CN108699668A - 非光滑表面上的改善热喷涂层 - Google Patents
非光滑表面上的改善热喷涂层 Download PDFInfo
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- CN108699668A CN108699668A CN201680081532.XA CN201680081532A CN108699668A CN 108699668 A CN108699668 A CN 108699668A CN 201680081532 A CN201680081532 A CN 201680081532A CN 108699668 A CN108699668 A CN 108699668A
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- Prior art keywords
- substrate
- area
- coating
- thermal spraying
- smooth surface
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/005—Rolls with a roughened or textured surface; Methods for making same
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C4/126—Detonation spraying
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C—CHEMISTRY; METALLURGY
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
本发明涉及非光滑表面上的热喷涂层和方法。所述涂层和方法可涂覆非光滑表面而不会大幅降解所述非光滑表面的基础表面纹理或轮廓,以便充分保留所述基础表面纹理或轮廓。用于涂层部分覆盖以保持所述表面轮廓同时保持耐磨性的能力在常规热喷方法中是前所未有的。
Description
技术领域
本发明涉及非光滑表面上的热喷涂层以形成用于各种应用的部分或完全涂覆表面,由此该涂层充分保留被涂覆表面的基础表面纹理,同时赋予必要的负载能力和耐磨性。
背景技术
许多涂覆基底表面需要涂层,以保持或不会显著降解基底表面的基础表面纹理或图案。应当理解,术语“纹理”、“表面纹理”和“图案”旨在具有与此处和全文所用的相同含义。如此处和全文所用,术语“基底”是指以某种无规或非无规表面图案或纹理化轮廓为特征的任何非光滑表面。基底包括任何合适类型的材料,包括金属表面和合金表面。
基底的一个示例为压花辊,其具有凹陷或凹槽构造和/或高凸的突起构造,以形成特定图案或表面纹理。基底的另一个示例是具有预定义表面纹理的工作辊。例如,可能需要用于金属或金属合金(例如,钢、钛、铜、黄铜和铝)且具有特定表面纹理的工作辊来生产轧制工件和其他产品。如此处和全文所用,“工件”和“产品”是作为轧制方法或最终应用的一部分(例如,热处理、退火等)涂覆基底可接触的任何类型材料的通用说法,包括例如带材、板材或其他轧制片材金属和其他片材产品。热轧机和冷轧机执行的纹理化工作辊具有特定优点,包括能够显著减小穿过工作辊的工件材料的厚度。
此外,工作辊表面纹理是所需的,因为其可起到将润滑剂夹带在原本为润滑剂耗尽的辊咬合处(由于与热轧相关的极端温度导致润滑剂耗尽)中的作用,这种润滑剂随后被排出到辊/板材界面,此时其作用是使由于辊表面和板材表面之间的粘附而导致的材料转移基本上最小化,并且使板材表面进入冷轧机架时其上的轧入碎屑和污迹最小化。
另外,要求用于生产钢板的大型冷轧机和平整机工作辊具有紧密限定的纹理化表面。然后在钢板穿过辊时,将这种纹理赋予钢板。在随后将钢板形成为一些所需的轮廓例如车体外壳时,其拥有的表面纹理最初在压制过程中所需的用油进行润滑时以及随后在对金属外壳进行喷漆时发挥着非常重要的作用。在本领域中已知的是,对于汽车工业以及其他应用而言,在对钢板进行压制加工时需要表面粗糙度和润滑度的某些特质。
已经采用了许多涂覆方法,但都未能产生合适的磨损寿命。一个示例就是如今普遍使用的硬铬镀层方法。然而,硬铬镀层方法的主要缺点是其使用六价铬。由于六价铬具有致癌性,根据《化学品注册、评估、授权和限制法规》(REACH),欧盟从2017年9月起禁止未经授权使用Cr(VI)化合物。
作为替代方案,已经探索了放电涂层(EDC),其能够形成基础表面的纹理,同时能够将涂层沉积到所形成的纹理上。EDC是一种表面合金化/涂覆方法,用于在金属基底上形成具有放电纹理化表面的硬质耐磨层。已经在放电纹理化过程中使用了生坯和/或烧结的金属碳化物电极,以通过表面合金化来改善辊的耐磨性。在EDC方法中,电流流过电极并且导致电介质在火花间隙中电离。在电离过程中,温度将超过8000K,此时电极和工件表面发生局部熔化和汽化,以形成涂覆的表面。结果往往显示沉积在工件表面上的碳化钨水平不合格,从而导致耐磨性较差。
另外,当前的其他涂覆方法一般不能保留非光滑表面的基础表面纹理或轮廓。如今,当将涂层施加到可例如通过纹理化、压花、雕刻、蚀刻或滚花产生的非光滑表面上时,非均匀表面由于被保护涂层覆盖而丧失。
鉴于当前涂覆方法的缺点,仍需要改进的涂层以及用于生产该涂层的方法,该方法能够以足以赋予保护耐磨性并且不会使非光滑表面的基础表面纹理或轮廓大幅降解的涂层含量涂覆非光滑基底表面,从而充分保留基础表面纹理或轮廓。
发明内容
在一个方面,一种部分热喷涂的基底包括适于与工件接触的外表面,所述外表面为非光滑的并且由基础纹理轮廓限定,所述外表面包括沿着外表面的第一区域的热喷涂层以产生热涂覆的第一区域,并且,并且所述外表面的其余部分的特征在于不存在沿着外表面的第二区域的热喷涂层以产生未涂覆的第二区域,其中与未涂覆区域的所述第二区域结合的外表面的所述第一区域基本上不改变或降解外表面的基础纹理轮廓,并且进一步地其中所述部分热喷涂的表面的特征在于不存在未热喷涂层。
在第二个方面,一种用于形成沿着基底的外表面的部分热喷涂的基底而基本上不改变基底的外表面的纹理轮廓的方法,包括以下步骤:提供具有外表面的基底,所述外表面如纹理轮廓所限定的那样为非光滑的;提供热喷装置;通过热喷装置送入粉末或线材原料,以产生至少一部分熔融粉末颗粒;旋转基底;在外表面的第一区域处冲击粉末颗粒,从而淬灭颗粒以产生热涂覆的第一区域;保持外表面的第二区域基本上不含熔融粉末颗粒,以产生未涂覆的第二区域。
在第三个方面,一种沿着非光滑表面延伸的热喷涂层包括:具有非光滑外表面的基底,该非光滑外表面的特征在于基础纹理轮廓具有如由轮廓仪测量的预定数的峰;热喷涂层,以不大于.0003英寸的厚度隐藏整个非光滑外表面,以产生热喷涂表面,并且进一步地其中基础纹理轮廓的结构完整性被充分保留;所述非光滑外表面,其特征在于不存在放电纹理化涂层、电镀涂层、氮化物涂层、渗碳涂层和镀铬涂层。
附图说明
图1a示出了根据本发明的一个方面的具有沿着热喷涂的第一区域的热喷涂层的基底的非光滑顶表面,由此沿着涂覆峰的局部表面纹理被破坏,并且顶表面的其余部分未被涂覆作为第二区域,使得整体表面纹理保持充分;
图1b示出了根据本发明的另一个方面的具有沿着热喷涂的第一区域的热喷涂层的基底的非光滑顶表面,由此沿着涂覆峰的局部表面纹理相对于图1a基本上在更大程度上被保留,并且顶表面的其余部分未被涂覆作为第二区域;
图1c示出了根据本发明的另一个方面的具有沿着热喷涂的第一区域的热喷涂层的基底的非光滑顶表面,并且顶表面的其余部分未被涂覆作为第二区域,以产生与图1a和图1b相比具有更大涂层无规性的所谓胡椒喷雾;
图2a示出了根据本发明的另一个方面的具有沿着热喷涂的第一区域的热喷涂层的基底的非光滑顶表面,并且顶表面的其余部分未被涂覆作为第二区域;
图2b示出了根据本发明的另一个方面的具有沿着热喷涂的第一区域的热喷涂层的基底的非光滑顶表面,由此沿着涂覆峰的局部表面纹理相对于图2a基本上在更大程度上被保留,并且顶表面的其余部分未被涂覆作为第二区域;以及
图3示出了以基本上保留基础表面纹理的方式覆盖整个非光滑表面的相对较薄的热喷涂层。
具体实施方式
本发明认识到,当将热喷涂层施加到可例如通过纹理化、压花、雕刻、蚀刻或滚花产生的非光滑表面上时,非均匀表面(即,表面纹理、轮廓或图案)的清晰度丧失或被传统热喷涂沉积物覆盖。本发明提供了一种新颖的解决方案,用于克服对非光滑表面的破坏,同时保持非光滑表面必要的耐磨性。
本发明的一个方面着重于热喷涂层以产生部分热喷涂表面,该部分热喷涂表面通常可产生所需的耐磨性和耐蚀性,同时基本上保持非光滑基底表面的所得基础纹理或图案。部分热喷涂表面的特征在于不存在非热喷涂层,诸如铬镀层、放电纹理化涂层、电镀涂层、氮化物涂层和渗碳涂层。如将描述的,本发明在一个方面形成了与未涂覆的第二区域结合的非光滑外表面的热喷涂的第一区域,该热喷涂的第一区域基本上不改变或降解外表面的基础纹理轮廓。
在一个实施方案中,并且如图1a所示,提供了部分热喷涂基底。可采用任何类型的需要保持非光滑表面的表面纹理或图案的基底。在一个优选的实施方案中,基底为工作辊,诸如可用于轧制金属合金(例如,钢或铝合金)或其他工件的方法中的工作辊。
图1a示出了工作辊的非光滑顶表面10。非光滑顶表面10整体被示为具有被定义为一系列峰和谷的代表性基础表面纹理。非光滑顶表面10的顶部被示为被表面纹理化为略呈缺口状或锯齿状的轮廓,例如工件在操作期间将接触该轮廓。为了简单起见,非光滑顶表面10未按比例绘制,并且特意省略了工作辊主体的其余部分。特意省略了工作辊的其他细节,以更好地阐明本发明的原理。峰被编号为1a-8a,相应的谷被编号为1b-8b。峰1a-8a中的每一个被示为具有相等的高度。但应当理解,本发明设想了峰和谷的任何构造以形成非光滑顶表面10。与当前的热喷方法相反,本发明仅在离散的多个涂覆区域11处用足够的涂层部分地涂覆非光滑表面10,以便保持非光滑表面10的整体表面轮廓,同时仍能够产生由涂覆区域11赋予的必要耐磨属性。具体地讲,沿着峰1a、3a和6a以及峰1a、3a和6a中每一个的两侧以不规则间隔(即,施加涂层的间距沿着非光滑顶表面10的表面轮廓变化)施加热喷涂区域11,以产生多个且离散的热喷涂的第一区域11。基底非光滑表面10的其余部分沿着峰2a、4a、5a以及在谷4b内、沿着峰7a、8a以及在谷7b内、沿着峰8a及其两侧以及在谷8b内保持未涂覆,以共同产生多个且离散的未涂覆的第二区域12。在所示的实施方案中,3/8的峰被涂覆。未涂覆的第二区域由峰2a、5a、5a、7a和8a限定,这些峰沿着非光滑表面10的相应峰的顶部和/或相应峰的两侧保持未涂覆。本发明认识到涂层可在一定程度上破坏涂覆区域1a、3a和6a的峰和谷轮廓,如可例如在涂层以不贴合峰特征时隐藏峰特征的方式沿着峰1a、3a和6a沉积时发生。例如,通过钝化峰特征来略微破坏或隐藏沿着涂覆峰1a、3a和6a的两侧的所示局部表面纹理,热喷涂的第一区域12可减轻效果或减小表面轮廓10。然而,部分涂层的这种减轻或钝化效果被未涂覆的第二区域12抵消,该第二区域具有结构上保持完整的表面纹理10。因此,整体表面纹理可足以用于特定最终应用,同时仍能够获得工作辊应用所需的热喷涂的第一区域11必要的耐磨性。以这种方式,本发明认识到可容忍一定水平的表面纹理破坏。
部分涂覆的基底可通过峰计数来定量,峰计数被定义为通过市售的轮廓仪诸如Mahr(MarSurf)M2单元检测和测量到的每单位长度的峰数。本示例中沿着热喷涂区域11的峰计数可以是不低于未涂覆区域12的峰计数的约80%、优选不低于未涂覆区域12的峰计数的约70%、更优选不低于未涂覆区域12的峰计数的约60%的数值。应当理解,其他实施方案可至少部分地基于最终应用表现出相似或不同的峰计数。
作为另外一种选择,如图1b所示,可产生热喷涂的第一区域11’,以便更精确地贴合其所沉积的峰,使得涂层以保持峰1a、3a和6a的完整性的方式施加,从而相对于图1a所示的表面纹理基本上在更大程度上保留沿着热喷涂的第一区域11’的表面纹理10。例如,使用被充分雾化成亚微米颗粒的纳米级热喷颗粒或熔融颗粒可以减缩厚度(例如,在一个示例中,不大于0.0003英寸、优选不大于0.03英寸、更优选不大于0.0003英寸)且以基本上单层覆盖的方式沉积在峰1a、3a和6a上,从而与由图1a的涂层覆盖可能产生的破坏量相比,保留或最小程度地破坏沿着这些被覆盖的峰1a、3a和6a的非光滑表面10的局部表面纹理。因此,部分涂覆的基底的整体表面纹理相对于图1a所示的整体表面纹理在更大程度上保持基本不变,图1a所示的整体表面纹理可能有丧失源于非光滑表面10的基础图案的趋势。换句话讲,与检测和测量到的图1a的区域11的峰计数相比,图1b的热涂覆的第一区域11’的峰计数表现出较少的可检测和可测量减少。以这种方式,本发明可使热喷涂层赋予非光滑表面10的基础表面纹理的破坏最小化。当特定应用需要部分涂层覆盖以在对非光滑表面10的破坏最小的情况下承受高度负载的环境时,图1b可能是有利的。
在图1c所示的另一个实施方案中,并且作为图1a的延伸,增加了热喷涂的第一区域11”的无规性,使得只有对特定峰和谷的部分进行了涂覆。该效果是所谓的“胡椒喷雾”效果,旨在使涂层覆盖最小化而不破坏非光滑表面10的整体表面纹理。图1c中的非光滑顶表面10的整体峰计数大于图1a和图1b的整体峰计数,从而保持整体较高量的表面纹理。在需要显著的图案或纹理的一些应用中,胡椒喷雾涂层构造可能是足够的,并且由较低量的涂层赋予的耐磨性和负载能力就足够了。在需要对非光滑顶表面10造成一定水平(优选最低水平)的破坏以获得所需的工作辊耐磨性和负载能力的其他应用中,可能需要图1a和/或图1b的涂层构造。当特定应用需要部分涂层覆盖以承受负载环境但仍保持非光滑表面10的基础表面纹理时,图1c可能是有利的。在一个可供选择的实施方案中,由不同尺寸、形状和厚度的无规状涂层颗粒限定的图1c的胡椒喷雾涂层构造可在整个表面上形成,由此无规状取向中的离散涂层颗粒沿着基底的整个表面沉积。最终结果是没有谷或峰裸露在外。
图2a示出了另一个实施方案。非光滑顶表面20被示为具有被定义为一系列峰和谷的代表性基础表面纹理。峰被编号为21a-28a,相应的谷被编号为21b-28b。与图1a不同,以规则间隔(即,沿着非光滑表面20的相邻被涂覆部分到未涂覆部分之间的间距相等)将热喷涂层11施加在谷21b、23b、25b和27b内,以产生多个且离散的热喷涂的第一区域31。基底非光滑表面20的其余部分在谷22b、24b和26b内保持未涂覆,以共同产生多个且离散的未涂覆的第二区域32。在所示的实施方案中,总共16条所谓的“腿”,其中8条腿被涂覆,而8条腿未涂覆,从而使得腿的涂层覆盖率为大约50%。因此,热喷涂的第一区域31在非光滑表面20上占约50%的腿覆盖率。未涂覆的第二区域32占非光滑表面的约50%。
在本文所述的实施方案中,本发明认识到涂层可在一定程度上破坏涂覆区域的峰和谷轮廓。例如,图1a中的热喷涂的第一区域31可至少部分地隐藏非光滑表面20的涂层沉积处的基础表面轮廓的特征。然而,部分涂层对表面纹理的这种破坏可通过未涂覆的第二区域32来抵消,该第二区域具有局部表面纹理,在施加涂层之后,该局部表面纹理在结构上保持完整。因此,类似于图1a,图2a中的非光滑表面20的整体表面纹理可足以用于特定最终应用,同时仍能够获得特定应用诸如工作辊应用所需的经热喷涂的第一区域31必要的耐磨性。
作为另外一种选择,根据本发明的另一个方面,图2b示出了具有沿着热喷涂的第一区域31’的热喷涂层的基底的非光滑顶表面20,由此沿着涂覆峰的局部表面纹理基本上被保留,并且顶表面的其余部分未被涂覆作为第二区域32。与图2a相比,可产生热喷涂的第一区域31’,以便更精确地贴合其所沉积的峰,使得涂层以保持谷21b、23b、25b和27b内的完整性的方式施加,从而相对于图2a所示的表面纹理基本上在更大程度上保留沿着第一涂覆区域31’的表面纹理。例如,使用被充分雾化成亚微米颗粒的纳米级热喷颗粒或熔融颗粒可以减缩厚度(例如,在一个实例中,不大于0.0003英寸)且以基本上单层覆盖的方式沉积在整个表面上,从而最小程度地破坏非光滑表面20的表面纹理。因此,部分涂覆的基底的整体表面纹理保持基本不变。换句话讲,与热喷涂的第一区域31的峰计数相比,热喷涂的第一区域31’的峰计数可表现出较小的可检测减少。也可采用其他合适的技术来形成图2b的涂层构造。当特定应用需要部分涂层覆盖以承受高度负载的环境时,图2b可能是有利的。
尽管热喷第一涂覆区域在图1a、1b、1c、2a和2b中被示为多个且离散的区域,但应当理解,本发明设想了以连续方式沿着非光滑表面的外表面延伸以形成单个且连续的热喷涂部分的热涂覆的第一区域。
在另一个实施方案中,图3示出了完全涂覆的基底。非光滑表面40被热喷涂层(优选纳米级涂层)完全涂覆。涂覆过程以贴合非光滑表面40的表面纹理的方式进行。优选地,厚度不大于0.0015英寸,并且更优选地为0.0003英寸。涂层结构的特征优选地在于基本上不存在重叠的薄片。当特定应用需要最大涂层覆盖以产生耐磨性和耐蚀性时,图3可能是有利的。
如在各种实施方案中所述,本发明形成了与未涂覆的第二区域结合的非光滑外表面的热喷涂的第一区域,该热喷涂的第一区域基本上不改变或降解外表面的基础纹理轮廓。图1a、图1c和图2a使热喷涂层赋予非光滑表面10的基础表面纹理的破坏最小化,而图1b和图2b可保留涂覆区域的基础表面纹理,并且图3可实现100%的涂层覆盖率而不会降解基础表面纹理。确切的涂层覆盖率可至少部分地根据热喷方法、粒度、热喷粉末或线材进料、基底的最终应用和基底的几何形状而变化。在一个示例中,热喷涂的第一区域构成基于非光滑表面的总表面积的10%-90%;优选基于非光滑表面的总表面的25%-70%;并且更优选基于非光滑表面的总表面的40%-60%的部分覆盖率。
此外,本发明的涂层可相对于Ra来表示,Ra被定义为非光滑表面的峰和谷的一组单独测量值的平均值。例如,热喷涂的第一区域可具有所述未涂覆的第二区域的约50%-80%的表面粗糙度Ra。Ra以及峰计数可用于确定基础纹理轮廓已被热喷涂层改变(即,已减少或降解)的量。在一个示例中,沿着热喷涂的第一区域的外表面的基础纹理轮廓被改变不超过基于非光滑表面的总表面积的105%-90%,优选不超过基于非光滑表面的总表面积的20%-50%。
可采用任何合适的热喷方法,包括高速氧燃料(HVOF)、爆炸喷涂、冷喷涂、火焰喷涂、线材喷涂和等离子方法。可使用的进料材料的示例包括各种形式(包括粉末)的含钨碳化物、钴和含钴合金、镍和含镍合金。热喷涂过程通常涉及使粉末或线材原料流过热喷装置,该热喷装置将粉末加热和/或加速到辊基部(基底)上。经过压紧之后,经加热和/或加速的颗粒变形,得到热喷薄片或薄板。重叠的薄板构成涂层结构。可用于本发明的爆炸方法在美国专利No.2,714,563中公开,该专利的公开内容以引用方式并入本文。爆炸方法在美国专利No.4,519,840和No.4,626,476中进一步公开,包括含钨、碳化物、钴和铬的组合物的涂层,上述专利的公开内容以引用方式并入本文。美国专利No.6,503,290公开了可用于本发明的高速氧燃料方法以涂覆含W、C、Co和Cr的组合物,该专利的公开内容以引用方式并入本文。
在涂层形成步骤中,将热喷粉末热喷到非光滑表面的表面上,因此在非光滑表面的表面上形成热喷涂层。高速氧气燃料或爆炸喷涂是对热喷粉末进行热喷的优选方法。但是,设想了其他涂层形成方法,并且包括等离子喷涂;冷喷涂;等离子转移弧(PTA);火焰喷涂;激光熔覆;热喷涂/激光熔;PVD;CVD。
为了实现在非光滑表面上进行部分涂层覆盖,以可低于常规热喷方法的进料速率将粉末或线材原料送入热喷装置中。在一个示例中,以5克/分钟至120克/分钟的进料速率通过热喷装置送入粉末,并且基底以900转/分至3600转/分钟旋转。设想了其他进料速率和rpm,并且可根据所得涂层覆盖率、涂层材料、涂层组合物和特定最终应用来选择这些进料速率和rpm。此外,可允许粉末进料速率在涂覆操作期间变化。当粉末进料速率降低时,基底旋转速度(rpm)相对于常规热喷方法增加,从而进一步降低粉末喷涂颗粒在工件辊表面上的密度。在一些实施方案中,可采用利用亚微米或纳米级颗粒的高级热喷方法。另外,可改进热喷方法以获得单层覆盖,以便保持特定表面轮廓的峰和谷特征,从而降低接触工件的颗粒量而不会不必要地浪费材料。
虽然已经示出和描述了被认为是本发明的优选实施例的内容,但当然应当理解,在不脱离本发明的精神和范围的前提下,可轻易地对形式或细节作出修改和改变。例如,如本文所述的热喷涂层和施加方法可直接或间接地施加到基底的非光滑表面。此外,应当理解,还可以采用除了工作辊以外的任何类型的基底,包括但不旨在限于例如压花辊、雕刻辊、蚀刻辊、滚花辊、夹送辊、压延辊、压块辊、瓦楞辊、计量辊、牵引辊、导丝辊、槽纹辊。因此,意图是本发明并不局限于本文所示和所述的确切形式和细节,也不局限于受后文权利要求保护的本文所公开的本发明整体之内的任何内容。
Claims (30)
1.一种部分热喷涂的基底,所述基底包括适于与工件接触的外表面,所述外表面为非光滑的并且由基础纹理轮廓限定,所述外表面包括沿着所述外表面的第一区域的热喷涂层以产生热涂覆的第一区域,并且,并且所述外表面的其余部分的特征在于不存在沿着所述外表面的第二区域的所述热喷涂层以产生未涂覆的第二区域,其中与所述未涂覆区域的所述第二区域结合的所述外表面的所述热涂覆的第一区域基本上不改变或降解所述外表面的所述基础纹理轮廓,并且进一步地其中所述部分热喷涂的表面的特征在于不存在未热喷涂层。
2.根据权利要求1所述的部分热喷涂的基底,其中沿着所述热涂覆的第一区域的所述部分热涂覆基底具有不低于所述未涂覆的第二区域的峰计数的80%的峰计数,所述峰计数被定义为每单位长度的峰数,如由轮廓仪测量。
3.根据权利要求1所述的部分热喷涂的基底,其中所述热喷涂的第一区域构成所述外表面的总表面积的10%-90%的部分覆盖率。
4.根据权利要求3所述的部分热喷涂的基底,其中所述热涂覆的第一区域构成所述外表面的总表面积的25%-70%。
5.根据权利要求1所述的部分热喷涂的基底,其中所述热涂覆的第一区域具有表面粗糙度Ra,所述Ra为所述未涂覆的第二区域的约50%-80%。
6.根据权利要求1所述的部分热喷涂的基底,所述热涂覆的第一区域的特征在于基本上不存在重叠的薄片。
7.根据权利要求1所述的部分热喷涂的基底,其中所述热涂覆的第一区域以非连续方式沿着所述外表面延伸,以形成多个且离散的涂覆部分。
8.根据权利要求1所述的部分热喷涂的基底,其中所述热涂覆的第一区域以连续方式沿着所述外表面延伸,以形成单个且连续的热喷涂部分,所述单个且连续的热喷涂部分具有不大于约.0003英寸的厚度。
9.根据权利要求1所述的部分热喷涂的基底,其中所述热喷涂层来源于粒度为1微米或更小的粉末。
10.根据权利要求1所述的部分热喷涂的基底,其中所述热喷涂层来源于粒度在纳米级至约5微米范围内的粉末。
11.根据权利要求1所述的部分热喷涂的基底,所述部分热喷涂的基底选自含钨碳化物、钴和含钴合金、镍和含镍合金。
12.根据权利要求1所述的部分热喷涂的基底,其中沿着所述热涂覆的第一区域的所述外表面的所述基础纹理轮廓被改变不超过基于所述非光滑表面的总表面积的10%-90%。
13.根据权利要求12所述的部分热喷涂的基底,其中沿着所述热涂覆的第一区域的所述外表面的所述基础纹理轮廓被改变不超过基于所述非光滑表面的总表面积的25%-50%。
14.根据权利要求7所述的部分热喷涂的基底,其中所述其中所述热涂覆的第一区域以非连续方式沿着所述外表面延伸,以与所述未涂覆的第二区域的多个且离散部分交替的规则间隔形成多个且离散的涂覆部分。
15.根据权利要求1所述的部分热喷涂的基底,其中所述基底选自工作辊、压花辊、雕刻辊、蚀刻辊、滚花辊、夹送辊、压延辊、压块辊、瓦楞辊、计量辊、牵引辊、导丝辊、槽纹辊。
16.根据权利要求1所述的部分热喷涂的基底,还包括基于所述基底的所述外表面的总表面积所述外表面积上的覆盖率至多80%的热涂覆的第一区域,以及覆盖率不大于20%的未涂覆区域;并且进一步地其中沿着所述热涂覆的第一区域的所述外表面的所述基础纹理轮廓被改变不超过基于所述非光滑表面的总表面积的25%-50%。
17.根据权利要求1所述的部分热喷涂的基底,还包括基于所述基底的所述外表面的总表面积所述外表面上的覆盖率为70%-80%的热涂覆的第一区域,其余为未涂覆区域。
18.根据权利要求1所述的部分热喷涂的基底,还包括基于所述基底的所述外表面的总表面积所述外表面上的覆盖率为40%-50%的热涂覆的第一区域,其余为未涂覆区域。
19.根据权利要求1所述的部分热喷涂的基底,还包括基于所述基底的所述外表面的总表面积所述外表面上的覆盖率为30%-40%的热涂覆的第一区域,其余为未涂覆区域。
20.根据权利要求1所述的部分热喷涂的基底,还包括基于所述基底的所述外表面的总表面积所述外表面上的覆盖率为10%-30%的热涂覆的第一区域,其余为未涂覆区域。
21.一种用于形成沿着所述基底的外表面的部分热喷涂的基底而基本上不改变所述基底的所述外表面的纹理轮廓的方法,包括以下步骤:
提供具有所述外表面的所述基底,所述外表面如所述纹理轮廓所限定的那样为非光滑的;
提供热喷装置;
通过所述热喷装置送入粉末或线材原料,以产生至少一部分熔融粉末颗粒;
旋转所述基底;
在所述外表面的第一区域处冲击所述粉末颗粒,从而淬灭所述颗粒以产生热涂覆的第一区域;
保持所述外表面的第二区域基本上不含所述熔融粉末颗粒,以产生未涂覆的第二区域。
22.根据权利要求21所述的方法,还包括:
在多个且离散的位置处沿着所述第一区域中的所述外表面冲击所述熔融粉末颗粒。
23.根据权利要求21所述的方法,还包括以5克/分钟至120克/分钟的进料速率通过所述热喷装置送入所述粉末,并且以900转/分钟至3600转/分钟旋转所述基底。
24.根据权利要求21所述的方法,其中所述热喷装置选自高速氧燃料(HVOF)、爆炸喷涂和等离子转移弧装置。
25.根据权利要求21所述的方法,还包括在形成沿着所述基底的所述外表面的所述部分热喷涂的基底之前赋予所述基底表面粗糙度。
26.根据权利要求21所述的方法,其中将所述部分热喷涂层间接施加到所述基底的所述非光滑表面。
27.一种沿着非光滑表面延伸的热喷涂层,包括:
基底,具有所述非光滑外表面,所述非光滑外表面的特征在于基础纹理轮廓具有如由轮廓仪测量的预定数的峰;
所述热喷涂层,以不大于.0003英寸的厚度隐藏整个所述非光滑外表面,以产生热喷涂表面,并且进一步地其中所述基础纹理轮廓的结构完整性被充分保留;
所述非光滑外表面,其特征在于不存在放电纹理化涂层、电镀涂层、氮化物涂层、渗碳涂层和镀铬涂层。
28.根据权利要求27所述的热喷涂层,其中所述涂层来源于纳米级颗粒。
29.根据权利要求27所述的热喷涂层,其中所述基础纹理轮廓具有所述基底的所述非光滑表面的峰数的50%-80%的峰计数,如由轮廓仪测量。
30.根据权利要求27所述的热喷涂层,还包括含钨碳化物。
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KR102245912B1 (ko) | 2019-07-22 | 2021-05-03 | 주식회사 싸이노스 | 아크 코팅공정에서의 파티클 감소방법 및 이에 의한 코팅층을 갖는 반도체 제조공정의 스퍼터링 장치 |
CN110863164A (zh) * | 2019-11-03 | 2020-03-06 | 霍山汇能汽车零部件制造有限公司 | 一种提高汽车精锻件耐磨性的方法 |
CN115537810A (zh) * | 2022-10-14 | 2022-12-30 | 中国兵器装备集团西南技术工程研究所 | 基于等离子喷涂-激光熔覆制备复合构件的方法 |
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RU2018125542A3 (zh) | 2020-01-13 |
JP6883041B2 (ja) | 2021-06-02 |
JP2018538447A (ja) | 2018-12-27 |
US20170183763A1 (en) | 2017-06-29 |
US10801097B2 (en) | 2020-10-13 |
HUE060392T2 (hu) | 2023-02-28 |
KR102214388B1 (ko) | 2021-02-09 |
RU2732330C2 (ru) | 2020-09-15 |
CA3009179A1 (en) | 2017-06-29 |
SI3394311T1 (sl) | 2023-01-31 |
KR20180094067A (ko) | 2018-08-22 |
WO2017112546A3 (en) | 2017-08-31 |
MX2018007720A (es) | 2018-08-14 |
RU2018125542A (ru) | 2020-01-13 |
BR112018012831A2 (pt) | 2018-12-04 |
EP3394311A2 (en) | 2018-10-31 |
EP3394311B1 (en) | 2022-10-12 |
CA3009179C (en) | 2021-05-18 |
RS63684B1 (sr) | 2022-11-30 |
ES2929711T3 (es) | 2022-12-01 |
BR112018012831B1 (pt) | 2022-04-12 |
KR20210016646A (ko) | 2021-02-16 |
KR102403546B1 (ko) | 2022-05-30 |
PL3394311T3 (pl) | 2022-11-21 |
WO2017112546A2 (en) | 2017-06-29 |
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