Spark electrochemical

Takeuchi T, Takeda Y, Funahashi R, Aihara T, Tabuchi M, Kageyama H, Nomura K, Tanimot K, and Miyazaki Y. Spark-plasma sintering of interconnector material (LaQ9Sr0, )Cr03. Electrochem. Soc. Proc. 2001 2001(16) 865-871. 

Although most work related to pore formation in silicon has involved electrochemical etching of silicon in HF solutions, porous silicon layers have also been formed by chemical etching and by spark erosion in vacuum. 

Hummel and Chang have shown that porous films can also been formed by a spark erosion technique [110]. The morphologies of these porous films exhibit less anisotropy than electrochemically formed porous structures although the pores propagate perpendicular to the surface. The growth rates of about 0.3 nm s are much slower than those of electrochemically formed porous layers. Porous layers formed in air and under nitrogen exhibited visible photoluminescence similar to the emission spectra obtained from electrochemically grown porous layers. 

The w,causes electrochemical exchange between the Mg and the Ag ion. The heat of reaction of this exchange provokes the pyrochemical effect. I a peroxide oxidizes Mg powd with incandescence (Ref 5). The mixt explodes when Heated to redness. When the mixt is exposed to moist air spontaneous combustion occurs., When carbon dioxide gas is passed over a mixt of powd Mg and Na peroxide, the mixt explodes (Ref 6). Stannic oxide, heated with Mg, explodes (Ref 13)., A mixt of sulfates and Mg may cause an expln (Ref 17.) It has been detd experimentally that a mixt of Mg powd with trichloroethylene or carbon tetrachloride will flash or spark under, Heavy impact (Ref 2l). Mg alloy powders contg more than 50% Mg readily ignite in air (Ref 20)... 

Grilli. M.L., Di Bartolomeo, E., Lunardi, A., Chevallier, L., Cordiner, S. and Traversa, E. (2005) Planar non-Nemstian electrochemical sensors Field test in the exhaust of a spark ignition engine. Sens. Actuators B, 108 (1—2), 319—25. 

Spark-assisted chemical engraving takes advantage of the electrochemical discharges generated in a gas film around an electrode, as described in Chapter 2. This gas film is a key element of the process. On one hand, the gas film is necessary for machining but, on the other hand, it conditions the quality of the machining. A fundamental understanding of the processes related to the gas film is essential. Of particular interest are ... 

V.K. Jain, P.S. Rao, S.K. Choudhury, K.P. Rajurkar Experimental investigations into travelling wire electrochemical spark machining (TW-ECSM) of composites. Trans. AS ME, Journal of Engineering for Industry 113 (1991), p. 75. 

V.K. Jain, P.M. Dixit, P.M. Pandey On the analysis of the electrochemical spark machining process. International Journal of Machine Tools and Manufacture 39 (1999), p. 165. 

V.K. Jain, S.K. Chak Electrochemical spark trepanning of alumina and quartz. Machining Science and Technology 4 (2000), pp. 277-290. 

V.K. Jain, S. Adhikary On the mechanism of material removal in electrochemical spark machining of quartz under different polarity conditions. Journal of Materials Processing Technology 200 (2008), pp. 460-470. 

Micromachining using electrochemical discharge phenomenon fundamentals and applications of spark assisted chemical engraving/Rolf Wuthrich. p. cm. - (Micro nano technologies)... 

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