발간논문

Home > KJMM 논문 > 발간논문

Vol.36, No.9, 1484 ~ 1490, 1998
Title
Effect of Si Oxide Interlayer on the Scale Adhesion of 19Cr-Ti Ferritic Stainless Steel
박수호 , 이윤용 , 이용득 , 류두형 Soo Ho Park , Yun Yong Lee , Yong Deuk Lee , Du Hyung Ryu
Abstract
The effect of Si addition on the scale adhesion of 19Cr-Ti ferritic stainless steel, which is used for stud pin as a sealing material for cathode ray tube, has been studied by using press compression test, visual inspection, optical micrograph and electronic microanalysis. A spalling behavior of scale formed on the surface by oxidation treatment at 1100℃ for 30∼40 minutes in 75%H₂+25%N₂ gas mixtures was mainly governed by the morphology of SiO₂ layer formed at scale/metal interface. As Si content exceeded more than 0.5%, a continuous silica interlayer was produced and then the adhesion of scale which is mainly 2∼4㎛ thickness of Cr-oxide layer was abruptly decreased. It is due to a low fracture toughness of SiO₂ formed at scale/metal interface and a generation of residual stress at scale/metal interface during cooling after oxidation treatment. The residual stress might originate from a great discrepancy in thermal expansion coefficient between matrix and silica.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.