Zobrazeno 1 - 10
of 23
pro vyhledávání: '"E. M. Müller-Lorenz"'
Publikováno v:
Corrosion Science. 90:503-510
Selective oxidation experiments of binary iron alloys, containing 1 wt.%Al, Cr, Mn or Si were performed. Using hydrogen/water vapour mixtures adjusts low oxygen activities at the surface that hinder the formation of an outer oxide scale. This keeps t
Publikováno v:
Materials and Corrosion. 54:860-863
Samples of 5 high Cr-alloys were discontinuously exposed for 10,000 hours under severe metal dusting conditions, i. e. in flowing 49%CO-49%H 2 -2%H 2 O at 650°C. After each of the 11 exposure periods the mass change was determined and any coke remov
Publikováno v:
Materials and Corrosion. 54:785-792
Welded Ni-base alloys and Alloy 800 were exposed under metal dusting conditions at 600 °C and 650 C for up to 6000 hours. Alloy 800 was attacked very strongly already in the first days and Alloy 600 also rather soon and widespread, on both materials
Publikováno v:
Steel Research. 73:421-427
The inhibition of the reoxidation of direct reduced iron was investigated by establishing different contents of vapour phase inhibitors in oxidising gas mixture He-O 2 at 150 and 200 °C. The raw materials were iron oxide powder and iron ore pellets
Publikováno v:
Surface and Interface Analysis. 34:369-374
The kinetics and mechanisms of reactions on iron in CH 4 -H 2 and CO-H 2 -H 2 O mixtures have been studied, also in the presence of H 2 S, to understand carburization, iron carbide formation, metal dusting and carbon deposition. Rate equations and me
Publikováno v:
Materials Science Forum. :955-962
In strongly carburizing atmospheres metals and alloys are endangered by 'metal dusting', a disintegration into a dust of graphite and metal particles. Protection against metal dusting is possible by formation of a dense Cr-rich scale, which should be
Publikováno v:
ISIJ International. 41:S1-S8
Fundamental studies have been conducted on the kinetics and mechanisms of reactions of iron in CH 4 -H 2 and CO-H 2 -H 2 O mixtures, also in the presence of H 2 S, to understand carburization, iron carbide formation, metal dusting and carbon depositi
Publikováno v:
Materials at High Temperatures. 17:339-345
Metal dusting is a disintegration of metals and alloys into graphite and metal particles, caused by strongly carburizing gas mixtures mainly in the temperature range 400–700°C. Protection of steels against metal dusting is possible through the for
Publikováno v:
Materials and Corrosion. 50:614-621
In process industries coking is an annoying phenomenon, the carbon deposition causes decrease of heat transfer and hinders gas flow. Coking in a process may indicate metal dusting, i.e. the disintegration of metals and alloys in carbonaceous atmosphe
Publikováno v:
Materials and Corrosion. 49:336-339
Presence of H 2 S in a carburizing atmosphere causes S-adsorption which retards carbon transfer and deposition and can suppress metal dusting of iron and steels. In the latter process cementite Fe 3 C is an intermediate, graphite deposition would ini