SU578362A1 - Composition for protection of titanium and its alloys against oxidation during heat treatment - Google Patents
Composition for protection of titanium and its alloys against oxidation during heat treatmentInfo
- Publication number
- SU578362A1 SU578362A1 SU7602368910A SU2368910A SU578362A1 SU 578362 A1 SU578362 A1 SU 578362A1 SU 7602368910 A SU7602368910 A SU 7602368910A SU 2368910 A SU2368910 A SU 2368910A SU 578362 A1 SU578362 A1 SU 578362A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- heat treatment
- composition
- titanium
- protection
- during heat
- Prior art date
Links
Landscapes
- ing And Chemical Polishing (AREA)
Description
1one
Изобретение относитс к области металлургии и может быть использовано при нагреве изделий из титана и его сплавов в окислительной атмосфере.The invention relates to the field of metallurgy and can be used when heating products made of titanium and its alloys in an oxidizing atmosphere.
Дл уменьшени окалинообразовани при окислительном нагреве и уменьшени продолжительности последующего травлени на поверхность изделий из титана перед термообработкой нанос т покрыти из солевых составов .To reduce the scaling during oxidative heating and reduce the duration of subsequent etching, salt coatings are applied to the surface of titanium products prior to heat treatment.
Известен солевой состав, состо щий из азотнокислого натри с добавкой углекислого натри 1.The known salt composition is composed of sodium nitrate with the addition of sodium carbonate 1.
Недостатком этого состава вл етс потер защитных свойств уже при 700°С; кроме того , при удалении окалины в кислотном растворе на поверхности издели образуетс п тнистость .The disadvantage of this composition is the loss of protective properties already at 700 ° C; in addition, when removing scale in acidic solution, a stain develops on the surface of the product.
Наиболее близким к предлагаемому изобретению вл етс состав, содержащий едкий натрий и воду 2.Closest to the proposed invention is a composition containing caustic sodium and water 2.
Недостатками этого состава вл етс потер защитных свойств при температуре выше 720°С, результат этого - труднотравима и неравномерна по толпдиие окалина и значительный расход металла ири термообработке.The disadvantages of this composition are the loss of protective properties at temperatures above 720 ° C, the result of which is difficult to apply and uneven in the scale of scale and a significant consumption of metal and heat treatment.
Целью изобретени вл етс повышение защитных свойств покрыти при высокой температуре ., The aim of the invention is to increase the protective properties of the coating at a high temperature.
Это достигаетс тем, что состав, содержащий едкий натрий и воду, дополнительно содержит углекислый магний ири следуюп;ем соотношении комиоиентов, вес. %:This is achieved by the fact that the composition containing caustic sodium and water additionally contains magnesium carbonate and the following: I eat the ratio of comioents, weight. %:
Едкий натрий20-50Caustic Soda 20-50
Углекислый магний2- 5Magnesium carbonate2-5
ВодаОстальноеWaterEverything
Были приготовлены и испытаны составы но известному и предлагаемому способам.Were prepared and tested formulations but known and proposed methods.
Составы, приготовленные ио известному способу ири следующем cooiношении комнонеитов , вес. %:The compositions prepared by the well-known method and the following cooler ratio, weight. %:
И 5And 5
И1I1
7 67 6
Остальное Остальное ОстальноеElse Else Else
Составы, приготовленные по предлагаемому способу при следующем соотношении компонентов , вес. %:The compositions prepared by the proposed method in the following ratio of components, weight. %:
VV
Остальное ОстальноеElse Else
: :/:;r: й дa..:: / :; r: th yes ..
., -.,.1., -.,.one
Образцы размером 20X30X0,2 обрабатывали в растворах указанных составов и затем подвергали термической обработке при 720°С, 750°С, 780°С в течение 30 мин.Samples of size 20X30X0.2 were treated in solutions of these compositions and then subjected to heat treatment at 720 ° C, 750 ° C, 780 ° C for 30 minutes.
Затем образцы травили в 30%-ном растворе азотной кислоты +2% NH4F до полного удалени окалины. Результаты обработки приведены в табл.Then the samples were etched in a 30% solution of nitric acid + 2% NH4F until scale was removed. The results of processing are given in table.
Как видно из приведенных данных, предложенный состав позвол ет уменьшить окисл емость сплава в процессе термообработки, врем травлени сплава после термообработки и потери металла.As can be seen from the above data, the proposed composition allows to reduce the oxidisability of the alloy during the heat treatment process, the etching time of the alloy after heat treatment, and the loss of metal.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7602368910A SU578362A1 (en) | 1976-06-04 | 1976-06-04 | Composition for protection of titanium and its alloys against oxidation during heat treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7602368910A SU578362A1 (en) | 1976-06-04 | 1976-06-04 | Composition for protection of titanium and its alloys against oxidation during heat treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU578362A1 true SU578362A1 (en) | 1977-10-30 |
Family
ID=20664383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7602368910A SU578362A1 (en) | 1976-06-04 | 1976-06-04 | Composition for protection of titanium and its alloys against oxidation during heat treatment |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU578362A1 (en) |
-
1976
- 1976-06-04 SU SU7602368910A patent/SU578362A1/en active
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