US2734837A - Surface treatment of titanium or - Google Patents

Surface treatment of titanium or Download PDF

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Publication number
US2734837A
US2734837A US45871054A US2734837A US 2734837 A US2734837 A US 2734837A US 45871054 A US45871054 A US 45871054A US 2734837 A US2734837 A US 2734837A
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United States
Prior art keywords
titanium
surface treatment
hydrochloric acid
surface
method
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Priority to GB336483X priority Critical
Priority to GB27794/53A priority patent/GB758013A/en
Priority to GB220954X priority
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Publication of US2734837A publication Critical patent/US2734837A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34Pretreatment of metallic surfaces to be electroplated
    • C25D5/38Pretreatment of metallic surfaces to be electroplated of refractory metals or nickel
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10Other heavy metals
    • C23G1/106Other heavy metals refractory metals
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/408Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12Analogue/digital converters
    • H03M1/22Analogue/digital converters pattern-reading type
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00Gear cutting, milling, or planing
    • Y10T409/30Milling
    • Y10T409/30084Milling with regulation of operation by templet, card, or other replaceable information supply

Description

United States Patent SURFACE TREATMENT OF TITANIUM OR TITANIUM BASE ALLOYS Sidney Hands, Walsall, England, assignor to Chemical Industries Limited, poration of Great Britain N 0 Drawing. Application September 27, 1954, Serial No. 458,710

Imperial London, England, a cor- This invention relates to the treatment of titanium or titanium base alloy articles for the purpose of preparing an activated surface thereon prior to for example electroplating.

Titanium on exposure to air or other oxidising atmospheres forms a surface skin consisting chiefly of oxide, the complete removal of which to give a surface capable of receiving a good electrodeposited coating of another metal is not readily effected by standard pickling or etching compositions.

According to the present invention we provide a method of surface treatment of titanium or titanium base alloy articles prior to deposition of a coating metal thereon which comprises treating the surface of the said articles with concentrated hydrochloric acid solution at elevated temperature.

Preferably the treatment with the hydrochloric acid is effected at 90-100 C. The time of treatment depends upon the surface condition of the articles, thus at 90-100" C. it may vary from 5 to 15 minutes.

Under certain circumstances, for example in the case of heavily scaled material, it may be desirable to pretreat the article with a standard pickling solution, for example hydrofluoric acid/nitric acid solution, or with a standard caustic melt descaling bath consisting of molten sodium hydroxide with or without the addition of other constituents, before treatment with the hydrochloric acid.

By way of example, titanium rods to be silver-plated were immersed for 5-15 minutes in boiling commercial hydrochloric acid contained in an electrically heated glass vessel. They were then washed in hot water, rinsed in cold water, and thereupon transferred immediately to a standard plating bath containing silver nitrate, cyanide and potassium carbonate.

The method of the invention is particularly useful for the pretreatment of titanium surfaces which are to be electroplated, but it may also be used with advantage in cases Where an adherent coating of a metal is required to be applied by methods other than electrodeposition.

One application in which use of the method in accordance with the invention is of considerable benefit is in the cold drawing of titanium or titanium base alloy rod and wire. The effect of the high coeflicient of friction between titanium and the die materials can be overcome by plating the titanium with a metal having a lower coefiicient of friction as a lubricant-retaining layer, but with the electroplates obtainable on titanium by hitherto available methods it has been difiicult or impossible to obtain a degree of adhesion of the coating that would permit high speed drawing to thin gauges. However after preliminary pickling in boiling concentrated hydrochloric acid titanium rod can be plated with a suitable metal from conventional plating baths to give firmly adherent coatings enabling the drawing of fine gauge wire with greater ease and at far higher speed than hitherto possible.

I claim:

1. Method of surface treatment of titanium or titanium base alloy articles prior to deposition of a coating metal thereon, which comprises treating the surface of the said articles with concentrated hydrochloric acid solution at a temperature between C. and the boiling point of said solution.

2. Method in accordance with temperature is 90100 C.

3. Method in accordance with claim 1 in which the article is pretreated with a pickling bath of hydro-fluoric acid/nitric acid solution before treatment with the hydrochloric acid.

4. Method in accordance with claim 1 in which the article is pretreated with a descaling bath of molten sodium hydroxide before treatment with the hydrochloric acid.

5. Method in accordance with claim 1 in which the time of treatment is between 5 and 15 minutes.

potassium claim 1, in which the References Cited in the file of this patent UNITED STATES PATENTS 2,697,051 Mellgren Dec. 14, 1954

Claims (1)

1. METHOD OF SURFACE TREATMENT OF TITANIUM OF TITANIUM BASE ALLOY ARTICLES PRIOR TO DEPOSITION OF A COATING METAL THEREON, WHICH COMPRISES TREATING THE SURFACE OF THE SAID ARTICLES WITH CONCENTRATED HYDROCHLORIC ACID SOLUTION AT A TEMPERATURE BETWEEN 90* C. AND THE BOILING POINT OF SAID SOLUTION
US45871054 1953-10-03 1954-09-27 Surface treatment of titanium or Expired - Lifetime US2734837A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB336483X 1953-10-03
GB27794/53A GB758013A (en) 1953-10-03 1954-09-22 Improvements in or relating to the surface treatment of titanium or titanium base alloys
GB220954X 1954-09-22

Publications (1)

Publication Number Publication Date
US2734837A true US2734837A (en) 1956-02-14

Family

ID=27258088

Family Applications (2)

Application Number Title Priority Date Filing Date
US45871054 Expired - Lifetime US2734837A (en) 1953-10-03 1954-09-27 Surface treatment of titanium or
US459794A Expired - Lifetime US2949600A (en) 1953-10-03 1954-10-01 Automatic control systems, especially for automatic machine tools

Family Applications After (1)

Application Number Title Priority Date Filing Date
US459794A Expired - Lifetime US2949600A (en) 1953-10-03 1954-10-01 Automatic control systems, especially for automatic machine tools

Country Status (5)

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US (2) US2734837A (en)
BE (1) BE532416A (en)
CH (2) CH328094A (en)
FR (2) FR1114432A (en)
GB (2) GB796993A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829091A (en) * 1956-06-04 1958-04-01 Menasco Mfg Company Method for electroplating titanium
US2856333A (en) * 1955-06-28 1958-10-14 Tiarco Corp Electroplating
US2938841A (en) * 1956-04-13 1960-05-31 Olin Mathieson Preparation of zirconium for cold working
US2974021A (en) * 1957-02-08 1961-03-07 Borowik Albert Process and composition for chemically treating titanium and its alloys
US3007780A (en) * 1958-03-20 1961-11-07 Titanium Metals Corp Titanium etching
US3278404A (en) * 1957-07-17 1966-10-11 Ici Ltd Method and apparatus for cathodic protection
US3297552A (en) * 1963-02-25 1967-01-10 Gisser Henry Method of making a titanium piece having good anti-wear, anti-galling, antiseizure and anti-friction properties
US4804422A (en) * 1986-02-06 1989-02-14 U.S. Philips Corporation Method of purifying quartz sand
US5660640A (en) * 1995-06-16 1997-08-26 Joray Corporation Method of removing sputter deposition from components of vacuum deposition equipment
US6261637B1 (en) * 1995-12-15 2001-07-17 Enthone-Omi, Inc. Use of palladium immersion deposition to selectively initiate electroless plating on Ti and W alloys for wafer fabrication
US6884542B1 (en) * 2002-05-13 2005-04-26 Zinc Matrix Power, Inc. Method for treating titanium to electroplating

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB871941A (en) * 1959-04-17 1961-07-05 Ici Ltd Improvements in or relating to the surface treatment of titanium or titanium base alloy
US3208040A (en) * 1961-03-14 1965-09-21 Powers & Eaton Ind Inc Line-casting machine
US3246315A (en) * 1961-10-06 1966-04-12 Ibm Read only memory
US3278810A (en) * 1963-02-26 1966-10-11 Gen Electric Relay switching circuit utilizing an enabling voltage source
AT278106B (en) * 1968-02-09 1970-01-26 Siemens Ag Switching matrix threshold
US3641326A (en) * 1968-11-22 1972-02-08 Buhr Machine Tool Co Circuit for and method of multiplexing for monitoring a plurality of separate machine tools
JPS5916443B2 (en) * 1976-02-06 1984-04-16 Sony Corp
JPH0332247B2 (en) * 1980-04-30 1991-05-10 Nippon Electric Co
US4322254A (en) * 1980-09-22 1982-03-30 Uop Inc. Regeneration of electrical conductivity of metallic surfaces

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697051A (en) * 1952-09-17 1954-12-14 Nat Lead Co Treatment of titanium metal surfaces

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE647724C (en) * 1937-07-10 Siemens Ag Signal means having inputs and Rueckstellung from the transmitter
US584463A (en) * 1897-06-15 Electric signal
US2682814A (en) * 1948-01-14 1954-07-06 Graphic Arts Res Foundation In Photocomposing apparatus
US2696600A (en) * 1950-11-30 1954-12-07 Rca Corp Combinatorial information-storage network
US2685084A (en) * 1951-04-03 1954-07-27 Us Army Digital decoder
US2738504A (en) * 1951-08-18 1956-03-13 Gen Precision Lab Inc Digital number converter
US2676289A (en) * 1951-11-02 1954-04-20 Collins Radio Co Shaft positioning mechanism for binary code operation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697051A (en) * 1952-09-17 1954-12-14 Nat Lead Co Treatment of titanium metal surfaces

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856333A (en) * 1955-06-28 1958-10-14 Tiarco Corp Electroplating
US2938841A (en) * 1956-04-13 1960-05-31 Olin Mathieson Preparation of zirconium for cold working
US2829091A (en) * 1956-06-04 1958-04-01 Menasco Mfg Company Method for electroplating titanium
US2974021A (en) * 1957-02-08 1961-03-07 Borowik Albert Process and composition for chemically treating titanium and its alloys
US3278404A (en) * 1957-07-17 1966-10-11 Ici Ltd Method and apparatus for cathodic protection
US3007780A (en) * 1958-03-20 1961-11-07 Titanium Metals Corp Titanium etching
US3297552A (en) * 1963-02-25 1967-01-10 Gisser Henry Method of making a titanium piece having good anti-wear, anti-galling, antiseizure and anti-friction properties
US4804422A (en) * 1986-02-06 1989-02-14 U.S. Philips Corporation Method of purifying quartz sand
US5660640A (en) * 1995-06-16 1997-08-26 Joray Corporation Method of removing sputter deposition from components of vacuum deposition equipment
US6261637B1 (en) * 1995-12-15 2001-07-17 Enthone-Omi, Inc. Use of palladium immersion deposition to selectively initiate electroless plating on Ti and W alloys for wafer fabrication
US6884542B1 (en) * 2002-05-13 2005-04-26 Zinc Matrix Power, Inc. Method for treating titanium to electroplating

Also Published As

Publication number Publication date
US2949600A (en) 1960-08-16
CH328094A (en) 1958-02-28
FR1109701A (en) 1956-02-01
GB758013A (en) 1956-09-26
BE532416A (en) 1958-02-14
GB796993A (en) 1958-06-25
CH336483A (en) 1959-02-28
FR1114432A (en) 1956-04-12

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