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    Oxidation Resistant Nanocrystalline MCrAl(Y) Coatings And Methods of Forming Such Coatings
    2.
    发明申请
    Oxidation Resistant Nanocrystalline MCrAl(Y) Coatings And Methods of Forming Such Coatings 有权
    耐氧化纳米晶MCrAl（Y）涂层和形成这种涂层的方法

    公开(公告)号：US20110256417A1

    公开(公告)日：2011-10-20

    申请号：US12760864

    申请日：2010-04-15

    申请人： Narayana S. CHERUVU ,  Ronghua WEI

    发明人： Narayana S. CHERUVU ,  Ronghua WEI

    IPC分类号： C23C14/14 ,  B22F5/00 ,  C22C30/00 ,  H05H1/24 ,  B05D1/36

    CPC分类号： C23C14/165 ,  C22C19/05 ,  C22C19/07 ,  C22C30/00 ,  C22C38/00 ,  C23C14/345 ,  C23C14/354 ,  Y10T428/12014 ,  Y10T428/12576

    摘要： The present disclosure relates to an oxidation resistant nanocrystalline coating and a method of forming an oxidation resistant nanocrystalline coating. An oxidation resistant coating comprising an MCrAl(Y) alloy may be deposited on a substrate, wherein M, includes iron, nickel, cobalt, or combinations thereof present greater than 50 wt % of the MCrAl(Y) alloy, chromium is present in the range of 15 wt % to 30 wt % of the MCrAl(Y) alloy, aluminum is present in the range of 6 wt % to 12 wt % of the MCrAl(Y) alloy and yttrium, is optionally present in the range of 0.1 wt % to 0.5 wt % of the MCrAl(Y) alloy. In addition, the coating may exhibit a grain size of 200 nm or less as deposited.

    摘要翻译： 本公开内容涉及抗氧化纳米晶体涂层和形成耐氧化纳米晶体涂层的方法。 包含MCrAl（Y）合金的抗氧化涂层可以沉积在基底上，其中M包括大于MCrAl（Y）合金的50重量％的铁，镍，钴或其组合，铬存在于 范围为MCrAl（Y）合金的15重量％〜30重量％，铝以MCrAl（Y）合金和钇的6重量％〜12重量％的范围存在，任选以0.1重量％ ％至0.5wt％的MCrAl（Y）合金。 此外，涂层可以表现出沉积的200nm或更小的晶粒尺寸。

    Oxidation resistant nanocrystalline MCrAl(Y) coatings and methods of forming such coatings
    5.
    发明授权
    Oxidation resistant nanocrystalline MCrAl(Y) coatings and methods of forming such coatings 有权
    耐氧化纳米晶MCrAl（Y）涂层和形成这种涂层的方法

    公开(公告)号：US08790791B2

    公开(公告)日：2014-07-29

    申请号：US12760864

    申请日：2010-04-15

    申请人： Narayana S. Cheruvu ,  Ronghua Wei

    发明人： Narayana S. Cheruvu ,  Ronghua Wei

    IPC分类号： B32B15/04 ,  C23C14/18 ,  C23C14/35 ,  C23C14/16 ,  C22C19/07 ,  C22C38/00 ,  C22C30/00 ,  C22C19/05 ,  C23C14/34

    CPC分类号： C23C14/165 ,  C22C19/05 ,  C22C19/07 ,  C22C30/00 ,  C22C38/00 ,  C23C14/345 ,  C23C14/354 ,  Y10T428/12014 ,  Y10T428/12576

    摘要： The present disclosure relates to an oxidation resistant nanocrystalline coating and a method of forming an oxidation resistant nanocrystalline coating. An oxidation resistant coating comprising an MCrAl(Y) alloy may be deposited on a substrate, wherein M, includes iron, nickel, cobalt, or combinations thereof present greater than 50 wt % of the MCrAl(Y) alloy, chromium is present in the range of 15 wt % to 30 wt % of the MCrAl(Y) alloy, aluminum is present in the range of 6 wt % to 12 wt % of the MCrAl(Y) alloy and yttrium, is optionally present in the range of 0.1 wt % to 0.5 wt % of the MCrAl(Y) alloy. In addition, the coating may exhibit a grain size of 200 nm or less as deposited.

    摘要翻译： 本公开内容涉及抗氧化纳米晶体涂层和形成耐氧化纳米晶体涂层的方法。 包含MCrAl（Y）合金的抗氧化涂层可以沉积在基底上，其中M包括大于MCrAl（Y）合金的50重量％的铁，镍，钴或其组合，铬存在于 范围为MCrAl（Y）合金的15重量％〜30重量％，铝以MCrAl（Y）合金和钇的6重量％〜12重量％的范围存在，任选以0.1重量％ ％至0.5wt％的MCrAl（Y）合金。 此外，涂层可以表现出沉积的200nm或更小的晶粒尺寸。

    SYSTEM AND METHOD FOR DEPOSITING COATINGS ON INNER SURFACE OF TUBULAR STRUCTURE
    6.
    发明申请
    SYSTEM AND METHOD FOR DEPOSITING COATINGS ON INNER SURFACE OF TUBULAR STRUCTURE 审中-公开
    用于在管状结构的内表面沉积涂层的系统和方法

    公开(公告)号：US20110111132A1

    公开(公告)日：2011-05-12

    申请号：US12939248

    申请日：2010-11-04

    申请人： Ronghua Wei ,  Christopher Rincon ,  Edward Langa ,  Narayana S. Cheruvu

    发明人： Ronghua Wei ,  Christopher Rincon ,  Edward Langa ,  Narayana S. Cheruvu

    IPC分类号： C23C14/02 ,  B29C71/04

    CPC分类号： C23C16/045 ,  C23C16/26 ,  H01J37/32596

    摘要： A system and method for depositing coatings on an inner surface of a tubular structure includes at least one pump for creating and maintaining a vacuum in the tubular structure, a meshed electrode adapted to be positioned in a center of the tubular structure, and a biased voltage power supply connected to the meshed electrode. The biased voltage power supply is adapted to apply a negative voltage to the meshed electrode such that the negative voltage causes a hollow cathode discharge inside the meshed electrode. The creation of the hollow cathode discharge causes ions to be drawn out of a mesh on the meshed electrode and accelerate onto an inner surface of the tubular structure, thereby coating the inner surface with a desired coating.

    摘要翻译： 用于在管状结构的内表面上沉积涂层的系统和方法包括至少一个用于在管状结构中产生和保持真空的泵，适于定位在管状结构的中心的网状电极和偏置电压 电源连接到网状电极。 偏置电压电源适于向网状电极施加负电压，使得负电压在网状电极内部引起空心阴极放电。 空心阴极放电的产生导致离子从网状电极上的网状物拉出并加速到管状结构的内表面上，从而以期望的涂层涂覆内表面。

    Hardfacing technique and improved construction for inlet steam sealing surfaces of steam turbines
    7.
    发明授权
    Hardfacing technique and improved construction for inlet steam sealing surfaces of steam turbines 失效
    蒸汽轮机入口蒸汽密封面的表面处理技术和改进的结构

    公开(公告)号：US4850794A

    公开(公告)日：1989-07-25

    申请号：US85583

    申请日：1987-08-14

    申请人： Samuel D. Reynolds, Jr. ,  Narayana S. Cheruvu

    发明人： Samuel D. Reynolds, Jr. ,  Narayana S. Cheruvu

    IPC分类号： F01D9/06

    CPC分类号： F01D9/06

    摘要： An improved steam turbine system is provided having a hardfacing disposed on a portion of its steam inlet chamber wear surfaces. The invention also includes a novel stacked ring design having a hardfaced inlet sleeve and stationary, nitride sealing rings for minimizing wear. Also included are novel heat treatments and metallurgical processes for stress relieving these hardfaced components. The techniques and designs employed, decrease steam leakage and assure longer service life for steam powered turbines.

    摘要翻译： 提供了一种改进的蒸汽轮机系统，其具有设置在其蒸汽入口室磨损表面的一部分上的硬化面。 本发明还包括一种新颖的堆叠环设计，其具有硬表面的入口套筒和用于最小化磨损的固定的氮化物密封环。 还包括新的热处理和冶金工艺，以减轻这些表面硬化的部件。 采用的技术和设计，减少蒸汽泄漏，并确保蒸汽动力涡轮机的使用寿命更长。