SU136584A1 - Method for cathode etching of metal thin sections - Google Patents
Method for cathode etching of metal thin sectionsInfo
- Publication number
- SU136584A1 SU136584A1 SU678278A SU678278A SU136584A1 SU 136584 A1 SU136584 A1 SU 136584A1 SU 678278 A SU678278 A SU 678278A SU 678278 A SU678278 A SU 678278A SU 136584 A1 SU136584 A1 SU 136584A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- thin sections
- cathode
- metal thin
- etching
- cathode etching
- Prior art date
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Description
Известны спОСс;б э,лектролитического анодкого 7р;шлсч1и некоторых высоколегированных марок стале) не дает возможности вы вить микроструктуру последних из-за их высоко); химической стоикост . Обычно дл -:(Лектролитического травлени металлов примен етс электролит , содержащий H2S04, НС1, NaCl npii плотности тока 7,5-10 а/дм-Предлагаемый способ электролитического катодного травлени металла отличаетс от известных составом электролита и плотностью тока и дает возможность значительно сократ1 ть згем приготовлени шлифов .Known spOS; b e, electrolytic anodic 7p; some high-alloyed steel grades make it impossible to reveal the microstructure of the latter because of their high); chemical stoicost. Usually, an electrolyte containing H2SO4, HC1, NaCl npii current density 7.5-10 A / dm is used for electrolytic etching of metals. The proposed method of electrolytic metal cathodic etching differs from the known composition of the electrolyte and current density and makes it possible to significantly reduce zgm cooking thin sections.
Способ заключаетс в том, что 11олирован -;ый шлиф, вл ющийс катодом, обрабатываетс в элект юлите, состо щем ло объему из 75% HNOj и НоО np)i плотности тока на католе. равно) 150-200 а/дм-. Анодом вл етс пласт)на из нержавеюще) стали. Рассто ние между шли()ом и анодом составл ет 20-30 мм. Продолжительность njiouecca вы влени структуры не превышает 2 минут.The method consists in that the 11-polished - nd section, which is the cathode, is processed in an electrolyte consisting of a volume of 75% HNOj and Noh np) i current density on the cathode. equal to) 150-200 a / dm-. The anode is a layer of stainless steel. The distance between the go () ohm and the anode is 20-30 mm. The duration of the njiouecca structure detection does not exceed 2 minutes.
Обработка производитс на установке дл электролитического иол )ровани и травлен)1 шлифов. Шлиф, закрепленный в зажиме, подключаетс к отрицательному полюсу источн)ша посто нного тока, а пластина )3 нержавеющей стали - к полож)тельному.The treatment is carried out on an electrolytic installation unit and etched) 1 thin sections. The section fixed in the clamp is connected to the negative pole of the direct current source, and the 3 stainless steel plate is connected to the positive pole.
В процессе катод-юй обработки полирован)с;;-о шлифа из-за неод)1нанаковых электрохимических потенциалов разл)-;чных микроучастков его поверхности имеет место избирательное осаждение.металла нз электролита , благодар чему происходит четкое вь влен)1е структуры шлифакатода . Пленка осевшего металла достаточно прочна и не разрушаетс ирп промывке и сушке шлифа перед исследованием его на микроскопе.In the process of cathode processing, it is polished with ;;; o thinned due to neo) 1 nanoscale electrochemical potentials of different) - micro parts of its surface there is selective deposition of metal nz electrolyte, due to which there is a clear revealing of the structure of the thin cathode. The film of the deposited metal is strong enough and the irp is not destroyed by washing and drying the thin section before examining it with a microscope.
Указанный электро,пит обладает также полирующей спосо бносты() дл большинства высоколегированных сталеГ. Это позвол ет перед катодным вы влением структуры провод1 ть -лектрополировку исследуемого щлифа, после чего, м-ен пол рность, зы ьл -ть структуру активной поверхности ииисЬа-катода...- . ,The indicated electromeanite also possesses a polishing method () for most high alloyed steel. This allows, prior to the cathodic detection of the structure, the conduction of the electrolyte of the schlifa under investigation, after which, the polarity is known, the structure of the active surface of the ionisation cathode ...-. ,
№ 136584- 2 . Jj р е д м с т и 3 обретени No. 136584-2. Jj re d m with m and 3 gain
Способ катодного травлени шлифов металлов, отличающийс тем, что, с целью соАращени времени травлени , оно производитс в электролите, coдf:p кaщe t 75% азотной кислоты и 25% воды, при плотности тпка 150-20%а/ л;2.(The method of cathode etching of thin sections of metals, characterized in that, in order to shorten the etching time, it is carried out in an electrolyte, the following: p scale t 75% nitric acid and 25% water, at a density of 150–20% a / l; 2. (
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU678278A SU136584A1 (en) | 1960-09-05 | 1960-09-05 | Method for cathode etching of metal thin sections |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU678278A SU136584A1 (en) | 1960-09-05 | 1960-09-05 | Method for cathode etching of metal thin sections |
Publications (1)
Publication Number | Publication Date |
---|---|
SU136584A1 true SU136584A1 (en) | 1960-11-30 |
Family
ID=48292849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU678278A SU136584A1 (en) | 1960-09-05 | 1960-09-05 | Method for cathode etching of metal thin sections |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU136584A1 (en) |
-
1960
- 1960-09-05 SU SU678278A patent/SU136584A1/en active
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