Transcription of SURFACE PRETREATMENT BY PHOSPHATE …
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SURFACE PRETREATMENT BY PHOSPHATE …
Sankara NarayananCorresponding author: Sankara Narayanan, e-mail: 9 (2005) 130-177 2005 Advanced Study Center Co. PRETREATMENT BY PHOSPHATECONVERSION COATINGS A Sankara NarayananNational Metallurgical Laboratory, Madras Centre CSIR, Complex, Taramani, Chennai-600 113, IndiaReceived: April 22, 2005 Abstract. Phosphating is the most widely used metal PRETREATMENT process for the surfacetreatment and finishing of ferrous and non-ferrous metals. Due to its economy, speed of opera-tion and ability to afford excellent corrosion resistance, wear resistance, adhesion and lubricativeproperties, it plays a significant role in the automobile, process and appliance industries. Thoughthe process was initially developed as a simple method of preventing corrosion, the changingend uses of phosphated articles have forced the modification of the existing processes anddevelopment of innovative methods to substitute the conventional ones. To keep pace with therapid changing need of the finishing systems, numerous modifications have been put forth intheir development - both in the processing sequence as well as in the phosphating review addresses the various aspects of phosphating in detail.
Surface pretreatment by phosphate conversion coatings Πa review 131 3.7.1.5. Thermal treatments and machining 3.7.2. Phosphating parameters 3.8.
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