ANTI-FRETTING WEAR COATING FOR SUBSTRATES
    143.
    发明申请
    ANTI-FRETTING WEAR COATING FOR SUBSTRATES 有权
    抗磨损涂层用于基材

    公开(公告)号:US20130130014A1

    公开(公告)日:2013-05-23

    申请号:US13475616

    申请日:2012-05-18

    Abstract: A method and chemical composition and material structure for improving fretting wear in substrates, particularly carbon-carbon composite (CCC). The invention relates to trilayer coatings, comprising a base of hard ZrO2, a middle layer of Al2O3, and atop layer of lubricious ZnO. The coatings of the present invention exhibit conformality and pore-filling down to approximately 100 microns into a carbon-carbon composite to which they are applied. The methods for preparing the coatings include a chemical vapor infiltration route, such as an atomic layer deposition (ALD) process, to uniformly and conformally coat the porous and open structure of CCC with a solid lubricant trilayer of ZnO/Al2O3/ZrO2 that results in significant improvement (65%) in fretting wear.

    Abstract translation: 一种用于改善基材,特别是碳 - 碳复合材料(CCC)中的微动磨损的方法和化学组成和材料结构。 本发明涉及三层涂层,其包括硬的ZrO 2的基体,Al 2 O 3的中间层,和ZnO的顶层。 本发明的涂层对于它们所应用的碳 - 碳复合材料显示出约100微米的共形和孔隙填充。 制备涂层的方法包括化学气相渗透途径,例如原子层沉积(ALD)工艺,以均匀和保形的方式用ZnO / Al 2 O 3 / ZrO 2的固体润滑剂三层膜覆盖CCC的多孔和开放结构,从而导致 轻微磨损显着改善(65%)。

    Nanocomposite coating for hot metal forming tools
    145.
    发明授权
    Nanocomposite coating for hot metal forming tools 有权
    用于热金属成型工具的纳米复合涂层

    公开(公告)号:US08297091B2

    公开(公告)日:2012-10-30

    申请号:US12477180

    申请日:2009-06-03

    Abstract: In one embodiment, a substrate, for example a tool used in hot metalforming operations, is coated with an enamel nanoparticulate graded coating. The nanoparticles in the coating may be boron nitride nanoparticles. The coating may include a first portion adjacent a surface of the substrate, and a second portion adjacent the first portion. The first portion of the coating may have a lower volume fraction of nanoparticles than the second portion. The first portion has excellent adhesion to the surface of the substrate, and the second portion reduces friction and wear. The coated tool may be formed by applying at least one layer of a coating mixture to a surface of the tool and heating the coating mixture. A metal workpiece may be formed into an article by contacting the metal workpiece against the coated surface of the tool.

    Abstract translation: 在一个实施例中,衬底,例如用于热金属成形操作中的工具,涂覆有搪瓷纳米颗粒分级涂层。 涂层中的纳米颗粒可以是氮化硼纳米颗粒。 涂层可以包括邻近衬底的表面的第一部分和与第一部分相邻的第二部分。 涂层的第一部分可以具有比第二部分更低体积分数的纳米颗粒。 第一部分对基材的表面具有优异的粘附性,第二部分减少摩擦和磨损。 涂覆的工具可以通过将至少一层涂层混合物施加到工具的表面并加热涂层混合物而形成。 金属工件可以通过使金属工件与工具的涂覆表面接触而形成制品。

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