SU68833A1 - Method for determining the thickness of tin coatings - Google Patents

Method for determining the thickness of tin coatings

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Publication number
SU68833A1
SU68833A1 SU50368A SU50368A SU68833A1 SU 68833 A1 SU68833 A1 SU 68833A1 SU 50368 A SU50368 A SU 50368A SU 50368 A SU50368 A SU 50368A SU 68833 A1 SU68833 A1 SU 68833A1
Authority
SU
USSR - Soviet Union
Prior art keywords
thickness
determining
solution
tin coatings
coating
Prior art date
Application number
SU50368A
Other languages
Russian (ru)
Inventor
М.И. Зильберфарб
Л.М. Штейнберг
Original Assignee
М.И. Зильберфарб
Л.М. Штейнберг
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 М.И. Зильберфарб, Л.М. Штейнберг filed Critical М.И. Зильберфарб
Priority to SU50368A priority Critical patent/SU68833A1/en
Application granted granted Critical
Publication of SU68833A1 publication Critical patent/SU68833A1/en

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Description

Известные химические способы определени  местной толщины металлических покрытий занимают много времени и не обладают достаточной точностью.The known chemical methods for determining the local thickness of metallic coatings take a long time and do not have sufficient accuracy.

Предлагаетс  способ определени  толщины покрытий методом струи, который заключаетс  в том, что участок покрыти  раствор етс  раствором , падающим на поверхность металла в виде струи через капилл р из бюретки. Толщина покрыти  определ етс  продолжительностью растворени  или объемом раствора, затраченного на растворение покрыти .A method is proposed for determining the thickness of coatings by the jet method, which consists in dissolving a portion of the coating with a solution falling on the metal surface in the form of a jet through a capillary from a burette. The thickness of the coating is determined by the duration of the dissolution or the volume of solution spent on the dissolution of the coating.

Дл  предлагаемого способа определени  толщины олов нных покрытий методом струи примен ют раствор , содержащий 15 г/л хлорного железа, 30 г/л сернокислой меди и 60 мл/л однонормальной сол ной кислоты. Толщину олов нных покрытий определ ют следующим образом. Дл  «освежениЯ)) поверхности открывают на мгновение кран бюретки и сразу протирают поверхность покрыти , бывшую под струей, затем вторично открывают кран бюретки и закрывают его после по влени  под струей бурого п тна контактной медиFor the proposed method of determining the thickness of tin coatings using a jet method, a solution containing 15 g / l of ferric chloride, 30 g / l of copper sulfate and 60 ml / l of 1 normal hydrochloric acid is used. The thickness of the tin coatings is determined as follows. To “refresh”)), the surfaces open for a moment the burette tap and immediately wipe the surface of the coating that was under the stream, then open the burette tap again and close it after it appears under the stream of brown copper

на олове. П тно стирают фильтровальной бумагой и продолжают действие струи до по влени  нестираемого блест щего  ркорозового п тнышка меди.on tin. The cloth is rubbed off with filter paper and the jet continues until a non-erasable brilliant rozorous copper speck appears.

Необходимый объем раствора и продолжительность действи  струи дл  сн ти  покрыти  толщиной в 1 микрон при разных температурах приводитс  ниже в таблице.The required volume of solution and the duration of the jet to remove the coating with a thickness of 1 micron at different temperatures are given in the table below.

продолжительность действи  струи дл  сн ти  покрыти  толщиной в микронthe duration of the jet to remove the coating thickness of microns

(Состав раствора: хлор нее железо-15 г/л, сернокисла  медь -30 г/л, сол на  кислота однонормальна  - 60 мл/л)(The composition of the solution: iron chlorine-15 g / l, copper sulfate -30 g / l, hydrochloric acid mononormal - 60 ml / l)

Точность определени  предлагаемым раствором составл ет ± 20%,The accuracy of the determination with the proposed solution is ± 20%,

217217

Этот раствор можно примен ть предпочтительно к накрыти м на стальных , медных и латунных издели х толщиной выше 5 иикрон. Конец растворени  покрыти  очень четкий.This solution can be applied preferably to covers of steel, copper and brass products with a thickness of more than 5 mm. The end of the dissolution of the coating is very clear.

Предмет изобретени Subject invention

}. Способ определени  толщины олов ннь х покрытий методом стрз/и,}. The method for determining the thickness of tin coatings by the sp / s method,

отличающийс  тем, что примен ют раствор, содержащий хлорное железо, сернокислую медь и сол ную кислоту.characterized in that a solution containing ferric chloride, copper sulfate and hydrochloric acid is used.

2. Прием выполнени  способа по п. 1, отличающийс  тем, что раствор содержит 15 хлорного железа, 30 г/л сернокислой меди и 60 мл1л 1 N-ной сол ной кислоты.2. Acceptance of the method according to claim 1, characterized in that the solution contains 15 ferric chloride, 30 g / l of copper sulfate and 60 ml of 1 N hydrochloric acid.

SU50368A 1945-06-22 1945-06-22 Method for determining the thickness of tin coatings SU68833A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU50368A SU68833A1 (en) 1945-06-22 1945-06-22 Method for determining the thickness of tin coatings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU50368A SU68833A1 (en) 1945-06-22 1945-06-22 Method for determining the thickness of tin coatings

Publications (1)

Publication Number Publication Date
SU68833A1 true SU68833A1 (en) 1946-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU50368A SU68833A1 (en) 1945-06-22 1945-06-22 Method for determining the thickness of tin coatings

Country Status (1)

Country Link
SU (1) SU68833A1 (en)

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