Title :
Adjustment state and quasisteady state of structure and composition of AgMeO contacts by breaking arcs
Author :
Wan, Jiang-Wen ; Zhang, Ji-gao ; Rong, Ming-Zhe
Author_Institution :
Res. Lab. of Electr. Contacts, Beijing Univ. of Posts & Telecommun., China
Abstract :
The experiments for erosion behavior of AgCdO, AgSnO/sub 2/ and AgZnO contacts by breaking arcs were carried out in an accelerated testing machine. The surface undergone melting temperature range was examined by SEM, and the element compositions of the surface were analyzed by EDS. The microstructure and composition of the surface after melting range were analyzed. The mechanism of hole formation is described. Finally, the arc erosion and microstructure as well as composition of the surface after melting range are discussed. With increasing operations, two stages named as adjustment state and quasi steady state are discussed.
Keywords :
circuit-breaking arcs; electrical contacts; life testing; melting; particle reinforced composites; scanning electron microscopy; silver; wear; AgCdO; AgSnO/sub 2/; AgZnO; EDS; SEM; accelerated testing machine; adjustment state; breaking arcs; element compositions; erosion behavior; hole formation; quasisteady state; surface undergone melting temperature range; Composite materials; Contacts; Life estimation; Microstructure; Modems; Scanning electron microscopy; Steady-state; Surface morphology; Temperature distribution; Testing;
Conference_Titel :
Electrical Contacts, 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on
Conference_Location :
Arlington, VA, USA
Print_ISBN :
0-7803-4925-3
DOI :
10.1109/HOLM.1998.722446
