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  1. No Access

    Article

    Metal Dusting of Fe–Cr and Fe–Ni–Cr Alloys Under Cyclic Conditions

    Metal dusting is the disintegration of alloys into carbon and metal particles during high-temperature exposure to carbon-bearing gases. Model Fe–Cr and Fe–Ni–Cr alloys were studied to test the hypothesis that M3C...

    C.H. Toh, P.R. Munroe, D.J. Young in Oxidation of Metals (2002)

  2. No Access

    Article

    Rapid Growth of SiO2 Nanofibers on Silicon-Bearing Alloys

    Exposure of Ni–Si and Co–Si alloys to Ar–CO2 and Ar–CO–CO2 gases at 1130°C led to rapid growth of crystalline SiO2 nanofibers from the alloy surfaces. The fibers were circular in cross section, of diameter about ...

    P. Carter, B. Gleeson, D. J. Young in Oxidation of Metals (2001)

  3. No Access

    Article

    Simultaneous Internal Oxidation and Nitridation of Ni–Cr–Al Alloys

    A series of Ni–Cr–Al alloys was subjected to thermal cycling to 1100°C in air for up to 260 1-hr cycles. All alloys exhibited poor corrosion resistance. Repeated scale spallation led to subsurface alloy deplet...

    S. Han, D. J. Young in Oxidation of Metals (2001)

  4. No Access

    Article

    The Corrosion Behavior of Sulfidation-Resistant Fe–Mo–Al Alloys in H2/H2S Atmospheres at 900°C

    The corrosion behavior of Fe–22Mo–10Al (a/o, atom %),Fe–20.5Mo–15.7Al, and Fe–10Mo–19Al was examined inflowing H2/H2S gases of 4 Pa sulfur partial pressureat 900°C. Al2O3 was stable on all the alloys inthe atmosp...

    R. Y. Chen, D. J. Young, S. Blairs in Oxidation of Metals (2000)

  5. No Access

    Chapter

    CCD Imager Technology Development at Lincoln Laboratory

    We describe here the continuing research in large-area, back-illuminated CCD imagers at MIT Lincoln Laboratory in collaboration with the University of Hawaii Consortium. Among the developments are a two-layer ...

    B. E. Burke, J. A. Gregory, A. H. Loomis, C. C. Cook… in Optical Detectors For Astronomy II (2000)

  6. No Access

    Article

    Factors Affecting Chromium Carbide Precipitate Dissolution During Alloy Oxidation

    Ferrous alloys containing significant volumefractions of chromium carbides were formulated so as tocontain an overall chromium level of 15% (by weight) buta nominal metal matrix chromium concentration of only ...

    R. N. Durham, B. Gleeson, D. J. Young in Oxidation of Metals (1998)

  7. No Access

    Article

    Large-Area Back-Illuminated CCD Imager Development

    We describe recent work in the area of large, back-illuminated CCD imagers at M.I.T. Lincoln Laboratory as well as new technology applicable to astronomy. We completed in 1995 the development of a 2560 x 1960-...

    B. E. Burke, J. A. Gregory, R.W. Mountain, B. B. Kosicki… in Experimental Astronomy (1998)

  8. No Access

    Chapter and Conference Paper

    Large-Area Back-Illuminated CCD Imager Development

    We describe recent work in the area of large, back-illuminated CCD imagers at M.I.T. Lincoln Laboratory as well as new technology applicable to astronomy. We completed in 1995 the development of a 2560 x 1960-...

    B. E. Burke, J. A. Gregory, R. W. Mountain… in Optical Detectors for Astronomy (1998)

  9. No Access

    Article

    Effect of nanocrystallization on the corrosion resistance of K38G superalloy in CO + CO2 atmospheres

    The corrosion resistance of the cast superalloy K38G and a sputtered nanocrystalline coating of the same material was investigated in pure CO in the temperature range, 850–1000°C and in CO-20 vol.% CO2 at 900°C. ...

    Fuhui Wang, D. J. Young in Oxidation of Metals (1997)

  10. No Access

    Article

    Comparison of internal nitridation reactions in ammonia and in nitrogen

    Nine commercial high-temperature alloys were reacted with NH3 and with N2-5%H2 at temperatures of 1000–1200°C. In all cases extensive internal nitridation developed according to parabolic kinetics. Reaction with ...

    K. Tjokro, D. J. Young in Oxidation of Metals (1995)

  11. No Access

    Article

    High-temperature corrosion in mixed gas environments

    Scaling reactions between pure metals and multiple oxidant gases are reviewed briefly. It is recognized that elemental oxidant activities are usually so low that the actual reactant species are heteronuclear m...

    D. J. Young, S. Watson in Oxidation of Metals (1995)

  12. No Access

    Article

    Effects of yttrium and zirconium additions on the high-temperature sulfidation behavior of an Fe−10Mo−20Al−8Mn alloy

    The effects of zirconium and yttrium additions on the sulfidation behavior of an Fe−10Mo−20Al−8Mn(a/o, atom percent) alloy were examined in flowing H2/H2S gas of 4Pa sulfur partial pressure at 900°C. Good scale p...

    Yisheng Chen, D. J. Young, S. Blairs in Oxidation of Metals (1994)

  13. No Access

    Article

    High-temperature corrosion of Cr2O3-forming alloys in CO-CO2-N2 atmospheres

    The corrosion of Fe−28Cr, Ni−28Cr, Co−28Cr, and pure chromium in a number of gas atmospheres made up of CO−CO2(−N2) was studied at 900°C. In addition, chromium was reacted with H2−H2O−N2, and Fe−28Cr was reacted ...

    X. G. Zheng, D. J. Young in Oxidation of Metals (1994)

  14. No Access

    Article

    A kinetic and morphological study of the coking of some heat-resistant steels

    The coking behaviour of a range of austenitic, heat-resistant steels has been examined in the temperature range 700-1000°C. At and below 800°C, catalytic coke in the form of bundles of filaments formed at loca...

    D. R. G. Mitchell, D. J. Young in Journal of Materials Science (1994)

  15. No Access

    Article

    High-temperature-sulfidation behavior of Fe-Mo-Mn-Al alloys

    The sulfidation behavior of multiphase, iron-based alloys containing up to 24 a/o molybdenum, up to 16.3 a/o manganese, and up to 24 a/o aluminum was examined in flowing H 2 /H ...

    Yisheng Chen, D. J. Young, S. Blairs in Oxidation of Metals (1993)

  16. No Access

    Article

    Sulfidation behavior of Fe-27Mn-(0-17.3)Mo(a/o) alloys

    Iron-base alloys containing ca. 27 a/o (atomic percent) manganese and up to 17.3 a/o molybdenum were sulfidized in H2/H2S gases of 4 Pa sulfur partial pressure at temperatures of 700–1000° C. Three-layered scales...

    Yisheng Chen, D. J. Young, S. Blairs in Oxidation of Metals (1993)

  17. No Access

    Article

    The effect of molybdenum and aluminium additions on the carburization behaviour of high temperature steel

    D. R. G. Mitchell, D. J. Young in Journal of Materials Science Letters (1993)

  18. No Access

    Article

    The hot-corrosion behavior of novel CO-deposited chromium-modified aluminide coatings

    This paper reports the successful co-deposition of inclusion-free chromiummodified aluminide coatings using a pack-cementation process. The substrate used was the nickel-base superalloy, René 80H. The coatings...

    B. Gleeson, W. H. Cheung, W. Da Costa, D. J. Young in Oxidation of Metals (1992)

  19. No Access

    Article

    The transition from single to double oxide growth during the high temperature corrosion of a pure metal by a single oxidant

    This paper considers the effects of a layer of lower compound on the overall corrosion kinetics in a single oxidant of a pure metal forming two different compounds. It is shown that if both compounds grow toge...

    F. Gesmundo, F. Viani, D. J. Young in Oxidation of Metals (1992)

  20. No Access

    Article

    Kinetic and morphological development of oxide-sulfide scales on iron at 1073 K

    The corrosion behavior of pure iron has been investigated at 1073 K in controlled gas atmospheres of SO2-CO2-CO-N2. The equilibrium gas compositions were such that: (1) FeS was stable with respect to FeO, (2) FeO...

    G. McAdam, D. J. Young in Oxidation of Metals (1992)

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