CN105765248B - 具有由包含almgb14的陶瓷基复合材料制造的部件的轴承 - Google Patents
具有由包含almgb14的陶瓷基复合材料制造的部件的轴承 Download PDFInfo
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Abstract
本文提供一种轴承的实施例。在一个实施例中,轴承可以包括具有内座圈和外座圈的轴承组件;布置在所述内座圈与所述外座圈之间的多个滚动元件,其中,所述内座圈、所述外座圈和所述多个滚动元件中的至少一个至少部分地由包含AlMgB14的陶瓷基复合材料制成。
Description
技术领域
本文公开的主题总体上涉及轴承,并且更具体地,涉及旋转和/或滚动元件轴承。
背景技术
用以例如在两个或者更多个物体(例如,旋转轴承)之间提供相对旋转运动的常规轴承通常由具有适合于在期望的应用中承受施加在轴承上的应力的性质的材料来制造。例如,展示出高硬度和/或韧性的材料,例如,诸如钢合金、陶瓷等通常用于制造轴承的一个或多个部件。然而,发明人已经注意到,在轴承的部件易受到增加的应力(例如,高赫兹接触应力(Hertzian contact stress))的应用,例如,飞行器或者航空航天应用中,这种常规材料显示出不可接受的变形量和/或退化量,从而导致轴承失效。
因此,发明人已经提供一种改进的轴承,其具有由陶瓷基复合材料制成的部件。
发明内容
本文提供了轴承的实施例。在一个实施例中,轴承可以包括具有内座圈和外座圈的轴承组件;以及布置在内座圈与外座圈之间的多个滚动元件,其中,内座圈、外座圈和多个滚动元件中的至少一个至少部分地由包含AlMgB14的陶瓷基复合材料制成。
在一个实施例中,轴承可以包括具有内座圈和外座圈的轴承组件;以及布置在内座圈与外座圈之间的多个滚动元件,其中,内座圈、外座圈和多个滚动元件中的至少一个是由包含AlMgB14的陶瓷基复合材料制成的整体式零件,其中,包含AlMgB14的陶瓷基复合材料包括多个包含AlMgB14的颗粒或者纤维,包含AlMgB14的颗粒或者纤维分散遍布包含TiB2的金属基质。
参照附图和详细描述将进一步理解本发明的实施例的前述特征和其它特征。
附图说明
参照附图中所描绘的本发明的说明性实施例能够理解上文简要概述的并且在下文更加详细地讨论的本发明的实施例。然而,应当注意的是,附图仅图示本发明的典型实施例并且因此不应被认为在范围上受到限制,原因在于本发明可以容许其它同样有效的实施例。
图1是根据本发明的一些实施例的轴承的透视图。
图2是根据本发明的一些实施例的轴承的一部分的横截面视图。
图3是根据本发明的一些实施例的轴承的轴承组件的一部分的横截面视图。
为了促进理解,在可行的情况下,相同的附图标记用于标记附图中共有的相同元件。附图未按照比例绘制并且为了清晰可以简化。预想的是,一个实施例中的元件和特征可以有利地结合在其它实施例中而不需进一步复述。
具体实施方式
本文公开了轴承的实施例。创造性的轴承包括一个或多个部件(例如,轴承组件、内座圈或者外座圈、滚动元件等),所述一个或多个部件至少部分地由包含铝-镁-硼(AlMgB14、“BAM”)的陶瓷基复合材料制成。由包含AlMgB14的陶瓷基复合材料来制造一个或多个部件有利地提供如下轴承:与由常规利用的材料制成的轴承相比,在高应力应用中,该轴承具有承受施加在轴承上的应力的改进的能力。
图1是根据本发明的一些实施例的轴承100的透视图。在一个实施例中,轴承100通常包括具有内座圈104和外座圈102的轴承组件118,和布置在内座圈104与外座圈102之间的多个滚动元件106。
内座圈104布置在外座圈102内并且独立于外座圈102旋转。在一个实施例中,内座圈104和外座圈102中的每一个可以包括特征,例如凸缘(在110和112处部分地以虚线示出),其构造成将多个滚动元件106保持在内座圈104与外座圈102之间的期望位置中。当存在时,凸缘110和112可以是联接至内座圈104或者外座圈102的单独部件,或者替代地,它们与内座圈104或者外座圈102一体地形成,从而提供具有整体设计的轴承组件118。
多个滚动元件106与内座圈104和外座圈102的内表面114和116接触,并且独立于内座圈104和外座圈102中的每一个旋转,从而当处于负载下(例如,径向和/或推力载荷)时,使内座圈104与外座圈102之间的摩擦最小化,因此允许内座圈104和外座圈102相对于彼此旋转。多个滚动元件106可以是适合于促进内座圈104与外座圈102之间的相对可旋转运动的任何类型的滚动元件,以形成期望类型的轴承。例如,多个滚动元件106可以包括圆筒形滚子、针形滚子、锥形滚子、球形滚子等。
在一个实施例中,轴承100可以包括笼架(cage,在108处部分地以虚线示出),笼架布置在多个滚动元件106周围。当存在时,笼架108可以用以防止多个滚动元件106中的单个滚动元件之间的接触,从而防止多个滚动元件106的磨损、退化或者粘合。
发明人已经注意到,在轴承100的操作中,轴承100的一个或多个部件(例如,内座圈104、外座圈102、多个滚动元件106、笼架108等)可能由于施加在轴承上的力(例如,由轴承100的径向和/或推力载荷产生的赫兹接触应力)而轻微地变形。这种变形使得部件之间的摩擦力增加,因而引起轴承100的操作效率更低(例如,“阻滞(drag)”)和/或引起部件的退化。发明人已经进一步注意到,例如在轴承100遭受增加的应力的应用(诸如航空或者航天航空应用)中,通常被用于制造轴承的常规材料(例如,钢合金、陶瓷等)展示出导致轴承100过早失效或者频繁失效的大量变形和/或退化。
这样,在一个实施例中,轴承100的至少一个或多个部件(例如,内座圈104、外座圈102、多个滚动元件106、笼架108等)至少部分地由包含铝-镁-硼(AlMgB14,“BAM”)的陶瓷基复合材料制成。发明人已经注意到,用包含AlMgB14的陶瓷基复合材料至少部分地制造轴承100的一个或多个部件有利地提供生成的制造部件,该制造部件展示出减少的或消除的变形和/或退化(否则将在高应力下产生),从而提供一种相比于具有由常规利用的材料制成的部件的轴承,在高应力应用中更加有效并且遭受更少失效的轴承。
在不受理论束缚的情况下,发明人认为包含AlMgB14的陶瓷基复合材料的物理和/或化学性质(例如,硬度、润滑性、热膨胀系数、耐热性、导电性和/或导热性等)提供了上述的变形和/或退化的减少或者消除。例如,在一个实施例中,发明人已经注意到包含AlMgB14的陶瓷基复合材料具有以下性质中的一种或者多种:1500 Hv至约4500 Hv之间的硬度(Hv)、小于约0.05的摩擦系数(或者在一个实施例中,约0.02)、大于约80的硬度(Rc)、约2.6 g/cc至约3.8 g/cc的密度、约6至约11 10-6/K的膨胀系数,以及约5至约15 Mpa √M的断裂韧性(Klc)。发明人认为,一种或者多种上述性质(例如,硬度)可以是由AlMgB14的晶体结构导致的,具体地,是由通常在基于硼的晶体材料中发现的高阶共价键合的B14正二十面体结构导致的。
包含AlMgB14的陶瓷基复合材料的成分可以变化以例如提供一种或者多种期望的性质(诸如上文所描述的性质)。例如,在一个实施例中,铝、镁和硼之比可以由x:y:14表示(例如,AlxMgyB14),其中,x和y小于约1。
在一个实施例中,包含AlMgB14的陶瓷基复合材料可以包括包含金属的基质,其具有分散遍布该包含金属的基质中的包含AlMgB14的陶瓷纤维或者颗粒。包含金属的基质可以包括任何金属,例如,诸如以下金属中的至少一种:第Ⅲ族元素(钪(Sc)、钇(Y)等)、第Ⅳ族元素(钛(Ti)、锆(Zr)、铪(Hf)等)、第Ⅴ族元素(钒(V)、铌(Nb)、钽(Ta)等)、其氮化物、其硼化物等。可以使包含AlMgB14的陶瓷基复合材料内的AlMgB14和包含金属的基质的量变化以例如提供一种或者多种期望的性质(诸如上文描述的性质)。例如,在一个实施例中,包含金属的基质可以以包含AlMgB14的陶瓷基复合材料的总重量的高达约90%、或者在一个实施例中约30%至90%、或者在一个实施例中约40%至70%的量存在。
在示例性实施例中,包含金属的基质可以是硼化钛(TiB2)基质。在这种实施例中,包含AlMgB14的陶瓷基复合材料将因此包括硼化钛(TiB2)基质,该硼化钛(TiB2)基质具有分散在基质中的许多包含AlMgB14的陶瓷颗粒或者纤维。当存在时,包含AlMgB14的陶瓷基复合材料中存在的AlMgB14与硼化钛(TiB2)之比可以是例如适合于提供一种或者多种期望性质(诸如上文描述的性质)的任何比。例如,在一个实施例中,AlMgB14与TiB2之比可以是约1:1。
未由上文描述的包含AlMgB14的陶瓷基复合材料制成的轴承100的部件可以由适合于根据期望的应用促进轴承100的令人满意的性能的任何工艺兼容材料制成。例如,轴承100的一个或多个部件可以例如由诸如不锈钢、陶瓷(例如氮化硅(Si3N4))等的金属合金制成。
可以经由适合于用包含AlMgB14的陶瓷基复合材料制造一个或多个部件的任何工艺,并且根据所制造部件的一种或者多种期望的物理性质来制造轴承100的一个或多个部件。例如,在一个实施例中,该工艺可以适合于将部件制造成全密度或者近似全密度(例如,孔隙率小于约5%)。制造成全密度或者近似全密度可以使上文描述的一种或多种期望的性质(例如,断裂韧性(Klc)、硬度(Hv)等)最大化,从而使轴承100相比于由常规利用的材料制成的轴承,在高应力应用中承受施加在轴承100上的应力的能力增加。示例性制造技术可以包括热隔离压制(HIP)、固态加工(例如,真空热压(VHP)、放电等离子烧结(SPS)等)、沉积(例如,激光送粉沉积(LAM)、等离子气相沉积(PVD)等)、直接材料激光制造(DMLM)等。
一个或多个部件可以部分地或者完全地由包含AlMgB14的陶瓷基复合材料制成。例如,参照图2,在一个实施例中,多个滚动元件(图1中的106)中的滚动元件206可以是整体式零件。在这种实施例中,滚动元件206的主体202完全由包含AlMgB14的陶瓷基复合材料制成。替代地,在一个实施例中,包含AlMgB14的陶瓷基复合材料的涂层(包层)204可以布置在滚动元件206的主体202上。在这种实施例中,主体202可以由包含AlMgB14的陶瓷基复合材料制成,或者由不同的兼容材料(例如,钢合金、陶瓷等)制成。
参照图3,与图2的滚动元件206相似,至少一个座圈306(上文描述的内座圈194和/或外座圈102)可以是整体式零件,其具有完全由包含AlMgB14的陶瓷基复合材料制成的主体302和/或布置在座圈306的主体302上的包含AlMgB14的陶瓷基复合材料的涂层(包层)。
尽管在附图中示出为滚动元件轴承,但应理解的是,轴承可以是适合于提供两个物体之间的相对运动并且可以从本文提供的教导受益的任何类型的轴承。例如,轴承可以是普通轴承、宝石轴承、液压轴承、磁性轴承、轴颈轴承、柔性轴承、线性轴承、循环轴承等。
本文公开的范围是包含性的并且能够组合(例如,“约1500至约4500的硬度(Hv)”的范围包含端点以及在“约1500至约4500”的范围中的所有中间值,等等)。“组合”包含掺合物、混合物、合金、反应产物等等。此外,术语“第一“、”第二“等在本文中不表示任何次序、数量或者重要性,而是用于将元件彼此区分开,并且术语“一”和“一个”在本文中不表示对数量的限制,而是表示存在至少一个所提及的物品。与数量连同使用的修饰词“约”包含状态值并且具有上下文所指示的含义,(例如,包括与具体数量的测量相关联的误差度)。本文中使用的后缀“s”旨在包括其修饰的术语的单数和复数两种形式,从而包括一个或多个该术语(例如,colorant(s)包括一个或者多个着色剂(colorant))。贯穿本说明书中提及“一个实施例”、“另一个实施例”、“实施例”等,意味着与该实施例连同描述的具体元件(例如,特征、结构和/或特性)包含在本文所描述的至少一个实施例中,并且可以或者可以不存在于其它实施例中。此外,应理解的是,所描述的元件可以在各种实施例中以任何适合的方式组合。
因此,本文已提供轴承的实施例。在至少一个实施例中,相比于通常利用的轴承,本发明的创造性轴承可以有利地作用在更加广泛的操作条件(例如,更高的应力载荷)中,从而提供在更加广泛的应用中具有改进性的功能的轴承。
虽然已经参照示例性实施例描述了本发明,但本领域的技术人员将理解,在不背离本发明的范围的情况下,可以作出各种改变并且等价物可以替代其元件。此外,在不背离本发明的基本范围的情况下,可以作出许多改型以使具体情况或者材料适应于本发明的教导。因此,本发明旨在不限制于作为对于执行本发明所预想的最佳模式所公开的具体实施例,而是本发明将包括所有落在所附权利要求的范围内的实施例。
Claims (15)
1.一种轴承,包括:
具有内座圈和外座圈的轴承组件;以及
布置在所述内座圈与所述外座圈之间的多个滚动元件,其中,所述内座圈、所述外座圈和所述多个滚动元件中的至少一个是由包含AlMgB14的陶瓷基复合材料制成的整体式零件。
2.根据权利要求1所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料中的铝、镁和硼之比由x:y:14表示,其中,x和y小于1。
3.根据权利要求1所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料包括包含金属的基质,所述包含金属的基质具有遍布所述包含金属的基质分散的多个包含AlMgB14的颗粒或者纤维。
4.根据权利要求3所述的轴承,其中,所述包含金属的基质包括第Ⅲ族元素、第Ⅳ族元素、或者第Ⅴ族元素中的至少一种。
5.根据权利要求3所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料包括所述包含金属的基质,所述包含金属的基质的量高达所述包含AlMgB14的陶瓷基复合材料的总重量的约90%。
6.根据权利要求1所述的轴承,其中,所述整体式零件具有小于5%的孔隙率。
7.根据权利要求1所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料具有约1500至约4500的硬度(Hv)。
8.根据权利要求1所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料具有小于0.05的摩擦系数。
9.一种轴承,包括:
具有内座圈和外座圈的轴承组件;以及
布置在所述内座圈与所述外座圈之间的多个滚动元件,其中,所述内座圈、所述外座圈和所述多个滚动元件中的至少一个是由包含AlMgB14的陶瓷基复合材料制成的整体式零件,其中,所述包含AlMgB14的陶瓷基复合材料包括遍布包含TiB2的金属基质分散的多个包含AlMgB14的颗粒或者纤维。
10.根据权利要求9所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料内的AlMgB14与TiB2之比可以是约1:1。
11.根据权利要求9所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料包括所述包含TiB2的金属基质,所述包含TiB2的金属基质的量高达所述包含AlMgB14的陶瓷基复合材料的总重量的约90%。
12.根据权利要求9所述的轴承,其中,所述整体式零件具有小于5%的孔隙率。
13.根据权利要求9所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料中的铝、镁和硼之比由x:y:14表示,其中,x和y小于1。
14.根据权利要求9所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料具有约1500至约4500的硬度(Hv)。
15.根据权利要求9所述的轴承,其中,所述包含AlMgB14的陶瓷基复合材料具有小于0.05的摩擦系数。
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US20150139582A1 (en) | 2015-05-21 |
EP3071533B1 (en) | 2023-10-25 |
JP2016539290A (ja) | 2016-12-15 |
CN105765248A (zh) | 2016-07-13 |
US9169872B2 (en) | 2015-10-27 |
BR112016010483A8 (pt) | 2020-04-22 |
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