SU446565A1 - Metal coating method - Google Patents

Metal coating method

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Publication number
SU446565A1
SU446565A1 SU1767996A SU1767996A SU446565A1 SU 446565 A1 SU446565 A1 SU 446565A1 SU 1767996 A SU1767996 A SU 1767996A SU 1767996 A SU1767996 A SU 1767996A SU 446565 A1 SU446565 A1 SU 446565A1
Authority
SU
USSR - Soviet Union
Prior art keywords
coating method
metal coating
heated
thermal decomposition
organometallic compound
Prior art date
Application number
SU1767996A
Other languages
Russian (ru)
Inventor
Юрий Васильевич Желтов
Original Assignee
Предприятие П/Я А-7755
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 Предприятие П/Я А-7755 filed Critical Предприятие П/Я А-7755
Priority to SU1767996A priority Critical patent/SU446565A1/en
Application granted granted Critical
Publication of SU446565A1 publication Critical patent/SU446565A1/en

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Description

Изобретение относитс  к области нанесени  металлических покрытий в газовой фазе. Известен способ нанесени  металлических покрытий термическим разложением ларов металлоорганического соединени  на нагретой подложке. По предлагаемому способу металлоорганическое соединение при его исиарении нагревают до температуры, превышающей на 5- 10°С температуру начала его терморазложени . Это позвол ет интенсифицировать процесс . Дл  сохранени  равномерности кипени  вещества в него подают аргон под давлением 0,3-0,4 мм рт. ст. Образующиес  газообразные продукты разложени  способствуют повышению количества паров металлооргапического соединени , поступающих к покрываемой поверхности, что интенсифипирует процесс . В этих услови х количество сан-систых выделений на стенках иснарител  незначительно . Получающеес  покрытие отличаетс  хорошей адгезией с подложкой и незпачптельным содержанием несв занного углерода. Пример. Дл  -получени  хромового нокрыти  на виутренпей поверхности трубки диаметром 6,5 мм последнюю нагревают в вакууме до 450°С. Жидкое хромоорганическое соединение - бисэтилбепзолхром нагревают до тем пературы 235-245°С, при которой начинаетс  его терморазложение. Образующиес  газообразные продукты разложени  интенсифицируют испарение металлоорганического соединени  и перенос т его пары к покрываемой поверхности . Внутри трубки на ее стенках пары разлагаютс  с образованием хромового покрыти , нрочно сцепленного с основой. Дл  обеспечени  равномерного кипени  жидкого металлооргаинческого соединени  в испаритель подают аргон под давлением 0,3-0,4 мм рт. ст. Потери бисэтилбензолхрома за счет разложени  па стенках иснарител  составл ют менее 0,1%. Производительность процесса повышаетс  в несколько раз. Предмет изобретени  Способ нанесени  металлических покрыгий термическим разложением паров металлоорганического соединени  па нагретой подложке , отличающийс  тем, что, с целью интенсификации процесса, металлоорганическое соединение при его испарении нагревают до температуры, превышающей на 5-10°С температуру начала его терморазложени .The invention relates to the field of metal coating in the gas phase. There is a known method of applying metallic coatings by thermal decomposition of lars of an organometallic compound on a heated substrate. According to the proposed method, when it is isoparted, the organometallic compound is heated to a temperature that is 5-10 ° C higher than the temperature of its thermal decomposition. This allows the process to be intensified. In order to maintain the boiling uniformity of the substance, argon is fed to it under a pressure of 0.3-0.4 mm Hg. Art. The resulting gaseous decomposition products contribute to an increase in the amount of metal orgapic compound vapor entering the surface to be coated, which intensifies the process. Under these conditions, the amount of SAN discharges on the walls of the inner layer is insignificant. The resultant coating is characterized by good adhesion to the substrate and a non-patch content of unbound carbon. Example. In order to obtain a chrome nocrypt on the surface of a tube with a diameter of 6.5 mm, the latter is heated in vacuum to 450 ° C. The liquid organo-chromium compound, bisethylbepsolchrome, is heated to a temperature of 235-245 ° C at which its thermal decomposition begins. The resulting gaseous decomposition products intensify the evaporation of the organometallic compound and transfer its vapors to the surface to be coated. Inside the tube on its walls, the vapors decompose with the formation of a chromium coating, tentatively linked to the substrate. In order to ensure uniform boiling of the liquid metal-organic compound, argon is fed to the evaporator under a pressure of 0.3-0.4 mm Hg. Art. The loss of bisethylbenzene chromium due to decomposition of the vapor to the wall of the present substance is less than 0.1%. The productivity of the process is increased several times. The subject of the invention. The method of applying metal coatings by thermal decomposition of the vapors of an organometallic compound on a heated substrate, characterized in that, in order to intensify the process, the organometallic compound is heated to its temperature at the beginning of its thermal decomposition when it evaporates.

SU1767996A 1972-04-04 1972-04-04 Metal coating method SU446565A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1767996A SU446565A1 (en) 1972-04-04 1972-04-04 Metal coating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1767996A SU446565A1 (en) 1972-04-04 1972-04-04 Metal coating method

Publications (1)

Publication Number Publication Date
SU446565A1 true SU446565A1 (en) 1974-10-15

Family

ID=20509185

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1767996A SU446565A1 (en) 1972-04-04 1972-04-04 Metal coating method

Country Status (1)

Country Link
SU (1) SU446565A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008249219B2 (en) * 2008-10-24 2016-04-14 Ronald Hall Conduit laying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008249219B2 (en) * 2008-10-24 2016-04-14 Ronald Hall Conduit laying machine

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