Joining and testing of alumina fibre reinforced YAG-ZrO2 matrix composites

被引：18

作者：

Akram, Muhammad Yasir ^{[1
]}

Ferraris, Monica ^{[1
]}

Casalegno, Valentina ^{[1
]}

Salvo, Milena ^{[1
]}

Puchas, Georg ^{[2
]}

Knohl, Stefan ^{[2
]}

Krenkel, Walter ^{[2
]}

机构：

[1] Politecn Torino, Dept Appl Sci & Technol, Turin, Italy

[2] Univ Bayreuth, Dept Ceram Mat Engn, Bayreuth, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 04期

关键词：

Oxide/oxide composites; Joining; Alumina fibres; YAG-ZrO2; Glass-ceramics; GLASS-CERAMIC SEALANT; VISCOUS SEALING GLASS; OXIDATION BEHAVIOR; FLEXURAL STRENGTH; OXIDE; PERFORMANCE; TECHNOLOGY; KINETICS; CARBIDE; METAL;

D O I：

10.1016/j.jeurceramsoc.2017.11.026

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：

Alumina (Nexte (TM) 610) fibre reinforced YAG-ZrO2 matrix composites were successfully joined by using different brazing alloys, metallic interlayers and a glass-ceramic. All joints were mechanically stable and free of cracks. Three commercial brazing alloys and a new alloy based on Ti/Cu/Al interlayers were selected to join these composites for applications in a non-oxidizing environment. A glass-ceramic based on SiO2-Al2O3-CaO-MgO was developed in case the joined component needs to be oxidation resistant. To evaluate the thermal stability, all joined composites were aged up to 100 h in air at 550 degrees C for brazing joints or 850 degrees C and 930 degrees C for glass-ceramic joints. The mechanical strength was measured using single lap and four point bending tests before and after ageing. Four point bending tests on glass-ceramic joined samples showed an average joint strength of about 70 MPa which is 35% of as-received composites.

引用

页码：1802 / 1811

页数：10

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