高耐熱性溶融アルミニウムめつき鋼板の開発(溶融めつき)(<特集>表面処理)

概要

論文の詳細を見る
A study has made of the high temperature properties of a newly developed Al-9%Si coated extra-low carbon-0.2Ti-0.6Si-1.0Mn steel sheet. Heating at high temperatures resulted in formation of diffusion layer of Al such as a cementation coatings by calorizing at the surface of the steel, because Ti in the substrate stabilizes interstitial elements which can inhibit Al to diffuse in α-Fe. Therefore the weight gain by oxidation of the steel was only about ten times that of SUS410L stainless steel sheet at 700℃ and 800℃ in air. It was found that the alloying behavior between coatings and substrate was caused by diffusion of Al from coatings to substrate, and diffusion depth of Al was represented as a function of temperature and time. Since the strength of the steel at high temperature up to 800℃ is nearly equal to that of SUS410L, it is expected to apply the steel to automotive exhaust systems and the like in place of SUS410L.
社団法人日本鉄鋼協会の論文
1986-06-01