Experimental Research on Electrochemical Micromachining

Experimental Research of On-Line Fabrication of Tool-Electrode Base on Electrochemical Micromachining

Progress of Precision Engineering and Nano Technology - Key Engineering Materials ◽

10.4028/0-87849-430-8.302 ◽

2007 ◽

pp. 302-306

Author(s):

Zhong Ning Guo ◽

F.Z. Zeng ◽

G.H. Han ◽

Zhi Gang Huang

Keyword(s):

Experimental Research ◽

Electrochemical Micromachining ◽

Tool Electrode ◽

On Line

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Experimental Research of On-Line Fabrication of Tool-Electrode Base on Electrochemical Micromachining

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.339.302 ◽

2007 ◽

Vol 339 ◽

pp. 302-306

Author(s):

Zhong Ning Guo ◽

F.Z. Zeng ◽

G.H. Han ◽

Zhi Gang Huang

Keyword(s):

Experimental Research ◽

Position Error ◽

New Method ◽

Electrochemical Micromachining ◽

Tool Electrode ◽

Machining Mechanism ◽

Machining Precision ◽

Micro Tool ◽

On Line

A new method for on-line fabrication of micro tool-electrodes is presented in this paper. The method is base on the machining mechanism of electrochemical micromachining. By exchanging the polarities of the tool-electrodes and workpiece repeatedly, micro tool-electrode appropriate for electrochemical micromachining can be obtained through mutual machining. Because the processes are carried out on-line, the position error and clamp error caused by twice-clamp of tool-electrodes can be avoided, and the machining precision can be improved greatly. This method will be very important to electrochemical generating micromachining. Experiments are carried out, and a tool-electrode with the pinpoint of 20μm can be machined stably.

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Secondary Transfer Effect of Contact

Social Psychology ◽

10.1027/1864-9335.40.2.55 ◽

2009 ◽

Vol 40 (2) ◽

pp. 55-65 ◽

Cited By ~ 146

Author(s):

Thomas F. Pettigrew

Keyword(s):

Cognitive Dissonance ◽

Experimental Research ◽

Intergroup Contact ◽

Transfer Effect ◽

Evaluative Conditioning ◽

Transfer Effects ◽

Secondary Transfer ◽

Primary Reduction

This paper reviews the evidence for a secondary transfer effect of intergroup contact. Following a contact’s typical primary reduction in prejudice toward the outgroup involved in the contact, this effect involves a further, secondary reduction in prejudice toward noninvolved outgroups. Employing longitudinal German probability samples, we found that significant secondary transfer effects of intergroup contact exist, but they were limited to specific outgroups that are similar to the contacted outgroup in perceived stereotypes, status or stigma. Since the contact-prejudice link is bidirectional, the effect is inflated when prior prejudice reducing contact is not controlled. The strongest evidence derives from experimental research. Both cognitive (dissonance) and affective (evaluative conditioning) explanations for the effect are offered.

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