Transcription of SURFACE PRETREATMENT BY PHOSPHATE CONVERSION …
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130. 9 (2005) 130-177 Sankara Narayanan SURFACE PRETREATMENT BY PHOSPHATE . CONVERSION COATINGS A REVIEW. Sankara Narayanan National Metallurgical Laboratory, Madras Centre CSIR, Complex, Taramani, Chennai-600 113, India Received: April 22, 2005. Abstract. Phosphating is the most widely used metal PRETREATMENT process for the SURFACE treatment 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 lubricative properties, it plays a significant role in the automobile, process and appliance industries. Though the process was initially developed as a simple method of preventing corrosion, the changing end uses of phosphated articles have forced the modification of the existing processes and development of innovative methods to substitute the conventional ones.
Surface pretreatment by phosphate conversion coatings Œ a review 131 3.7.1.5. Thermal treatments and machining 3.7.2. Phosphating parameters 3.8.
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