GB928454A - Improvements in and relating to the chemical polishing of beryllium - Google Patents

Improvements in and relating to the chemical polishing of beryllium

Info

Publication number
GB928454A
GB928454A GB3909958A GB3909958A GB928454A GB 928454 A GB928454 A GB 928454A GB 3909958 A GB3909958 A GB 3909958A GB 3909958 A GB3909958 A GB 3909958A GB 928454 A GB928454 A GB 928454A
Authority
GB
United Kingdom
Prior art keywords
seconds
beryllium
relating
chemical polishing
volume
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.)
Expired
Application number
GB3909958A
Inventor
Alan Edward Bottom
Arthur Ince
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.)
CA Parsons and Co Ltd
Original Assignee
CA Parsons and Co Ltd
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 CA Parsons and Co Ltd filed Critical CA Parsons and Co Ltd
Priority to GB3909958A priority Critical patent/GB928454A/en
Publication of GB928454A publication Critical patent/GB928454A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F3/00—Brightening metals by chemical means
    • C23F3/02—Light metals
    • C23F3/03—Light metals with acidic solutions

Abstract

Beryllium, which may be of commercial purity containing up to 4% of impurities, is chemically polished by means of a solution containing in percentage by volume: .Orthophosphoric acid (S.G. 1.75).65-80 .Nitric acid (S.G. 1.42).0- 5 .Water.15-30 Treatment may be carried out at a temperature between 80 DEG C and the boiling point of the solution for about 30 seconds. In an exemplified process polishing is carried out in two distinct stages, a 10% sulphuric acid etch for 5 seconds at 70-80 DEG C. being interposed. After polishing the surfaces may be passivated by immersion for 15 seconds in a mixture of equal parts by volume of water and nitric acid (S.G. 1.42).
GB3909958A 1958-12-03 1958-12-03 Improvements in and relating to the chemical polishing of beryllium Expired GB928454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3909958A GB928454A (en) 1958-12-03 1958-12-03 Improvements in and relating to the chemical polishing of beryllium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3909958A GB928454A (en) 1958-12-03 1958-12-03 Improvements in and relating to the chemical polishing of beryllium

Publications (1)

Publication Number Publication Date
GB928454A true GB928454A (en) 1963-06-12

Family

ID=10407627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3909958A Expired GB928454A (en) 1958-12-03 1958-12-03 Improvements in and relating to the chemical polishing of beryllium

Country Status (1)

Country Link
GB (1) GB928454A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271578A (en) * 1992-09-17 1994-04-20 Rieger Franz Metallveredelung Pretreatment of light metals with phosphoric acid; electroless deposition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271578A (en) * 1992-09-17 1994-04-20 Rieger Franz Metallveredelung Pretreatment of light metals with phosphoric acid; electroless deposition
GB2271578B (en) * 1992-09-17 1996-09-18 Rieger Franz Metallveredelung Bath for the pre-treatment of light metals,process therefor and articles produced

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