CORROSION AND HIGH TEMPERATURE CONTROL
2012-02-13 22:02:17, Á¶È¸ : 471, Ãßõ : 29
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CORROSION CONTROL
1.CORROSIONÀ̶õ?
ÁÖº¯È¯°æ¿¡ÀÇÇÑ ÈÇÐÀûÀÎ ±Ý¼ÓºÎ½Ä, ÁÖº¯¿Âµµ¿¡¼ÀÇ Ã¶Àdzì, °í¿Â¿¡¼ÀÇ
öÀÇ ½ºÄÉÀϸµ, ÁÖ¹°ÀÇ graphitization ½ºÅÙ·¹½º½ºÆ¿ÀÇ PITTINGS,
½Ã¸àÆ®ÀÇ ºÎ½Ä
1)CORROSION COST
GNPÀÇ 3%³»Áö 4%ÇØ´çÇϸç ÀÌÁß 15-20%´Â ºÎ½ÄÄÁÆ®·ÑÀ» ÅëÇØ ºñ¿ëÀ»
ÁÙÀÏ ¼ö ÀÖ´Ù°í ¿¹»óÇÔ.
2)CORROSION°á°ú
ȯ°æ¿À¿°¹ß»ý, ÇÁ·£Æ® »ý»êÁß´Ü
3)CORROSIONÀ¸·ÎÀÎÇÑ »ç°í
»ó»óÇÒ ¼ö ¾ø´Â ÇÇÇØ, Àΰ£ÀÇ»ý¸íÀ» ¾Ñ¾Æ°£´Ù
2.±Ý¼Ó»êÈ(OXIDATION OF METAL)
1)»êÈÇʸ§ 40NM - 500NM : »ö°¥·Î ±¸ºÐ, ºûÀÇÆÄÀ庸´Ù ÀÛÀº°æ¿ì ±¸ºÐºÒ°¡.
2)»êȸÞÄ«´ÏÁò:
3)»êÈ¿¡ µû¸¥ ±Ý¼ÓºÐ·ù
LINEAR OXIDATION METAL
VOLATILE OXIDATION METAL
PARABOLOC OXIDATION METAL
LOGARITHMIC OXIDATION METAL
NOBLE METAL
3.ÈÇÐÀü±âºÐÇØ¿ø¸®
1)FREE ENERGY CONSIDERATION
2)ELECTROMOTIVE FORCE VALUES
3)NERNST EQUATION
4.ºÎ½ÄÀ» ÀÏÀÇÅ°´Â ¿ä¼Ò
5.PASSIVITY
6.ºÎ½Ä»óÅÂÀÇ °Ë»ç¹× ¸ð´ÏÅ͸µ
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