Application of Nd2O3–Al2O3–SiO2 glass solder for joining of silicon carbide components
Application of Nd2O3–Al2O3–SiO2 glass solder for joining of silicon carbide components
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DOI：
10.1016/j.jeurceramsoc.2016.01.020
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发表时间：
2016-06
影响因子：
5.7
通讯作者：
S. Ahmad;M. Herrmann;M. Mahmoud;W. Lippmann;A. Hurtado;H. Seifert
中科院分区：
文献类型：
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作者：
S. Ahmad;M. Herrmann;M. Mahmoud;W. Lippmann;A. Hurtado;H. Seifert
采用熔淬法制备了nd2o3 - al2o3 - sio2体系玻璃。对所制备的玻璃进行热分析，以确定玻璃转变和结晶温度。制备的玻璃显示表面结晶，没有大块结晶的迹象。经1200℃氩气气氛莫来石热处理50 h后，XRD分析发现nd二硅酸相和未知晶相。此外，还证明了nd -铝硅酸盐玻璃可以作为激光辅助工艺连接碳化硅（SiC）元件的焊料。采用优化后的工艺条件生产的接头密封性（<1 × 10−9mbar l s−1），平均4点抗弯强度为150 MPa。断裂分析没有显示沿SiC/玻璃界面的断裂，这表明焊料玻璃与SiC表面具有良好的附着力。
Glasses in the Nd2O3–Al2O3–SiO2system were prepared using the melt–quench route. Thermal analyses of the prepared glasses were carried out to determine glass transition and crystallisation temperatures. The prepared glass showed surface crystallisation with no sign of bulk crystallisation. After long heat-treatment at 1200 °C for 50 h in argon atmosphere mullite, Nd-disilicate phases and an unknown crystalline phase were detected by XRD analysis. Furthermore, it was demonstrated that Nd-aluminosilicate glass can be used as solder for joining silicon carbide (SiC) components using laser-assisted process. The optimized used processing conditions produced joints with hermetic tightness (<1 × 10−9mbar l s−1) and an average 4-point bending strength of 150 MPa. Fracture analyses did not show fracture along the SiC/glass interface that indicates the good adhesion of the solder glass with SiC surface.