WO2001000901A1 - Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof - Google Patents

Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof Download PDF

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Publication number
WO2001000901A1
WO2001000901A1 PCT/US2000/040229 US0040229W WO0100901A1 WO 2001000901 A1 WO2001000901 A1 WO 2001000901A1 US 0040229 W US0040229 W US 0040229W WO 0100901 A1 WO0100901 A1 WO 0100901A1
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WO
WIPO (PCT)
Prior art keywords
coating
nickel plating
ceramic coating
component
phosphorus nickel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/040229
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English (en)
French (fr)
Other versions
WO2001000901A9 (en
Inventor
Robert J. Steger
Chris Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lam Research Corp
Original Assignee
Lam Research Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lam Research Corp filed Critical Lam Research Corp
Priority to AU65407/00A priority Critical patent/AU6540700A/en
Priority to JP2001506301A priority patent/JP4608159B2/ja
Publication of WO2001000901A1 publication Critical patent/WO2001000901A1/en
Anticipated expiration legal-status Critical
Publication of WO2001000901A9 publication Critical patent/WO2001000901A9/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
    • H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
    • H01L21/3065—Plasma etching; Reactive-ion etching
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
    • C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer

Definitions

  • the present invention relates to semiconductor processing equipment and a method of improving corrosion resistance of such components.
  • vacuum processing chambers are generally used for etching and chemical vapor deposition (CVD) of materials on substrates by supplying an etching or deposition gas to the vacuum chamber and application of an RF field to the gas to energize the gas into a plasma state.
  • CVD chemical vapor deposition
  • TCPTM transformer coupled plasma
  • ICP inductively coupled plasma
  • ECR electron-cyclotron resonance
  • other equipment used in processing semiconductor substrates include transport mechanisms, gas supply systems, liners, lift mechanisms, load locks, door mechanisms, robotic arms, fasteners, and the like.
  • the components of such equipment are subject to a variety of corrosive conditions associated with semiconductor processing. Further, in view of the high purity requirements for processing semiconductor substrates such as silicon wafers and dielectric materials such as the glass substrates used for flat panel displays, components having improved corrosion resistance are highly desirable in such environments.
  • Aluminum and aluminum alloys are commonly used for walls, electrodes, substrate supports, fasteners and other components of plasma reactors.
  • various techniques have been proposed for coating the aluminum surface with various coatings.
  • U.S. Patent No. 5,641,375 discloses that aluminum chamber walls have been anodized to reduce plasma erosion and wear of the walls. The '375 patent states that eventually the anodized layer is sputtered or etched off and the chamber must be replaced.
  • U.S. Patent No. 5,895,586 states that a technique for forming a corrosion resistant film of Al 2 O 3 , A1C, TiN, TiC, A1N or the like on aluminum material can be found in Japanese Application Laid-Open No. 62-103379.
  • U.S. Patent No. 5,680,013 states that a technique for flame spraying Al 2 O 3 on metal surfaces of an etching chamber is disclosed in U.S. Patent No. 4,491,496.
  • the '013 patent states that the differences in thermal expansion coefficients between aluminum and ceramic coatings such as aluminum oxide leads to cracking of the coatings due to thermal cycling and eventual failure of the coatings in corrosive environments.
  • U.S. Patent Nos. 5,366,585; 5,798,016; and 5,885,356 propose liner arrangements.
  • the '016 patent discloses a liner of ceramics, aluminum, steel and/or quartz with aluminum being preferred for its ease of machinability and having a coating of aluminum oxide, Sc 2 O 3 or Y 2 O 3 , with Al 2 O 3 being preferred for coating aluminum to provide protection of the aluminum from plasma.
  • the '585 patent discloses a free standing ceramic liner having a thickness of at least 0.005 inches and machined from solid alumina.
  • the '585 patent also mentions use of ceramic layers which are deposited without consuming the underlying aluminum can be provided by flame sprayed or plasma sprayed aluminum oxide.
  • the '356 patent discloses a ceramic liner of alumina and a ceramic shield of aluminum nitride for the wafer pedestal.
  • U.S. Patent No. 5,885,356 discloses ceramic liner materials for use in CVD chambers.
  • U.S. Patent No. 5,879,523 discloses a sputtering chamber wherein a thermally sprayed coating of Al 2 O 3 is applied to a metal such as stainless steel or aluminum with an optional NiAl x bond coating therebetween.
  • U.S. Patent Nos. 5,522,932 and 5,891,53 disclose a rhodium coating for metal components of an apparatus used for plasma processing of substrates with an optional nickel coating therebetween.
  • U.S. Patent No.5, 680, 013 discloses non-bonded ceramic protection for metal surfaces in a plasma processing chamber, the preferred ceramic material being sintered A1N with less preferred materials including aluminum oxide, magnesium fluoride, and magnesium oxide.
  • Patent No. 5,904,778 discloses a SiC CVD coating on free standing SiC for use as a chamber wall, chamber roof, or collar around the wafer.
  • plasma reactor components such as showerhead gas distribution systems
  • various proposals have been made with respect to the materials of the showerheads.
  • commonly owned U.S. Patent No. 5,569,356 discloses a showerhead of silicon, graphite, or silicon carbide.
  • U.S. Patent No. 5,494,713 discloses forming an alumite film on an aluminum electrode and a silicon coating film such as silicon oxide or silicon nitride over the alumite film.
  • the thickness of the silicon coating film should be 10 ⁇ m or less, preferably about 5 ⁇ m, since the aluminum coating film, the alumite coating film and the silicon coating film have different coefficients of linear expansion and cracks are easily generated when the thickness of the silicon coating film is too thick. A thickness below 5 ⁇ m, however, is stated to be unfavorable since the protection of the aluminum substrate is insufficient.
  • U.S. Patent No. 4,534,516 discloses an upper showerhead electrode of stainless steel, aluminum, copper or the like.
  • U.S. Patent No. 4,612,077 discloses a showerhead electrode of magnesium.
  • U.S. Patent No. 5,888,907 discloses a showerhead electrode of amorphous carbon, SiC or Al.
  • Patent Nos. 5,006,220 and 5,022,979 disclose a showerhead electrode either made entirely of SiC or a base of carbon coated with SiC deposited by CVD to provide a surface layer of highly pure SiC.
  • a showerhead electrode either made entirely of SiC or a base of carbon coated with SiC deposited by CVD to provide a surface layer of highly pure SiC.
  • a process for providing a corrosion resistant coating on a metal surface of a semiconductor processing equipment component includes: (a) depositing a phosphorus nickel plating on a metal surface of the component; and (b) depositing a ceramic coating on the phosphorus nickel plating so as to form an outer corrosion resistant surface.
  • the metal surface can be anodized or unanodized aluminum, stainless steel, a refractory metal such as molybdenum or other metal or alloy used in plasma chambers.
  • the ceramic coating can be alumina, SiC, AIN, Si 3 N 4 , BC or other plasma compatible ceramic material.
  • a metal component includes: (a) a metal surface; (b) a phosphorus nickel plating on the metal surface; and (c) a ceramic coating on the nickel plating, wherein the alumina coating forms an outer corrosion resistant surface.
  • FIG. 1 is a schematic cross-sectional view of a plasma reactor chamber having a component coated with a corrosion resistant coating in accordance with the present invention.
  • Figure 2 shows details of the corrosion resistant coating in detail A of
  • the invention provides an effective way to provide corrosion resistance to metal surfaces of components of semiconductor processing apparatus such as parts of a plasma processing reactor chamber.
  • components include chamber walls, substrate supports, gas distribution systems including showerheads, baffles, rings, nozzles, etc., fasteners, heating elements, plasma screens, liners, transport module components, such as robotic arms, fasteners, inner and outer chamber walls, etc. , and the like.
  • Figure 1 illustrates a vacuum processing reactor chamber 10 that includes a substrate holder 70 providing an electrostatic clamping force to a substrate 60 as well as providing an RF bias to the substrate while it is He backcooled.
  • a focus ring 72 confines plasma in an area above the substrate.
  • a source of energy for maintaining a high density (e.g., 10 n -10 12 ions/cm 3 ) plasma in the chamber such as an antenna 40 powered by a suitable RF source to provide a high density plasma is disposed at the top of reactor chamber 10.
  • the chamber includes suitable vacuum pumping apparatus for maintaining the interior 30 of the chamber at a desired pressure (e.g., below 50 mTorr, typically 1-20 mTorr) by evacuating the chamber through the centrally located vacuum port 20 at the bottom of the chamber.
  • a desired pressure e.g., below 50 mTorr, typically 1-20 mTorr
  • a substantially planar dielectric window 50 of uniform thickness provided between the antenna 40 and the interior of the processing chamber 10 forms the vacuum wall at the top of the processing chamber 10.
  • a gas distribution plate 52 is provided beneath window 20 and includes openings such as circular holes for delivering process gas from a gas supply to the chamber 10.
  • a conical liner 54 extends from the gas distribution plate and surrounds the substrate holder 70.
  • a semiconductor substrate such as a silicon wafer 60 is positioned on the substrate holder 70 and is typically held in place by an electrostatic clamp 74 while He backcooling is employed.
  • Process gas is then supplied to the vacuum processing chamber 10 by passing the process gas through a gap between the window 50 and the gas distribution plate 52.
  • Suitable gas distribution plate arrangements i.e., showerhead
  • window and gas distribution plate arrangement in Figure 1 are planar and of uniform thickness
  • non-planar and/or non-uniform thickness geometries can be used for the window and/or gas distribution plate.
  • a high density plasma is ignited in the space between the substrate and the window by supplying suitable RF power to the antenna 40.
  • Chamber walls 28 such as anodized or unanodized aluminum walls and metal components such as the substrate holder 70, fasteners 56, liners 54, etc., that are exposed to plasma and show signs of corrosion are candidates for coating according to the invention, thus avoiding the need to mask them during operation of the plasma chamber.
  • metals and/or alloys that may be coated include anodized or unanodized aluminum and alloys thereof, stainless steel, refractory metals such as W and Mo and alloys thereof, copper and alloys thereof, etc.
  • the component to be coated is a chamber wall 28 having an anodized or unanodized aluminum surface 29.
  • the coating according to the invention permits use of aluminum alloys without regard as to its composition (thus allowing use of more economical aluminum alloys in addition to highly pure aluminum), grain structure or surface conditions.
  • an example of a component to be coated is an aluminum chamber wall 28 having a phosphorus nickel coating 80 and a ceramic coating 90, as illustrated in Figure 2.
  • a phosphorus nickel layer 80 is coated on the aluminum sidewall 28 by a conventional technique, including for example plating such as electroless and electroplating, sputtering, immersion coating or chemical vapor deposition.
  • Electroless plating is a preferred method of providing the P-Ni coating, allowing intricate interior surfaces of the chamber or other chamber component such as gas passages in gas supply components to be plated without the use of an electric current.
  • An example of a technique for electroless plating of a P-Ni alloy is disclosed in U.S. Patent No. 4,636,255, the disclosure of which is hereby incorporated by reference.
  • conventional electroless plating processes are disclosed in Metals Handbook, edited by H. Boyer and T. Gall, 5 nd Ed., American Society For Metals (1989).
  • the surface of the aluminum substrate 28 is preferably thoroughly cleaned to remove surface material such as oxides or grease prior to plating.
  • a preferred nickel alloy plating includes P in an amount of about 9 to about 12 weight percent and more preferably about 10 to about 12 weight percent.
  • the P-Ni coating 80 is sufficiently thick to adhere to the substrate and to further allow it to be processed prior to forming a ceramic layer 90 such as alumina, SiC, Si 3 N 4 , BC, AIN, etc. on the surface of the nickel.
  • the P-Ni coating 80 can have any suitable thickness such as a thickness of at least about 0.002 inches, preferably from about 0.002 to about 0.010 inches more preferably between 0.002 and 0.004 inches.
  • the plating can be blasted or roughened by any suitable technique, and then overcoated with a ceramic material.
  • the ceramic material is preferably thermally sprayed onto the phosphorus nickel coating 80.
  • the thus roughened layer 80 provides a particularly good bond with the molten ceramic particles.
  • the ceramic coating 90 can comprise any desired ceramic material or combination of materials such as Al 2 O 3 , SiC, Si 3 N 4 , BC, AIN, TiO 2 , etc.
  • the ceramic coating may be applied by other deposition techniques, such as chemical vapor deposition or RF sputtering.
  • the preferred coating method is via thermal spraying in which ceramic powder is melted and incorporated in a gas stream directed at the component being spray coated.
  • thermal spraying techniques An advantage of thermal spraying techniques is that the metal body is coated only on the sides facing the thermal spray gun, and masking can be used to protect other areas. Conventional thermal spraying techniques, including plasma spraying are addressed in The Science and Engineering of Thermal Spray Coating by Pawlowski (John Wiley, 1995).
  • the ceramic layer 90 in the preferred embodiment is deposited by plasma spraying alumina onto the P-Ni layer 80 to a suitable thickness such as in the range of about 0.005 to about 0.040 inches, preferably 0.010 to 0.015 inches thick.
  • the thickness of the alumina layer can be selected to be compatible with the plasma environment to be encountered in the reactor (e.g. , etching, CVD, etc.).
  • This layer of alumina 90 may be coated on all or part of the reactor chamber and components as discussed above. It is preferred that it be placed on the regions that may or may not be exposed to the plasma environment such as parts in direct contact with the plasma or parts behind chamber components such as liners, etc., to prevent nickel and/or aluminum contamination of the semiconductor substrates processed in the reactor chamber.
  • unsatisfactory etching or undesirable formation of pinholes in deposited films is reduced by suppressing occurrence of dust by corrosion.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical Vapour Deposition (AREA)
  • Drying Of Semiconductors (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Chemically Coating (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
PCT/US2000/040229 1999-06-30 2000-06-14 Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof Ceased WO2001000901A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU65407/00A AU6540700A (en) 1999-06-30 2000-06-14 Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof
JP2001506301A JP4608159B2 (ja) 1999-06-30 2000-06-14 半導体処理装置の耐腐食性部材およびその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/343,692 1999-06-30
US09/343,692 US6444083B1 (en) 1999-06-30 1999-06-30 Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof

Publications (2)

Publication Number Publication Date
WO2001000901A1 true WO2001000901A1 (en) 2001-01-04
WO2001000901A9 WO2001000901A9 (en) 2002-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/040229 Ceased WO2001000901A1 (en) 1999-06-30 2000-06-14 Corrosion resistant component of semiconductor processing equipment and method of manufacturing thereof

Country Status (7)

Country Link
US (1) US6444083B1 (enExample)
JP (1) JP4608159B2 (enExample)
KR (1) KR100636076B1 (enExample)
CN (1) CN100357493C (enExample)
AU (1) AU6540700A (enExample)
TW (1) TW524885B (enExample)
WO (1) WO2001000901A1 (enExample)

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