR0) TILT BOUNDARIES IN ZINC [J].

BISHOP, GH ;

HARTT, WH ;

BRUGGEMAN, GA .

ACTA METALLURGICA, 1971, 19 (01) :37-+

[4]

Cho JH, 1997, J AM CERAM SOC, V80, P1013

[5] Temperature dependence of grain boundary structure and grain growth in bulk silicon-iron [J].

Choi, JS ;

Yoon, DY .

ISIJ INTERNATIONAL, 2003, 43 (02) :245-250

[6] The temperature dependence of abnormal grain growth and grain boundary faceting in 316L stainless steel [J].

Choi, JS ;

Yoon, DY .

ISIJ INTERNATIONAL, 2001, 41 (05) :478-483

[7] GRAIN-BOUNDARY FACETING IN CU-BI ALLOYS [J].

DONALD, AM ;

BROWN, LM .

ACTA METALLURGICA, 1979, 27 (01) :59-66

[8] OBSERVATION OF A REVERSIBLE GRAIN-BOUNDARY FACETING TRANSITION INDUCED BY CHANGES OF COMPOSITION [J].

FERENCE, TG ;

BALLUFFI, RW .

SCRIPTA METALLURGICA, 1988, 22 (12) :1929-1934

[9] CREEP OF DUPLEX MICROSTRUCTURES [J].

FRENCH, JD ;

ZHAO, JH ;

HARMER, MP ;

CHAN, HM ;

MILLER, GA .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (11) :2857-2865

[10] GRAIN-BOUNDARY FACETING OF [10-10] TILT BOUNDARIES IN ZINC .2. [J].

HARTT, WH ;

BISHOP, GH ;

BRUGGEMAN, GA .

ACTA METALLURGICA, 1974, 22 (08) :971-983

← 1 2 3 →