Functionally graded Al2O3-based ceramic systems by gel casting method

被引：2

作者：

Topates, Gulsum ^{[1
]}

Akca, Erdem ^{[2
]}

Tur, Yahya Kemal ^{[3
]}

Duran, Cihangir ^{[1
]}

机构：

[1] Ankara Yildirim Beyazit Univ, Dept Met & Mat Engn, TR-06010 Ankara, Turkiye

[2] Sivas Cumhuriyet Univ, Dept Met & Mat Engn, Sivas, Turkiye

[3] Gebze Tech Univ, Dept Mat Sci & Engn, Kocaeli, Turkiye

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2025年 / 22卷 / 01期

关键词：

alumina; gel casting; graded ceramic; wear; MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; 8Y-FSZ CERAMICS; PHASE; MICROSTRUCTURES; FABRICATION; COMPOSITES; ZIRCONIA;

D O I：

10.1111/ijac.14898

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：

Functionally graded ceramic systems consisted of Al2O3/(Al2O3-ZrO2) and Al2O3/(Al2O3-Nd2Ti2O7) have been produced by gel casting. In Al2O3/ZrO2 systems, Al2O3 was gathered with three different Al2O3/ZrO2 mixtures with varying ZrO2 contents. For Al2O3/Nd2Ti2O7 system, Al2O3 layer was combined with 3 mol% Nd2Ti2O7-doped Al2O3. All samples sintered at 1480 and 1540 degrees C showed strong adhesion between layers without any crack formation. In the Al2O3/ZrO2 systems, both layers were intact; a distinct separation was observed, whereas a large reaction zone was observed for the Al2O3/Nd2Ti2O7 system as a consequence of reaction between both phases. The separation between layers for both systems was identified by SEM-EDX analyses. The hardness and wear tests of the samples showed that functional grading approach ensures combining various physical properties in a monolithic body.

引用

页数：10

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