RU2002128612A - METHOD OF ELECTROLYTIC OXIDATION FOR PRODUCING CERAMIC COATING ON THE SURFACE OF METAL - Google Patents

METHOD OF ELECTROLYTIC OXIDATION FOR PRODUCING CERAMIC COATING ON THE SURFACE OF METAL

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Publication number
RU2002128612A
RU2002128612A RU2002128612/02A RU2002128612A RU2002128612A RU 2002128612 A RU2002128612 A RU 2002128612A RU 2002128612/02 A RU2002128612/02 A RU 2002128612/02A RU 2002128612 A RU2002128612 A RU 2002128612A RU 2002128612 A RU2002128612 A RU 2002128612A
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Russia
Prior art keywords
changing
signal
value
positive
during
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RU2002128612/02A
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Russian (ru)
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RU2268325C2 (en
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Жак БОВИР
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Жак БОВИР
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Priority claimed from FR0005321A external-priority patent/FR2808291B1/en
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Publication of RU2002128612A publication Critical patent/RU2002128612A/en
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Publication of RU2268325C2 publication Critical patent/RU2268325C2/en

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Claims (12)

1. Электролитический способ плазменного микродугового окисления для получения керамического покрытия на поверхности металла, имеющего полупроводниковые свойства, такого как алюминий, титан, магний, гафний, цирконий и их сплавы, посредством физико-химической реакции преобразования обрабатываемого металла, отличающийся тем, что он состоит из операций погружения металлической заготовки (5), на которую должно быть нанесено покрытие, в электролитическую ванну (3), состоящую из водного раствора гидроксида щелочного металла, например гидроксида натрия или гидроксида калия, и соли щелочного металла и кислородсодержащей кислоты, причем металлическая заготовка образует один из электродов, и наложения на эти электроды напряжения сигнала в целом треугольной формы, то есть сигнала, имеющего по меньшей мере положительный наклон и отрицательный наклон, с коэффициентом формы, который может изменяться в ходе процесса, генерируя ток, который регулируют по интенсивности, форме импульса и соотношению положительной интенсивности и отрицательной интенсивности.1. The electrolytic method of plasma microarc oxidation to obtain a ceramic coating on the surface of a metal having semiconductor properties, such as aluminum, titanium, magnesium, hafnium, zirconium and their alloys, by means of a physicochemical reaction for converting the metal to be treated, characterized in that it consists of operations of immersion of a metal billet (5), which should be coated, in an electrolytic bath (3), consisting of an aqueous solution of alkali metal hydroxide, for example and sodium or potassium hydroxide, and an alkali metal salt and an oxygen-containing acid, the metal billet forming one of the electrodes, and applying to these electrodes the voltage of the signal is generally triangular in shape, that is, a signal having at least a positive slope and a negative slope, with a coefficient forms that can change during the process, generating a current that is regulated in intensity, pulse shape and the ratio of positive intensity and negative intensity. 2. Способ по п.1, отличающийся тем, что его положительный и отрицательный наклоны сигнала напряжения являются приблизительно симметричными.2. The method according to claim 1, characterized in that its positive and negative slopes of the voltage signal are approximately symmetrical. 3. Способ по п.1, отличающийся тем, что положительный и отрицательный наклоны сигнала напряжения являются асимметричными и имеют углы, изменяющиеся в ходе электролиза.3. The method according to claim 1, characterized in that the positive and negative slopes of the voltage signal are asymmetric and have angles that vary during electrolysis. 4. Способ по одному из пп.1-3, отличающийся тем, что он заключается в изменении величины треугольного сигнала напряжения в ходе процесса от 300 до 600 В (Vrms).4. The method according to one of claims 1 to 3, characterized in that it consists in changing the value of the triangular voltage signal during the process from 300 to 600 V (Vrms). 5. Способ по одному из пп.1-4, отличающийся тем, что он заключается в изменении частоты треугольного сигнала в ходе процесса от 100 до 400 Гц.5. The method according to one of claims 1 to 4, characterized in that it consists in changing the frequency of the triangular signal during the process from 100 to 400 Hz. 6. Способ по одному из пп.1-5, отличающийся тем, что он заключается в изменении значения силы тока или фиксировании его независимо от значения напряжения.6. The method according to one of claims 1 to 5, characterized in that it consists in changing the value of the current strength or fixing it regardless of the voltage value. 7. Способ по совокупности пп.1-6, отличающийся тем, что он заключается в независимом изменении в ходе процесса различных параметров, а именно коэффициента формы, значения потенциала, частоты и величины тока.7. The method as set forth in claims 1 to 6, characterized in that it consists in independently changing various parameters during the process, namely, the shape factor, potential value, frequency and current value. 8. Способ по совокупности пп.1-6, отличающийся тем, что он заключается в изменении по меньшей мере некоторых из различных параметров, а именно коэффициента формы, значения потенциала, частоты, величины тока и соотношения UA/IC, одновременно в ходе процесса.8. The method as set forth in claims 1 to 6, characterized in that it consists in changing at least some of the various parameters, namely the shape factor, potential value, frequency, current value and UA / IC ratio, simultaneously during the process. 9. Способ по одному из пп.1-8, отличающийся тем, что он заключается в раздельном регулировании его форм сигнала и значений электрической мощности VI в положительной фазе и/или в отрицательной фазе.9. The method according to one of claims 1 to 8, characterized in that it consists in separately regulating its waveforms and values of the electric power VI in the positive phase and / or in the negative phase. 10. Электронный генератор типа источника тока для осуществления способа согласно одному из пп.1-9, включающий блок (9) для связи с однофазным или трехфазным источником электроэнергии от сети и блок для связи с ванной электролиза, отличающийся тем, что он содержит модуль (10) для преобразования синусоидального сигнала переменного тока, поступающего из сети, в трапецеидальный или пилообразный сигнал; модуль (12) для модификации наклона и коэффициента формы сигнала; модуль (13) для изменения частоты в различных типах цикла; и модуль (14) для управления электрической энергией в соответствии с параметризованной энергией и использованной энергией.10. An electronic generator of a current source type for implementing the method according to one of claims 1 to 9, including a unit (9) for communicating with a single-phase or three-phase electric source from the network and a unit for communicating with the electrolysis bath, characterized in that it contains a module ( 10) for converting a sinusoidal signal of alternating current coming from the network into a trapezoidal or sawtooth signal; module (12) for modifying the slope and waveform coefficient; module (13) for changing the frequency in various types of cycle; and a module (14) for controlling electric energy in accordance with the parameterized energy and the energy used. 11. Генератор по п.10, отличающийся тем, что он включает на выходе изолирующий трансформатор с последовательно подключенными конденсаторами в первичной или вторичной цепи для того, чтобы отфильтровать постоянно токовую составляющую таким образом, чтобы предохранить магнитную цепь от насыщения, в то же время обеспечивая оптимальную безопасность работы в отношении электрической защиты, с присоединением одного из полюсов к земле.11. The generator of claim 10, characterized in that it includes an output transformer with series-connected capacitors in the primary or secondary circuit in order to filter the constant current component in such a way as to protect the magnetic circuit from saturation, while at the same time providing optimum safety of work in relation to electrical protection, with the connection of one of the poles to the ground. 12. Генератор по п.10 или 11, отличающийся тем, что им управляют с помощью процессора типа ПК (8), применяемого для управления различными параметрами в ходе осуществления способа.12. The generator according to claim 10 or 11, characterized in that it is controlled by a processor such as a PC (8) used to control various parameters during the implementation of the method.
RU2002128612/02A 2000-04-26 2001-04-25 Method of electrolytic oxidation for obtaining ceramic coat on surface of metal (versions) RU2268325C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR00/05321 2000-04-26
FR0005321A FR2808291B1 (en) 2000-04-26 2000-04-26 ELECTROLYTIC OXIDATION PROCESS FOR OBTAINING A CERAMIC COATING ON THE SURFACE OF A METAL

Publications (2)

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RU2002128612A true RU2002128612A (en) 2004-05-27
RU2268325C2 RU2268325C2 (en) 2006-01-20

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US (1) US6808613B2 (en)
EP (1) EP1276920B1 (en)
JP (1) JP2003531302A (en)
KR (1) KR100868547B1 (en)
CN (1) CN100482867C (en)
AT (1) ATE517200T1 (en)
AU (1) AU775598B2 (en)
BR (1) BR0110339A (en)
CA (1) CA2405485A1 (en)
FR (1) FR2808291B1 (en)
IL (2) IL152307A0 (en)
RU (1) RU2268325C2 (en)
WO (1) WO2001081658A1 (en)

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