CHROMIUN-ENRICHED OXIDE CONTAINING MATERIAL AND PREOXIDATION METHOD OF MAKING THE SAME TO MITIGATE CORROSION AND FOULING ASSOCIATED WITH HEAT TRANSFER COMPONENTS
    2.
    发明申请
    CHROMIUN-ENRICHED OXIDE CONTAINING MATERIAL AND PREOXIDATION METHOD OF MAKING THE SAME TO MITIGATE CORROSION AND FOULING ASSOCIATED WITH HEAT TRANSFER COMPONENTS 失效
    含氧化烯的含氧材料及其制备方法,以减少与热转印组分有关的腐蚀和蒸发

    公开(公告)号:US20110277888A1

    公开(公告)日:2011-11-17

    申请号:US13193223

    申请日:2011-07-28

    IPC分类号: C23C28/00

    摘要: A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance for a heat transfer component is disclosed. The heat transfer component includes a heat exchange surface formed from a chromium-enriched oxide containing material formed from the composition δ, ε, and ζ, wherein ζ is a steel containing at least about 5 to about 40 wt. % chromium, ε is a chromium enriched oxide (M3O4 or M2O3 or mixtures thereof) formed on the surface of the steel ζ, wherein M is a metal containing at least 5 wt. % Cr based on the total weight of the metal M, and δ is a top layer formed on the surface of the chromium-enriched oxide ε, comprising sulfide, oxide, oxysulfide, and mixtures thereof. The top layer δ comprises iron sulfide (Fe1-xS), iron oxide (Fe3O4), iron oxysulfide, iron-chromium sulfide, iron-chromium oxide, iron-chromium oxysulfide, and mixtures thereof. The metal M of the chromium enriched oxide (M3O4 or M2O3 or mixtures thereof) may comprise Fe, Cr, and constituting elements of the steel ζ. The steel ζ may be selected from low chromium steels, ferritic stainless steels, martensitic stainless steels, austenitic stainless steels, duplex stainless steels and precipitation-hardenable alloys.

    摘要翻译: 公开了一种提供耐热性和耐腐蚀性的传热部件的耐污性的方法。 传热组分包括由组合物δ,&egr和ζ形成的含铬富氧材料形成的热交换表面,其中ζ是含有至少约5至约40重量% %铬, 是在钢ζ的表面上形成的富含铬的氧化物(M3O4或M2O3或其混合物),其中M是含有至少5wt。 %Cr,基于金属M的总重量,δ是在富含铬的氧化物的表面上形成的顶层,其包含硫化物,氧化物,硫氧化物及其混合物。 顶层δ包括硫化铁(Fe1-xS),氧化铁(Fe3O4),硫氧化铁,铁 - 硫化铬,铁 - 铬氧化物,铁 - 硫氧化铬及其混合物。 富含铬的氧化物(M3O4或M2O3或其混合物)的金属M可以包含Fe,Cr和构成元素的ζ。 钢ζ可以选自低铬钢,铁素体不锈钢,马氏体不锈钢,奥氏体不锈钢,双相不锈钢和沉淀硬化合金。

    Stabilized Ceramic Composition, Apparatus and Methods of Using the Same
    3.
    发明申请
    Stabilized Ceramic Composition, Apparatus and Methods of Using the Same 有权
    稳定的陶瓷组合物,使用它的装置和方法

    公开(公告)号:US20130231238A1

    公开(公告)日:2013-09-05

    申请号:US13769620

    申请日:2013-02-18

    IPC分类号: C04B38/00 C10G9/28

    摘要: In one aspect, the invention includes a refractory material, said material comprising: (i) at least 20 wt. % of a first grain mode stabilized zirconia based upon the total weight of said material, said first grain mode having a D50 grain size in the range of from 5 to 2000 μm, said stabilized zirconia including a matrix oxide stabilizer; (ii) at least 1 wt. % of a second grain mode having a D50 grain size in the range of from 0.01 μm up to not greater than one-fourth the D50 grain size of said first grain mode zirconia, based upon the total weight of said material; and (iii) at least 1 wt. % of a preservative component within at least one of said first grain mode stabilized zirconia, said second grain mode stabilized zirconia, and an optional another grain mode; wherein after sintering, said material has porosity at 20° C. in the range of from 5 to 45 vol %.

    摘要翻译: 一方面,本发明包括耐火材料,所述材料包括:(i)至少20wt。 基于所述材料的总重量的第一晶粒模式稳定化氧化锆的%,所述第一晶粒模式具有在5至2000μm范围内的D50晶粒尺寸,所述稳定化氧化锆包括基质氧化物稳定剂; (ii)至少1wt。 基于所述材料的总重量,具有D50晶粒尺寸在0.01μm至至不超过所述第一晶粒模式氧化锆的D50晶粒尺寸的四分之一范围内的第二晶粒模式的%。 和(iii)至少1wt。 所述第一晶粒模式稳定化氧化锆,所述第二晶粒模式稳定化氧化锆和任选的另一晶粒模式中的至少一种中的防腐剂组分% 其中烧结后,所述材料在20℃下的孔隙率为5-45体积%。