[INFO] Tulisan ilmiah tentang metal dusting

(sumber : Gadang Priyotomo, Majalah KOROSI Vol.15 No.2 Oktober 2006, hal 77 - 83)

KEGAGALAN MATERIAL BERBASIS FERROUS AKIBAT PROSES METAL DUSTING

Intisari

Kegagalan material logam di lingkungan karburisasi sangat merugikan industri petrokimia,refining dan pembuatan gas sintesis. Proses metal dusting bertanggung jawab atas kerusakan logam paduan. Umumnya kerusakan terjadi di permukaan logam. Proses pembentukan lubang-lubang dan deposit karbon terjadi di permukaan. Metode pencegahan serangan metal dusting yaitu pembentukan lapisan protektif (Cr₂O₃, Al₂O₃ dll) di permukaan logam dan penghindaran temperatur kritis metal dusting antara 650⁰C -750⁰C

Kata Kunci : Karburisasi, korosi, temperatur tinggi, sementit, disposisi karbon

Abstract

A material failure for common metals in carburization circumstance has negative impact for petrochemical industries, refining and synthetic gas production. A metal dusting process takes the responsibility for destruction of a half of metal alloy. Generally this failure is happened on surface. Methods of prevention for metal dusting attack are to make protective oxide layer (Cr₂O₃, Al₂O₃, etc) on metal surface and to avoid critical temperature of metal dusting for range from 650⁰C to 750⁰C.

Key word : Carburization, corrosion, high temperature, cementite, carbon disposition.