SU125991A1 - Method of tungsten metal products - Google Patents

Method of tungsten metal products

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Publication number
SU125991A1
SU125991A1 SU635172A SU635172A SU125991A1 SU 125991 A1 SU125991 A1 SU 125991A1 SU 635172 A SU635172 A SU 635172A SU 635172 A SU635172 A SU 635172A SU 125991 A1 SU125991 A1 SU 125991A1
Authority
SU
USSR - Soviet Union
Prior art keywords
metal products
tungsten
tungsten metal
electrolyte
oxides
Prior art date
Application number
SU635172A
Other languages
Russian (ru)
Inventor
А.Т. Васько
Original Assignee
А.Т. Васько
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 А.Т. Васько filed Critical А.Т. Васько
Priority to SU635172A priority Critical patent/SU125991A1/en
Application granted granted Critical
Publication of SU125991A1 publication Critical patent/SU125991A1/en

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Description

Изобретение относитс  к способам нанесени  защитных нокрытий вольфрама на металлические издели .The invention relates to methods for applying protective tungsten covers on metal products.

Известные аналогичные снособы, также предусматривающие нанесение на издели  сло  окислов вольфрама электрохимическим методо 1 и последующее восстановление этих окислов в атмосфере водорода до металлического вольфрама, недостаточно экономичны, так как предусматривают использование дорогосто щих электролитов.Known analogous demolitions, also involving the application of tungsten oxide layers to products by the electrochemical method 1 and the subsequent reduction of these oxides in a hydrogen atmosphere to metallic tungsten, are not sufficiently economical, since they involve the use of expensive electrolytes.

Дл  устранени  этих недостатков предлагаетс  в качестве электролита использовать смесь растворов, содержащих 50-100 г/л борной кислоты и 20-400г/л вольфрамата натри  с добавлением серной кислоты и едкого натра или гидроокиси аммони  до рН 5-12 электролита. При этом э тектролиз ведут при плотности тока 10-250 а/дм- и температу(1р 60-90.To eliminate these drawbacks, it is proposed to use as a electrolyte a mixture of solutions containing 50-100 g / l of boric acid and 20-400 g / l of sodium tungstate with the addition of sulfuric acid and caustic soda or ammonium hydroxide to pH 5-12 of electrolyte. In this case, electrolysis is carried out at a current density of 10-250 a / dm and temperature (1 p 60-90.

Приготовление электролита происходит в следующей последовательности . Отдельно приготовленные растворы борной кислоты и вольфрамата натри  смещивают и добавлением серной кислоты устанавливаетс  величина рН, равна  3. После этого в полученный раствор добавл ют едкий натр или аммиак, устанавлива  рН в пределах 5-12. При электролизе используют анод из платины. Покрытые окислами вольфрама издели  восстанавливают в атмос1фере водорода при 850-950°. После восст-ановлени  поверхность имеет серебристо-белый цвет. Защитный слой вольфрама прочно сцепл етс  с основой. Процесс нанесен1{   покрыти  может быть повторен.Preparation of electrolyte occurs in the following sequence. Separately prepared solutions of boric acid and sodium tungstate are shifted and the pH is set to 3 by addition of sulfuric acid. After that, caustic soda or ammonia is added to the resulting solution, the pH is adjusted to 5-12. When electrolysis using the anode of platinum. The products coated with tungsten oxides are reduced in an atmosphere of hydrogen at 850–950 °. After restoration, the surface has a silvery-white color. The protective tungsten layer adheres firmly to the substrate. The process is applied1 {coating can be repeated.

Предмет изобретени Subject invention

Способ вольфрамировани  металлических изделий с электрохимическим нанесение сло  окислов вольфрама и последующим восстановлением этих окислов в атмосфере водорода до металлического вольфра№ 125991Method of tungsten metal products with electrochemical deposition of a layer of tungsten oxides and subsequent reduction of these oxides in an atmosphere of hydrogen to metallic tungsten No. 125991

ма, отличающийс  тем, что в качестве электролита примен ют смесь растворов, содержащую 50-100 г/л борной кислоты и 20-400 г/л вольфрамата натри  с добавлением серной кислоты и едкого натра или гидроокиси аммони  дО рН 5-12 электролита и электролиз ведут при плотности тока 10-250 а1дм и температуре 60-90.ma, characterized in that the electrolyte used is a mixture of solutions containing 50-100 g / l of boric acid and 20-400 g / l of sodium tungstate with the addition of sulfuric acid and sodium hydroxide or ammonium hydroxide to pH 5-12 electrolyte and electrolysis lead at a current density of 10-250 aldm and a temperature of 60-90.

SU635172A 1959-07-29 1959-07-29 Method of tungsten metal products SU125991A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU635172A SU125991A1 (en) 1959-07-29 1959-07-29 Method of tungsten metal products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU635172A SU125991A1 (en) 1959-07-29 1959-07-29 Method of tungsten metal products

Publications (1)

Publication Number Publication Date
SU125991A1 true SU125991A1 (en) 1959-11-30

Family

ID=48397317

Family Applications (1)

Application Number Title Priority Date Filing Date
SU635172A SU125991A1 (en) 1959-07-29 1959-07-29 Method of tungsten metal products

Country Status (1)

Country Link
SU (1) SU125991A1 (en)

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