Paper Title:
Wear Behavior of AuAg/AgCuNiCe/Cu Commutator in DC Micromotor: A Case Study
  Abstract

In this paper, continuous running test was conducted using the disk drive spindle micromotors used in automobiles DVD. The commutator and brush were made of AuAg/AgCuNiCe/Cu and AgPd/CuNiSn layered composite respectively. In order to investigate the wear behavior of the commutator, the micromotors were dissected after ran continuously for different time. The worn surface of the commutator and the brush were characterized using an SEM equipped with EDS. Also, the cross section of the commutator was analyzed. It was shown that the AuAg layer was not totally worn off until 1500 h of running test. AuAg transferred from the commutator to the brush. It was interesting that Au was found on the silver layer where the depth of wear crater surpassed the thickness of the original AuAg layer. Small particles enriched in Cu, Ni and Ce were observed on the contact surface of AgCuNiCe layer, which was thought to improve the wear resistance of the commutator. The wear mechanism was mainly slight abrasion whereas no effect of arc was found on the sliding contact area.

  Info
Periodical
Advanced Materials Research (Volumes 146-147)
Edited by
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
Pages
825-828
DOI
10.4028/www.scientific.net/AMR.146-147.825
Citation
Y. Wang, Y. H. Xu, G. Y. Kuang, Y. Zhang, "Wear Behavior of AuAg/AgCuNiCe/Cu Commutator in DC Micromotor: A Case Study", Advanced Materials Research, Vols. 146-147, pp. 825-828, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Shao Fan Xu, Shao Ping Xu, Cheng Nan Zhu, Chuan Yong Yuan
Chapter 1: Composites
Abstract:Copper-plated TiB2-Cu-graphite composite, Cf-TiB2-Cu-graphite composite and Cf-copper-plated TiB2-Cu-graphite composite with the same TiB2...
8
Authors: Tanja Spremberg, Ingo Engler, Berend Denkena
Chapter 2: Wear and Friction Testing
Abstract:One way to improve the run-in period of the commutation system of an electrical motor is the modification of the commutator ́s roughness. The...
96
Authors: Jie Qiong Hu, Ming Xie, Ji Ming Zhang, Man Men Liu, Yong Tai Chen, You Cai Yang
Chapter 2: Advances in Materials Sciences and Processing Technologies
Abstract:This paper introduced the preparation technology and properties of Ag-MoS2, silver-graphite and AgPd/BZn series silver based brush...
254