CR2O3 PASSIVATED GAS TUBING SYSTEM FOR SPECIALTY GASES

Authors
SHIRAI Y NARAZAKI M OHMI T
Citation
Y. Shirai et al., CR2O3 PASSIVATED GAS TUBING SYSTEM FOR SPECIALTY GASES, IEICE transactions on electronics, E79C(3), 1996, pp. 385-391
Citations number
11
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEICE transactions on electronics → ACNP
ISSN journal
09168524
Volume
E79C
Issue
3
Year of publication
1996
Pages
385 - 391
Database
ISI
SICI code
0916-8524(1996)E79C:3<385:CPGTSF>2.0.ZU;2-K
Abstract
We have developed a complete chromium oxide (Cr2O3) passivated gas tub ing system by introducing ferritic stainless steel instead of conventi onal austenitic stainless steel (SUS316L). 100% Cr2O3 passivation film can be formed on electropolished ferritic stainless steel surface bec ause the diffusion coefficient of Cr in ferritic stainless steel is 10 (4) times larger than in austenitic stainless steel. In ferritic stain less steel, moreover, welded bead surface is covered by 100% Cr2O3 pas sivated film by an introduction of advanced welding technology.