SU624955A1 - Solution for chemical etching of refractory metals - Google Patents

Solution for chemical etching of refractory metals

Info

Publication number
SU624955A1
SU624955A1 SU742067246A SU267246A SU624955A1 SU 624955 A1 SU624955 A1 SU 624955A1 SU 742067246 A SU742067246 A SU 742067246A SU 267246 A SU267246 A SU 267246A SU 624955 A1 SU624955 A1 SU 624955A1
Authority
SU
USSR - Soviet Union
Prior art keywords
solution
acid
chemical etching
refractory metals
etching
Prior art date
Application number
SU742067246A
Other languages
Russian (ru)
Inventor
Валентин Павлович Замчалкин
Михаил Григорьевич Глазунов
Original Assignee
Предприятие П/Я В-2572
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 Предприятие П/Я В-2572 filed Critical Предприятие П/Я В-2572
Priority to SU742067246A priority Critical patent/SU624955A1/en
Application granted granted Critical
Publication of SU624955A1 publication Critical patent/SU624955A1/en

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
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/16—Acidic compositions
    • C23F1/26—Acidic compositions for etching refractory metals

Description

1one

Изобретение относитс  к технологии травлени  металлов, в частности прлучени  деталей химической обработкой, а также подготовки поверхности деталей под различные технологические проueccfcas сварку, пайку, нанесение покрытий и др.The invention relates to the technology of etching metals, in particular, the production of parts by chemical treatment, as well as the preparation of the surface of parts for various technological processes of welding, soldering, coating, etc.

Известен раствор дл  травлени  химически устойчивых металлов, таких как ниобий, цирконий, тантал и ти- тан, и их сплавов, содержащий по 20 вес.% азотной и плавиковой кислот и 60 вес.% воды 1Однако при травлении в этом растворе заготовок с местными углублени ми неравномерность травлени  (All), оцениваема  по замерам толщины издели , превышает 25%, отверсти  получаемых сеток имеют неправильную форму, кроме того, в отдельных местах происходит разрушение перемычек .A known solution for the etching of chemically resistant metals, such as niobium, zirconium, tantalum and titanium, and their alloys, containing 20% by weight of nitric and hydrofluoric acids and 60% by weight of water 1, however, when etching in this solution with preforms The etching irregularity (All), estimated by measuring the thickness of the product, exceeds 25%, the openings of the resulting meshes have an irregular shape, and bridges are also destroyed in certain places.

Целью изобретени   вл етс  обеспечение равномерности травлени  изделий из тугоплавких металлов, преимущественно сплавов ниоби  и циркони .The aim of the invention is to ensure uniform etching of products from refractory metals, mainly niobium and zirconium alloys.

Поставленна  цель достигаетс  введением в известный раствор сол ной кислоты при следующем соотношении компонентов, вес.%:The goal is achieved by introducing into a known solution of hydrochloric acid in the following ratio of components, wt.%:

Азотна  кисло.та22-29Nitric acid. 22-29

Нлавикова  кислота 19-22 Сол на  кислота0,1-0,4Nlavic acid 19-22 Sol on acid 0.1-0.4

ЭодаОстальноеEodaEverything Else

П{ж травлении 100 образце из сплава, вес.%: ниобий 1, цирконий 0,1 различного размера в растворе состава, вес.%:P {W etching 100 sample from an alloy, wt.%: Niobium 1, zirconium 0.1 different size in the solution composition, wt.%:

Азотйй  кислота25Nitric Acid25

Плав1йсова  кислота20,3Plavysov acid

Сол на  кислота0,36Sol on acid 0.36

ВодаОстальноеWaterEverything

получена светла  поверхность образцов без окисленных участков.The surface of the samples without oxidized areas was obtained.

Использование указанного раствора дл  получени  сеток путем травлени  заготовок с местными углублени ми Ь еньшает изменени  толщины готовых сеток ( дЪ ) до 10-15% i от максимального размера и позвол ет получать правильную геометрию отверстий:The use of this solution to obtain grids by etching blanks with local depressions b does not change the thickness of the finished grids (db) to 10-15% i of the maximum size and allows to obtain the correct geometry of the holes:

Claims (1)

Формула изобретени Invention Formula Раствор дл  химического травлени  тугоплавких металлов., преимущественно сплавов ниоби  и циркони , содержгивий азотную, плавиковую кислоты и воду, отличающийс   тем, что, сA solution for chemical etching of refractory metals, mainly niobium and zirconium alloys, containing nitric, hydrofluoric acids and water, characterized in that, with 8624955486249554 целью овеспечени  равномерности тр в-Сол на  кислота0,1-0,4the purpose of ensuring the uniformity of tr in Sol-acid 0.1-0.4 лени / он содержит дополнительно сол -ВодаОстальноеlaziness / it contains additionally salt - Water Else ную кислоту при ;следу1ацем: соотношенииИсточники информации, прин тыеacid at the following: ratio: Sources of information accepted ксикповентов, вес.%:во внимание при экспертизе:xikopentov, wt.%: into account in the examination: .1. Портнов К. И. Тугоплавкие.one. Portnov K. I. High-melting Азотна  кислота22-29металлы в новой технике, М., МирNitric acid22-29metals in the new technology, M., Mir Плавикова  кислота 19-22 1969, с. 97.Hydrofluoric acid 19-22 1969, p. 97.
SU742067246A 1974-10-01 1974-10-01 Solution for chemical etching of refractory metals SU624955A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU742067246A SU624955A1 (en) 1974-10-01 1974-10-01 Solution for chemical etching of refractory metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU742067246A SU624955A1 (en) 1974-10-01 1974-10-01 Solution for chemical etching of refractory metals

Publications (1)

Publication Number Publication Date
SU624955A1 true SU624955A1 (en) 1978-08-11

Family

ID=20436214

Family Applications (1)

Application Number Title Priority Date Filing Date
SU742067246A SU624955A1 (en) 1974-10-01 1974-10-01 Solution for chemical etching of refractory metals

Country Status (1)

Country Link
SU (1) SU624955A1 (en)

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