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    MULTIFUNCTIONAL ANODIZED LAYER
    5.
    发明申请
    MULTIFUNCTIONAL ANODIZED LAYER 审中-公开
    多功能阳极化层

    公开(公告)号：US20160017510A1

    公开(公告)日：2016-01-21

    申请号：US14792913

    申请日：2015-07-07

    Applicant: United Technologies Corporation

    Inventor： Mark R. Jaworowski ,  Xia Tang ,  Zhongfen Ding

    IPC: C25D11/12 ,  C25D11/24

    CPC classification number: C25D11/12 ,  C25D11/08 ,  C25D11/10 ,  C25D11/246

    Abstract: A method of anodizing includes immersing an aluminum alloy workpiece in a phosphoric acid anodizing solution and applying a voltage to form a porous oxide layer on the workpiece. The workpiece is then removed from the phosphoric acid anodizing solution and immersed in a controlled anodizing solution. A voltage is applied to form a dense oxide layer under the porous oxide layer. Dissolution of the porous oxide layer is controlled during the formation of the dense oxide layer by using tartaric acid in the controlled acid solution such that the thickness of the porous oxide layer is substantially equivalent before and after the formation of the dense oxide layer. The duplex anodized layer can be further sealed by soaking in a sealing solution to protect the porous oxide layer from hydrolytic decomposition, to improve corrosion protection, and to enhance the bonding with other structural components through adhesives.

    Abstract translation: 阳极氧化的方法包括将铝合金工件浸入磷酸阳极氧化溶液中并施加电压以在工件上形成多孔氧化物层。 然后将工件从磷酸阳极氧化溶液中取出并浸入受控阳极氧化溶液中。 施加电压以在多孔氧化物层下形成致密氧化物层。 通过在控制的酸溶液中使用酒石酸，在形成致密氧化物层的过程中控制多孔氧化物层的溶解，使得多孔氧化物层的厚度在形成致密氧化物层之前和之后基本相同。 双面阳极氧化层可以通过浸泡在密封溶液中进一步密封，以保护多孔氧化物层免于水解分解，改善腐蚀保护，并通过粘合剂增强与其它结构组分的粘结。

    Turbine blade internal hot corrosion oxide cleaning
    6.
    发明授权
    Turbine blade internal hot corrosion oxide cleaning 有权

    公开(公告)号：US11136674B2

    公开(公告)日：2021-10-05

    申请号：US16229526

    申请日：2018-12-21

    Applicant: United Technologies Corporation

    Inventor： Zhongfen Ding ,  William J. Brindley

    IPC: B08B7/00 ,  C23F1/16 ,  C23F1/44 ,  C23G5/00 ,  F01D25/00 ,  F01D5/00 ,  F01D5/28

    Abstract: A material removal method comprises receiving a component that includes a component body and a coating on the component body, the component body comprising metallic first material, and the coating comprising a second material that is different from the first material, wherein the component is a component of an item of rotational equipment. The method also includes receiving a solution comprising nitric acid and hydrogen peroxide and subjecting at least a portion of the coating to the solution in supercritical condition in order to remove at least some of the second material from the component, wherein a chemistry of the solution is selected such that the solution is substantially non-reactive with the first material.

    Method of detecting galvanic insulation integrity
    9.
    发明授权
    Method of detecting galvanic insulation integrity 有权

    公开(公告)号：US10359383B2

    公开(公告)日：2019-07-23

    申请号：US15174092

    申请日：2016-06-06

    Applicant: United Technologies Corporation

    Inventor： Zhongfen Ding ,  Mark R. Jaworowski

    IPC: G01R31/36 ,  G01N27/14 ,  G01N17/02

    Abstract: A method of assessing galvanic electronic isolation of two components at a joint of the two components includes measuring a first electrical resistance at a first condition across a joint of two components and comparing the first electrical resistance to a threshold resistance. The comparison of the first electrical resistance to the threshold resistance is indicative of a degree of electrical isolation of the two components. A second electrical resistance is measured at a second condition and the second electrical resistance is compared to the first electrical resistance. The result of the comparison of the second electrical resistance to the first electrical resistance is indicative of a type of electrical connection between the two components.

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