SU1208497A1 - Method of determining cohesive strength of back-up coatings - Google Patents
Method of determining cohesive strength of back-up coatings Download PDFInfo
- Publication number
- SU1208497A1 SU1208497A1 SU833662225A SU3662225A SU1208497A1 SU 1208497 A1 SU1208497 A1 SU 1208497A1 SU 833662225 A SU833662225 A SU 833662225A SU 3662225 A SU3662225 A SU 3662225A SU 1208497 A1 SU1208497 A1 SU 1208497A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- substrate
- pin
- coating
- gap
- tin
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 6
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 7
- 229910000679 solder Inorganic materials 0.000 claims abstract description 4
- 239000000155 melt Substances 0.000 claims description 2
- 238000005219 brazing Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Изобретение позвол ет-повысить точность определени прочности сцеплени покрыти с подложкой за счет предотвращени попадани наносимого покрыти в зазор между подложкой и штифтом, установленным в ее отверстии при размещении в зазоре заполнител в виде припо , который образуют при пайке штифта с подложкой оловом, и удалении его из зазора расплавлением перед испытанием . При этом в момент нанесени покрыти на поверхность подложки и штифта оловом исключены перемещени штифта относительно подложки , а при расплавлении олово, остава сь в зазоре, служит смазкой, уменьша трение штифта о подложку при отрьше штифта от покрыти . 1 ил. i (Л ю о 00 4 СО The invention makes it possible to increase the accuracy of determining the adhesion strength of a coating with a substrate by preventing the applied coating from entering the gap between the substrate and the pin installed in its hole when placed in the gap of the filler in the form of solder, which is formed when soldering the pin to the substrate with tin, and removing it from the melting gap before testing. At the same time, at the moment of coating the substrate and the pin with a tin, no movement of the pin relative to the substrate is excluded, and when melted, tin, remaining in the gap, serves as a lubricant, reducing the friction of the pin against the substrate when removing the pin from the coating. 1 il. i (L o o 00 4 CO
Description
11eleven
Изобретение относитс к испытательной технике, а именно к способам определени прочности сцеплени покрытий с подложками.The invention relates to a testing technique, and specifically to methods for determining the adhesion strength of coatings to substrates.
Цель изобретени - повышение точ ности определени прочности сцеплени покрыти с подложкой.The purpose of the invention is to improve the accuracy of determining the adhesion strength of a coating with a substrate.
На чертеже изображена схема устройства дл реализации предлс1гаемо- го способа.The drawing shows a diagram of the device for implementing the proposed method.
Устройство содержит подложку 1 с отверстием, штифт 2, установленный в отверстии с зазором заподлицо с поверхно стью подложки 1, опорную шайбу 3 дл размещени подложки 1, основание 4, размещенный в основании 4 сепаратор 5 с шариками, взаимодействующий с шайбой 3, и нагревтель 6, установленный на шайбе 3 с возможностью охвата подложки 1. The device comprises a substrate 1 with a hole, a pin 2 mounted in a hole with a gap flush with the surface of the substrate 1, a support washer 3 for accommodating the substrate 1, a base 4, a separator 5 with balls placed in the base 4, interacting with the washer 3, and a heater 6 mounted on the washer 3 with the possibility of coverage of the substrate 1.
Способ осуществл етс следующим образом,The method is carried out as follows.
В зазоре между подложкой 1 и штифтом 2 размещают заполнитель 7 в качестве которого используют при- пой олова. Это происходит при пайке штифта 2 с подложкой 1 оловом;. При этом исключено перемещение штифта 2 от перекосов благодар жесткому закреплению его оловом. После этого на поверхность подложки 1 и штифта 2 нанос т испытуемое покрытие 8 и довЪд т его до отверждени . Покрытие 8 нанос т газопламенным напылением . Заполнитель 7 в зазоре между подложкой 1 и штифтом 2 предотвраща ет попадание испытуемого покрыти 8 в зазор, так как тепло частиц наносимого покрыти 8 не успевает расплавл ть припой заполнител 7, После отверждени покрыти 8 заполнитель 7 расплавл ют и прикладывают к штифту 2 нагрузку до отрыва его о покрыти 8а При этом расплав припо олова благодар силам поверхност- ного нат жени остаетс в зазоре между штифтом 2 и подложкой 1 и выполн ет роль смазки, котора .уменьшает трение между штифтом 2 и подложкой f,, Нагрузка, приложенна кIn the gap between the substrate 1 and the pin 2, a filler 7 is placed for which a solder of tin is used. This occurs when soldering the pin 2 with the substrate 1 tin ;. At the same time, the movement of the pin 2 from distortions is prevented due to its rigid fixing with tin. Thereafter, the test coating 8 is applied to the surface of the substrate 1 and the pin 2 and finished to curing. The coating 8 is applied by flame spraying. The filler 7 in the gap between the substrate 1 and the pin 2 prevents the test coating 8 from entering the gap, since the heat of the particles of the applied coating 8 does not have time to melt the filler solder 7. After the coating 8 has cured, the filler 7 melts and applies a load to the pin 2 to detach This is due to surface tension forces remaining in the gap between the pin 2 and the substrate 1 and acts as a lubricant, which reduces the friction between the pin 2 and the substrate f ,, the load applied to
7272
штифту, направлена только на отрыв последнего от покрыти 8, Измер ют величину отрывающей нагрузки и определ ют прочность сцеплени покрыти pin, is directed only to the separation of the latter from the coating 8, measure the magnitude of the tearing load and determine the adhesion strength of the coating
8с подложкой 1 по известной формуле .8c substrate 1 by the known formula.
Пример. Подложку, штифт и опорную шайбу изготавливают из стали 45 с твердостью в нормализованно состо нии HRC 32-36. Диаметр штифта и отверстие в подложке выбирают рав Hbw 2 мм. Штифт устанавливают в отверстии подложки с зазором, после чего производ т пайку штифта к подложке оловом. Поверхность подложки и штифта шлифуют и нанос т на общую поверхность испытуемое покрытие напып:ением порошка типа Р 6 М 5 (быстрорежуща сталь) фракции 40 - 60 мкм толщиной 0,2 мм. Подложку со штифтом и покрытием устанавливают в опорной шайбе и размещают под покрытием подогреватель и довод т олово до расплавлени . Прикладывают к штифту отрывающую нагрузку , котора составл ет 22 кгс, и определ ют расчетом прочность сцеплени , котора составл ет 7 кгс/ммExample. The substrate, pin and support washer are made of steel 45 with a hardness in the normalized state of HRC 32-36. The diameter of the pin and the hole in the substrate is chosen equal to Hbw 2 mm. The pin is placed in the hole of the substrate with a gap, after which the pin is soldered to the substrate with tin. The surface of the substrate and the pin are ground and applied to the total surface of the test coating by powdering with a powder of type P 6 M 5 (high-speed steel) with a fraction of 40–60 µm with a thickness of 0.2 mm. The substrate with the pin and the coating is placed in the support washer and the heater is placed under the coating and the tin is brought to melt. A tearing load is applied to the pin, which is 22 kgf, and the adhesion strength is calculated by the calculation, which is 7 kgf / mm
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833662225A SU1208497A1 (en) | 1983-08-17 | 1983-08-17 | Method of determining cohesive strength of back-up coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833662225A SU1208497A1 (en) | 1983-08-17 | 1983-08-17 | Method of determining cohesive strength of back-up coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1208497A1 true SU1208497A1 (en) | 1986-01-30 |
Family
ID=21089006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833662225A SU1208497A1 (en) | 1983-08-17 | 1983-08-17 | Method of determining cohesive strength of back-up coatings |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1208497A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2478530A (en) * | 2010-03-08 | 2011-09-14 | Rolls Royce Plc | Apparatus and method of testing the adhesion strength and/or cohesive strength of a coating |
-
1983
- 1983-08-17 SU SU833662225A patent/SU1208497A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент GB № 1267954, кл. G 1 S, 1969. Авторское свидетельство СССР № 945760, кл. G 01 N 19/04, 1981. * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2478530A (en) * | 2010-03-08 | 2011-09-14 | Rolls Royce Plc | Apparatus and method of testing the adhesion strength and/or cohesive strength of a coating |
| GB2478530B (en) * | 2010-03-08 | 2012-04-18 | Rolls Royce Plc | An apparatus and a method of testing the adhesion strength and/or cohesive strength of a coating |
| EP2365315A3 (en) * | 2010-03-08 | 2013-01-02 | Rolls-Royce plc | An apparatus and a method of testing the adhesion strength and/or cohesive strength of a coating |
| US8677813B2 (en) | 2010-03-08 | 2014-03-25 | Rolls-Royce Plc | Apparatus and a method of testing the adhesion strength and/or cohesive strength of a coating |
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