Zobrazeno 1 - 10
of 94
pro vyhledávání: '"D. L. Douglass"'
Autor:
D. L. Douglass, I. C. Chen
Publikováno v:
Oxidation of Metals. 52:195-207
Co-10Fe, Co-20Fe, and Co-40Fe alloys containing3 at.% Al were internally nitrided inNH3/H2 mixtures over the range700-1000°C. The kinetics of thickening of theinternal-reaction zone followed the parabolic rate law, suggesting thatsolid-state diffusi
Autor:
A. T. Allen, D. L. Douglass
Publikováno v:
Oxidation of Metals. 51:1-22
Ni-2V, Ni-5V, Ni-12V, and Ni-3Nb alloys (w/o)were nitrided in 10 v/o NH3(bal.H2) over the range of 700-1000°C. Thegrowth rates of the reaction zones followed parabolicbehavior for all of the alloys from 700 to 900°C. At 1000°C, Ni-2V andNi-3Nb for
Autor:
D. L. Douglass, R. Shiring
Publikováno v:
Oxidation of Metals. 52:353-377
The sulfidation behavior of Re and three Co-Realloys, 15, 30, and 45 w/o, was studied over thetemperature range 700-800°C at sulfurpressures of 10-4 and 10-2 atm. The kinetics of sulfidation followed theparabolic rate law and the activation energies
Autor:
D. L. Douglass, A. T. Allen
Publikováno v:
Oxidation of Metals. 51:199-219
Ni-2V, Ni-5V, Ni-12V, Ni-10Cr, Ni-20Cr, andNi-3Nb alloys were carburized in 1.5 v/oC3H6 (bal. H2) over therange 700-1000°C. Carburization of Ni-5V, Ni-12V,Ni-20Cr, and Ni-3Nb obeyed the parabolic rate law. Ni2V and Ni-10Cr, however, formed onlythin
Publikováno v:
Oxidation of Metals. 50:327-354
The sulfidation of three Cu-Cr alloys withnominal Cr contents of 25, 50, and 75 wt.% and of thetwo pure metals has been studied at 400-600°C inH2-H2S mixtures under sulfurpressures of 10-12 atm at 400 and 500°C and 10-10 atm at 500and 600°C, sligh
Publikováno v:
Oxidation of Metals. 49:169-186
The corrosion of a Cu-15 vol.% Nb alloy byH2-H2S mixtures has been studiedunder 10-12 atm S2 at 400 and500°C and under 10-10 atm S2at 500 and 600°C. The alloy is a two-phase mixtureof the two terminal solid solutions and is composed of a Cu-richmat
Publikováno v:
Oxidation of Metals. 48:357-380
Publikováno v:
Oxidation of Metals. 45:529-620
The results of a third international workshop on “New Knowledge and Open Questions of High-Temperature Corrosion” that took place in August 1994 in Gohrisch, Saxony, Germany, are presented. The workshop was sponsored by Stiftung Volkswagenwerk an
Autor:
D. L. Douglass
Publikováno v:
Oxidation of Metals. 44:81-111
Wagner's classical treatment of internal oxidation (generic name allowing for reaction with oxygen, nitrogen, carbon or sulfur) assumed ideal conditions such as uninhibited dissolution of the gas, formation of spherical particles, diffusion of the ox
Publikováno v:
Oxidation of Metals. 42:239-247
A calculation of the parabolic rate law for internal oxidation in binary alloys expressed in terms of weight gain shows that its dependence on the concentration of the most-reactive component is different from that predicted by the classical Wagner t