OXIDATION RESISTANT FERRITIC STAINLESS STEELS
    95.
    发明申请
    OXIDATION RESISTANT FERRITIC STAINLESS STEELS 审中-公开
    耐氧化铁不锈钢

    公开(公告)号:US20130309125A1

    公开(公告)日:2013-11-21

    申请号:US13951500

    申请日:2013-07-26

    Abstract: A method for making a ferritic stainless steel article having an oxidation resistant surface includes providing a ferritic stainless steel comprising aluminum, at least one rare earth metal and 16 to less than 30 weight percent chromium, wherein the total weight of rare earth metals is greater than 0.02 weight percent. At least one surface of the ferritic stainless steel is modified so that, when subjected to an oxidizing atmosphere at high temperature, the modified surface develops an electrically conductive, aluminum-rich, oxidation resistant oxide scale comprising chromium and iron and a having a hematite structure differing from Fe2O3, alpha Cr2O3 and alpha Al2O3. The modified surface may be provided, for example, by electrochemically modifying the surface, such as by electropolishing the surface.

    Abstract translation: 一种制造具有抗氧化表面的铁素体不锈钢制品的方法包括提供包含铝,至少一种稀土金属和16至小于30重量%的铬的铁素体不锈钢,其中稀土金属的总重量大于 0.02重量%。 铁素体不锈钢的至少一个表面被改性,使得当在高温下经受氧化气氛时,改性表面形成包含铬和铁并且具有赤铁矿结构的导电的,富铝的抗氧化氧化皮 不同于Fe2O3,αCr2O3和αAl2O3。 改性表面可以例如通过电化学改性表面来提供,例如通过电解抛光表面。

    PIEZOELECTRIC ELEMENT
    96.
    发明申请
    PIEZOELECTRIC ELEMENT 有权
    压电元件

    公开(公告)号:US20130285512A1

    公开(公告)日:2013-10-31

    申请号:US13979115

    申请日:2012-02-09

    Abstract: A piezoelectric element includes a metal substrate, an alumina layer, a lower electrode, a piezoelectric layer, and an upper electrode. The metal substrate includes iron as a main component and includes at least aluminum and chromium. The alumina layer is formed on the metal substrate, and the lower electrode is formed on the alumina layer. The piezoelectric layer is formed on the lower electrode, and the upper electrode is formed on the piezoelectric layer. The alumina layer is mainly formed of particles in a γ-alumina phase.

    Abstract translation: 压电元件包括​​金属基板,氧化铝层,下电极,压电层和上电极。 金属基材包括铁作为主要成分,并且至少包括铝和铬。 在金属基板上形成氧化铝层,在氧化铝层上形成下部电极。 压电层形成在下电极上,上电极形成在压电层上。 氧化铝层主要由γ-氧化铝相中的颗粒形成。

    STEAM TURBINE MEMBER
    97.
    发明申请
    STEAM TURBINE MEMBER 审中-公开
    蒸汽涡轮机会员

    公开(公告)号:US20120308772A1

    公开(公告)日:2012-12-06

    申请号:US13577757

    申请日:2011-02-17

    Abstract: An object is to provide a steam turbine member having excellent oxidation resistance at low cost without using an alloy coating such as a thermally sprayed or sintered body. The steam turbine member includes a substrate made of stainless steel containing Fe as a main component, 8 to 15 wt % of Cr, and 0.1 to 1.0 wt % of Mn. The steam turbine member has, on a surface of the substrate, an oxide film made of an oxide of a constituent element of the substrate. It is preferable that the oxide film thickness is 1 μm or less. It is also preferable that the oxide film has a surface roughness Ra of 1.6 a or less.

    Abstract translation: 本发明的目的是提供一种在不使用诸如热喷涂或烧结体的合金涂层的情况下以低成本具有优异的耐氧化性的汽轮机构件。 蒸汽轮机构件包括由不锈钢制成的基材,其含有Fe作为主要成分,8〜15重量%的Cr和0.1〜1.0重量%的Mn。 蒸汽轮机构件在基板的表面上具有由基板的构成元件的氧化物构成的氧化膜。 氧化膜厚度优选为1μm以下。 另外,优选氧化膜的表面粗糙度Ra为1.6μm以下。

    Method for producing and oxide layer on metallic elements
    98.
    发明授权
    Method for producing and oxide layer on metallic elements 有权
    金属元件上生产和氧化层的方法

    公开(公告)号:US07115174B2

    公开(公告)日:2006-10-03

    申请号:US10489987

    申请日:2002-11-30

    CPC classification number: C23C8/18 C23C8/34

    Abstract: In a known method for producing an oxide layer on metal parts, the metal parts are heat-treated in a treatment chamber during a carburization phase at temperatures below 1100° C. [2012° F.] in an atmosphere containing carbon monoxide and hydrogen and then, during an oxidation phase, they are oxidized at an oxidation temperature in the range from 750° C. to 950° C. [1382° F. to 1742° F.] in an atmosphere where a PH2O-to-PH2 ratio between 0.3 and 10 has been established by feeding an oxidant into the treatment chamber, a process in which an oxide layer is formed, whereby the oxygen partial pressure is determined by means of an oxygen probe and regulated at least during the oxidation phase. In order to improve the known method in terms of the reproducibility of the formation of corrosion-resistant coatings that cover and adhere well on metal parts containing iron and so as to improve the cost effectiveness of the process, it is proposed according to the invention that the oxygen partial pressure be regulated in such a way that the oxygen probe indicates a probe voltage in the range from 890 mV to 940 mV.

    Abstract translation: 在用于在金属部件上生产氧化物层的已知方法中,在含有一氧化碳和氢气的气氛中,在低于1100℃的温度下,在渗碳阶段期间,在处理室中对金属部件进行热处理[2012.F],以及 然后,在氧化阶段,它们在750℃至950℃的温度范围内氧化。在13℃至1742°F的气氛中,其中PH 2 < 已经通过将氧化剂供给到处理室来建立0.3至10之间的“0”至“0”至“2”的比例,其中形成氧化物层的过程由此氧分压由 至少在氧化阶段调节氧探针的手段。 为了改进已知的方法,在形成耐腐蚀涂层的再现性方面,覆盖和粘附在含有铁的金属部件上,并且为了提高该方法的成本效益,根据本发明提出 氧分压被调节为使得氧探针表示探针电压在890mV至940mV的范围内。

    Passivation of steel surface to reduce coke formation
    99.
    发明授权
    Passivation of steel surface to reduce coke formation 有权
    钝化钢表面以减少焦炭的形成

    公开(公告)号:US07056399B2

    公开(公告)日:2006-06-06

    申请号:US10425544

    申请日:2003-04-29

    Abstract: The present invention provides a process to treat steels, preferably carbon steel to reduce the tendency of the steel to form coke when in contact with hydrocarbons at elevated temperatures. The steel may be first reduced then treated with a mixture of compounds which further modify the reduced surface and finally the treated steel surface is cured. The treated steel has a reduced propensity to form coke when in contact with hydrocarbons particularly at higher temperatures.

    Abstract translation: 本发明提供了一种处理钢,优选碳钢的方法,以降低在高温下与烃接触时钢形成焦炭的倾向。 可以先将钢还原,然后用进一步改性还原表面的化合物混合物处理,最后处理的钢表面固化。 当与烃接触时,经处理的钢具有降低的焦炭形成倾向,特别是在较高温度下。

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