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    • 2. 发明授权
    • Slotted conical spring washer
    • 开槽锥形弹簧垫圈
    • US5496142A
    • 1996-03-05
    • US94674
    • 1993-07-20
    • Mark A. FodorCraig BercawCharles Dornfest
    • Mark A. FodorCraig BercawCharles Dornfest
    • F16B1/00F16B43/00F16B39/24F16B43/02H01R4/38
    • F16B43/004F16B2001/0064Y10S411/916
    • A slotted conical (non-flat) spring washer with an encircling ring provides improved spring washer performance. A split or slotted conical spring washer is encircled by a retaining ring that prevents the ends of the washer adjacent to the slot from expanding as the washer is compressed. The ends of the washer on both sides of the slot move to prevent the washer material from exceeding its yield strength. The ring restricts the radial movement of said outside diameter of the washer strip away from a center axis of the washer bore. The ring can be a counter bore in a member to be clamped, a retaining washer having an outside annular washer to act as the ring, or can be integral with the spring washer such that the slot appears not to pass completely through the washer strip.This slotted conical spring washer greatly increases the elastic spring travel available during repeated clamping cycles and during movement of clamped members due to differences in rates of thermal expansion and thermal gradients. A method for using the slotted spring washer fastening system invention assures electrical conductance and/or fluid vessel integrity under high temperatures and thermal gradients and when different materials are used in the clamped and clamping members.
    • 带环圈的开槽锥形(非平面)弹簧垫圈提供了改进的弹簧垫圈性能。 分开或开槽的锥形弹簧垫圈由保持环包围,防止垫圈邻近槽的端部随着垫圈被压缩而膨胀。 槽的两侧的垫圈的端部移动以防止垫圈材料超过其屈服强度。 环限制了垫圈条的所述外径的径向移动远离垫圈孔的中心轴线。 环可以是待夹紧的构件中的沉孔,具有外部环形垫圈以用作环的保持垫圈,或者可以与弹簧垫圈成一体,使得狭槽看起来不能完全穿过垫圈条。 这种开槽的锥形弹簧垫圈大大增加了在重复的夹紧循环期间和由于热膨胀率和热梯度的差异而夹紧构件的运动期间可用的弹性弹簧行程。 使用开槽弹簧垫圈紧固系统的方法,确保了在高温和热梯度下的电导和/或流体容器的完整性,并且当在夹紧和夹紧构件中使用不同的材料时。
    • 4. 发明授权
    • Apparatus and methods for controlling process chamber pressure
    • 用于控制处理室压力的装置和方法
    • US6123097A
    • 2000-09-26
    • US672891
    • 1996-06-28
    • Quoc TruongImad YousifVincente LimCraig Bercaw
    • Quoc TruongImad YousifVincente LimCraig Bercaw
    • F16K49/00F16K51/02
    • F16K49/002F16K51/02Y10T137/428Y10T137/6416Y10T137/6606
    • The present invention provides an apparatus and methods for controlling gas pressure within a semiconductor process chamber. The apparatus comprises a throttle valve 32 positioned downstream of the process chamber outlet for controlling gas flow therethrough. The throttle valve includes a valve body 41 having a through-hole and a plug 44 movably disposed within the valve body for controlling gas flow through the through-hole. The throttle valve incorporates an abrasive element 86 disposed within the valve body in abrading contact with an exposed surface 89 of the plug. The abrasive element effectively removes gas deposited onto the exposed surface of the valve plug during operation of the throttle valve. In another aspect of the invention, the valve body comprises one or more heating elements 77, 78 thermally coupled to the exposed surface of the valve plug for conductively transferring heat to the exposed surface of the valve plug, thereby inhibiting solidification of process gases that may have deposited on this surface.
    • 本发明提供一种用于控制半导体处理室内的气体压力的装置和方法。 该设备包括位于处理室出口下游的节流阀32,用于控制气流从中流过。 节流阀包括具有通孔的阀体41和可移动地设置在阀体内的塞子44,用于控制通过通孔的气流。 节流阀包括设置在阀体内的研磨元件86,其与插头的暴露表面89研磨接触。 研磨元件在节流阀操作期间有效地除去沉积在阀塞暴露表面上的气体。 在本发明的另一方面,阀体包括与阀塞的暴露表面热耦合的一个或多个加热元件77,78,用于将热量传导到阀塞的暴露表面,由此抑制工艺气体的凝固, 已沉积在该表面上。
    • 9. 发明授权
    • Corrosion-resistant aluminum article for semiconductor processing
equipment
    • 用于半导体加工设备的耐腐蚀铝制品
    • US5811195A
    • 1998-09-22
    • US499983
    • 1995-07-10
    • Craig BercawLaxman MurugeshJoshua E. Byrne
    • Craig BercawLaxman MurugeshJoshua E. Byrne
    • C23C8/02C23C8/08C23C8/36C23C16/44H01J37/32H01L21/02G02B5/08
    • H01J37/32477C23C16/4404C23C8/02C23C8/08C23C8/36H01J37/32559Y10T428/12729Y10T428/12736Y10T428/24967Y10T428/265
    • We have discovered that corrosion of an aluminum article (such as a susceptor) exposed to corrosive halogen-containing species within semiconductor processing apparatus can be avoided by fabricating the article from a high purity aluminum-magnesium alloy having an optimum magnesium content. Upon exposure of the article to a halogen-containing species, a protective magnesium halide layer is formed upon or beneath the surface of the article. The protective layer prevents halogens from penetrating to the base aluminum, thereby protecting the article from corrosion and cracking. To protect the magnesium halide layer from abrasion, the article preferably also includes a hard, cohesive coating over the magnesium halide layer. A preferred cohesive coating is aluminum oxide or aluminum nitride. The magnesium content of the aluminum article, to enable formation of a magnesium halide layer, should be in the range of about 0.1% to about 6% by weight, depending on the operational temperature of the article. For temperatures greater than about 250.degree. C., the magnesium content of the aluminum article should range between about 0.1% by weight and about 1.5% by weight of the article. The magnesium may be present throughout the entire article, or at least in a region of the article beneath or at the surface which is to be rendered corrosion-resistant. Although the magnesium can react with chlorine, fluorine, or bromine to form a protective layer of MgCl.sub.2, MgF.sub.2, MgBr.sub.2 or combinations thereof, the most preferred protective layer is one formed of MgF.sub.2. To ensure that the magnesium present in the aluminum article is available for reaction with the halogen to form the protective layer, the magnesium content should exceed the silicon content of the aluminum article by an amount sufficient to ensure formation of the protective layer.
    • 我们已经发现,通过从具有最佳镁含量的高纯度铝镁合金制造该制品,可以避免在半导体加工装置内暴露于含腐蚀性卤素物质的铝制品(例如感受器)的腐蚀。 在将物品暴露于含卤素物质时,在制品的表面上或下方形成保护性卤化镁层。 保护层防止卤素渗透到基底铝,从而保护制品免受腐蚀和破裂。 为了保护卤化镁层免受磨损,制品优选还包括在卤化镁层上的硬的,内聚的涂层。 优选的粘合涂层是氧化铝或氮化铝。 取决于制品的操作温度,铝制品的镁含量,以形成卤化镁层应当在约0.1%至约6%重量的范围内。 对于大于约250℃的温度,铝制品的镁含量应在制品的约0.1重量%至约1.5重量%的范围内。 镁可以存在于整个制品中,或至少在制品的下方或表面上的要被赋予耐腐蚀性的区域中。 虽然镁可与氯,氟或溴反应形成MgCl 2,MgF 2,MgBr 2或其组合的保护层,但最优选的保护层是由MgF 2形成的保护层。 为了确保铝制品中存在的镁可用于与卤素反应以形成保护层,镁含量应超过铝制品的硅含量足以确保保护层的形成。