SU1109477A1 - Aqueous solution for etching magnesium alloys - Google Patents

Aqueous solution for etching magnesium alloys Download PDF

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Publication number
SU1109477A1
SU1109477A1 SU823536523A SU3536523A SU1109477A1 SU 1109477 A1 SU1109477 A1 SU 1109477A1 SU 823536523 A SU823536523 A SU 823536523A SU 3536523 A SU3536523 A SU 3536523A SU 1109477 A1 SU1109477 A1 SU 1109477A1
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SU
USSR - Soviet Union
Prior art keywords
etching
magnesium alloys
aqueous solution
inhibitor
sulfuric acid
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SU823536523A
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Russian (ru)
Inventor
Эльвира Васильевна Давыдова
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Предприятие П/Я Р-6585
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Priority to SU823536523A priority Critical patent/SU1109477A1/en
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Publication of SU1109477A1 publication Critical patent/SU1109477A1/en

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    • 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
    • C23FNON-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
    • C23F3/00Brightening metals by chemical means
    • C23F3/02Light metals
    • C23F3/03Light metals with acidic solutions
    • 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
    • C23FNON-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
    • C23F1/00Etching metallic material by chemical means
    • C23F1/10Etching compositions
    • C23F1/14Aqueous compositions
    • C23F1/16Acidic compositions
    • C23F1/22Acidic compositions for etching magnesium or alloys thereof

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

ВОДНЫЙ РАСТВОР ДЛЯ ТРАВЛЕНИЯ МАГНИЕВЫХ СПЛАВОВ, содержащий серную кислоту и ингибитор ПВ-5, отличающийс  тем, что, с целью повышени  равномерности травлени  , и блеска поверхности, он дополнительно содержит ксилолсульфонат натри  при следующем соотношении компонентов : Серна  кислота, (плотность 1,84) мл 8-10 Ингибитор ПВ-5, г 0,1-0,2 Ксилолсульфонат натри , мл20-30 Вода, лДо 1AQUEOUS SOLUTION FOR Etching MAGNESIUM ALLOYS, containing sulfuric acid and a PV-5 inhibitor, characterized in that, in order to increase etching uniformity and surface gloss, it additionally contains sodium xylene sulphonate in the following ratio of components: Sulfuric acid, (density 1.84) ml 8-10 PV-5 inhibitor, g 0.1-0.2 sodium xylene sulphonate, ml 20-30 Water, lDo 1

Description

СО 4CO 4

1 Изобретение относитс  к химическим составам дл  травлени  металла, в частности дл  повышени  класса чис тоты и придани  блеска поверхности магниевых сплавов. Известен вЪдный раствор дл  травлени  магниевых сплавов на основе азотной кислоты с добавкой различных анионоактивных ПАВ, например алкиларилсульфонатов 1 . Однако этот раствор предназначен дл  химического фрезеровани  магниевых сплавов, так как обладает высокой скоростью травлени , и не может быть использован дл  их чистовой с .делки. Наиболее близким к изобретению по технической сущности и достигаемо му результату  вл етс  водный раство дл  травлени  магниевых сплавов, содержащий серную кислоту и ингибитор ПБ-5, предназначенный дл  чистовой отделки магниевых сплавов 1.21, Однако известный раствор не обеспечивает достаточной равномерности травлени , что приводит к местному перетравливанию поверхности, а также образованию на ней травильного пшама Целью изобретени ,  вл етс  повыше ние равномерности травлени , а также блеска поверхности. Поставленна  цель достигаетс  тем что водный раствор дл  травлени  магниевых сплавов, содержащий серную кислоту и ингибитор ПБ-5,дополнительно содержит ксилолсульфонат натри  при следующем соотношении компонентов: 7 Серна  кислота ( плотность 1,84), мл8-10 Ингибитор ПБ-5, г0,1-0,2 Ксилолсульфонат натри , мл20-30 Вода, лДо 1 Вводимый в раствор ксилолсульфонат натри  (СН)2C H SOjNa относитс  к анионоактивным ПАВ и выполн ет в растворе роль смачивател , позвол ющего обеспечить равномерное травление магниевых сплавов. Раствор готов т путем добавлени  в воду при перемешивании серной кислоты, а затем ксилолсульфоната натри  и ингибитора ПБ-5. Процесс травлени  магниевьк сплавов, например фольги, рекомендуетс  осуществл ть после ее обезжиривани  путем обработки в предлагаемом растворе при 15-35°С в течение 0,51 ,0 мин. Результаты испытани  предлагаемого раствора представлены в таблице. Обработке подвергали фольгу из сплава МА2-1 толщиной 120 мкм. Шероховатость поверхности определ ли на профилометре-профилографе типа 201, блеск измер ли при помощи блескометра ФБ-2о Как видно из данных таблицы, использование предлагаемого раствора позвол ет получать равномерную по толщине фольгу с блест щей чистой поверхностью, котора  может быть использована дл  композиционных материалов , получаемых путем диффузионного спекани .  1 The invention relates to chemical compositions for etching a metal, in particular to increase the purity class and brighten the surface of magnesium alloys. A known solution for etching magnesium alloys based on nitric acid with the addition of various anionic surfactants, such as alkylarylsulfonates 1. However, this solution is intended for chemical milling of magnesium alloys, as it has a high etching rate, and cannot be used for finishing them. The closest to the invention to the technical essence and the achieved result is an aqueous solution for etching magnesium alloys containing sulfuric acid and a PB-5 inhibitor, designed for fine finishing magnesium alloys 1.21. However, the known solution does not provide sufficient uniformity of etching, which leads to local etching the surface and also forming pickling on it. The aim of the invention is to increase the etching uniformity as well as the surface gloss. The goal is achieved by the fact that an aqueous solution for etching magnesium alloys containing sulfuric acid and a PB-5 inhibitor also contains sodium xylene sulphonate in the following ratio: 7 Sulfuric acid (density 1.84), ml-10-10 PB-5 inhibitor, r0, 1-0.2 Sodium xylene sulphonate, ml 20-30 Water, LUO 1 Sodium xylene sulphonate (CH) 2C H SOjNa introduced into the solution is an anionic surfactant and acts as a wetting agent in solution, allowing for uniform etching of magnesium alloys. The solution is prepared by adding sulfuric acid to the water with stirring, followed by sodium xylene sulfonate and the inhibitor PB-5. The process of etching magnesium alloys, such as foil, is recommended to be carried out after degreasing it by processing in the proposed solution at 15-35 ° C for 0.51.0 minutes. The results of testing the proposed solution are presented in the table. The processing was subjected to a MA2-1 alloy foil with a thickness of 120 μm. The surface roughness was determined on a profilometer-type profilograph 201, the gloss was measured using an FB-2o gloss meter. As can be seen from the table, using the proposed solution allows to obtain a foil of uniform thickness with a shiny clean surface that can be used for composite materials obtained by diffusion sintering.

Claims (1)

ВОДНЫЙ РАСТВОР ДЛЯ ТРАВЛЕНИЯ МАГНИЕВЫХ СПЛАВОВ, содержащий серную кислоту и ингибитор ПБ-5, отличающийся тем, что, с целью повышения равномерности травления . и блеска поверхности, он дополнительно содержит ксилолсульфонат натрия при следующем соотношении компонентов :AQUEOUS SOLUTION FOR ETCHING MAGNESIUM ALLOYS, containing sulfuric acid and an inhibitor PB-5, characterized in that, in order to increase the etching uniformity. and surface gloss, it additionally contains sodium xylene sulfonate in the following ratio of components: Серная кислота, (плотность 1 ,84) мл 8-10Sulfuric acid, (density 1, 84) ml 8-10 Ингибитор ПБ-5, г 0,1-0,2PB-5 inhibitor, g 0.1-0.2 Ксилолсульфонат натрия, мл 20-30Sodium xylene sulfonate, ml 20-30 Вода, л До 1 fl 1109477Water, l To 1 fl 1109477
SU823536523A 1982-12-30 1982-12-30 Aqueous solution for etching magnesium alloys SU1109477A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU823536523A SU1109477A1 (en) 1982-12-30 1982-12-30 Aqueous solution for etching magnesium alloys

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Application Number Priority Date Filing Date Title
SU823536523A SU1109477A1 (en) 1982-12-30 1982-12-30 Aqueous solution for etching magnesium alloys

Publications (1)

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SU1109477A1 true SU1109477A1 (en) 1984-08-23

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Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1. Патент €ША № 3725158, кл. 156-14, 1973. 2. Дь ков В.Н. Химическое травление отливок из магниевых сплавов. Авиационна промышленность, 1963, № 12, с. 60. *

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