SU714221A1 - Method of determining cohesion of coatings - Google Patents
Method of determining cohesion of coatings Download PDFInfo
- Publication number
- SU714221A1 SU714221A1 SU762429022A SU2429022A SU714221A1 SU 714221 A1 SU714221 A1 SU 714221A1 SU 762429022 A SU762429022 A SU 762429022A SU 2429022 A SU2429022 A SU 2429022A SU 714221 A1 SU714221 A1 SU 714221A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- coatings
- samples
- determining
- plane
- cohesion
- Prior art date
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
.---.- i . Изобретение относитс к испытани м ма.териалов, в частности к способам опр делени когезионнрй прочности покрытий Наиболее близким по технической. сущности и достиг аемому результату к изобретению вл етс способ определени когезионной прочности покрытий, заключающийс в том, что образцы в виде основы с нанесенным на нее покрытием закрепл ют в зажимах испытательного устройства, нагружают изгибом, фиксИ- руют момент по влени трещин в покрььти х и суд т о прочносги покрытий по величине их деформаций p-j . Недостатком известного способа его низка точность, поскольку н . процесс зарождени трещин вли ет текучесть металла основы на границе раздела покрытие-основа.. Цель изобретени повышение точности способа. .Указанна цель достигаетс тем, что одновременно подвергают изгибу четное количество одинаковых образцов, разме- щенных таким образом, что поверхности раздела покрытие-юснова всех образцов лежат в одной плоскости, причем основы образцов располагают но разные стороны от этой плоскости так, что суммарные площади их сечений по обе стороны плоскости одинаковы. На фиг. 1 изображена нагружени образцов; на фиг. 2 - разрез А-А фиг. Ij на фиг« 3 разрез Б-Б фиг. 1. Предложенный способ осуществл етс следующим образом. Образцы в виде основ 1-4 (образцов может быть любое четное количество) с нанесенным на них в рабочей части покрытием 5-8 закрепл ют в зажимах 9 и 10 с гнездами дл установки образцов таким образом, что поверхности раздела покрытие-основа всех образцов лежат в одной плоскости ОО, причем основы образцов располагают по разные стороны этой плоскости так, что суммарные площа,ди их сечений по обе стороны плоскости одинаковы, т.е. суммар-. --- .- i. The invention relates to testing materials, in particular, to methods for determining the cohesive strength of coatings. The closest to the technical. The essence and achievement of the result of the invention is a method for determining the cohesive strength of coatings, which consists in the fact that the samples in the form of a base coated with it are fixed in the clamps of the testing device, loaded with a bend, fix the moment of cracking in judging by the strengths of coatings by the magnitude of their deformations pj. The disadvantage of this method is its low accuracy, because n. The crack initiation process is influenced by the fluidity of the base metal at the coating-base interface. The aim of the invention is to improve the accuracy of the method. The stated purpose is achieved by simultaneously bending an even number of identical samples, placed in such a way that the surface of the section of the coating-base again of all samples lie in the same plane, and the bases of the samples have different sides of this plane so that the total areas of them The sections on both sides of the plane are the same. FIG. 1 shows the loading of the samples; in fig. 2 - section A-A of FIG. Ij in FIG. 3, section BB, FIG. 1. The proposed method is carried out as follows. Samples in the form of bases 1-4 (samples can be any even number) with a coating 5-8 applied to them in the working part are fixed in clamps 9 and 10 with sockets for mounting the samples in such a way that the interface of the coating base of all samples lie in the same plane OO, and the bases of the samples are located on opposite sides of this plane so that the total areas, di their sections on both sides of the plane are the same, i.e. total-
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762429022A SU714221A1 (en) | 1976-12-14 | 1976-12-14 | Method of determining cohesion of coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762429022A SU714221A1 (en) | 1976-12-14 | 1976-12-14 | Method of determining cohesion of coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU714221A1 true SU714221A1 (en) | 1980-02-05 |
Family
ID=20686284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762429022A SU714221A1 (en) | 1976-12-14 | 1976-12-14 | Method of determining cohesion of coatings |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU714221A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2843633A1 (en) * | 2002-08-13 | 2004-02-20 | Centre Nat Rech Scient | System for pure bending test, subjects two mutually identical items from a common specimen to antagonistic bending loads which are optionally alternating |
-
1976
- 1976-12-14 SU SU762429022A patent/SU714221A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2843633A1 (en) * | 2002-08-13 | 2004-02-20 | Centre Nat Rech Scient | System for pure bending test, subjects two mutually identical items from a common specimen to antagonistic bending loads which are optionally alternating |
| WO2004017047A3 (en) * | 2002-08-13 | 2004-04-01 | Centre Nat Recherche | Method, device and machine for pure bending test optionally alternating |
| US7017423B2 (en) | 2002-08-13 | 2006-03-28 | Centre National De La Recherche Scientifique (Cnrs) | Method, device and machine for pure bending test optionally alternating |
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