摘要:
According to prior art, structural errors in substrates in epitactic crystal growth are often carried over from the substrate on which the new material is to be deposited. This leads to a reduction in mechanical properties. According to the method, an intermediate layer is deposited prior to the deposition of epitactic material. Said intermediate layer prevents structural errors in the substrate from being carried over to the newly filled area.
摘要:
The invention relates to a material composition that is used for producing a coating for a component, especially a turbine component, which is made of a metallic basic material, i.e. a metal or a metal alloy. Said material composition comprises a matrix material for forming a basic coating matrix and at least one filler for adjusting desired coating proportions or coating characteristics. The matrix material can be provided especially with basic glass ceramic properties. The inventive material composition is characterized in that the matrix material and/or the filler contains nanoparticles.
摘要:
Electrolytic methods are used to treat large external surfaces. There is described a method for internally coating through-holes of a wall, wherein an electrolyte flows through the through-hole during the treatment and deposits material on the respective inner surface. A single electrode is being used for at least two through-holes.
摘要:
Operationally-stressed components are often returned to use by means of an acid treatment. The duration during which the component remains in the acid is conventionally fixed at a standard value, such that individual stresses are not taken into account. According to the invention, layers may be removed from a component whereby a voltage is at least repeatedly applied to the component, causing a current to flow, the time course of which represents the status of the process of layer removal and which is used to decide the ending or interruption of the acid treatment
摘要:
A process is intended to allow simple and particularly reliable electrolyte generation and conditioning from metal-containing used electrolytes and/or used process solutions and/or pulverulent metal wastes. For this purpose, waste products (a, b) containing metal ions from metal surface treatment processes are to be treated by producing and/or using a metal ion mixed solution (m), replacing anions contained in the metal ion mixed solution (m) with anions selected for an intended use selected and selectively removing metal ions which are categorized as unsuitable for the intended use selected from the metal ion mixed solution (v) prepared in this way.
摘要:
This invention relates to an electrolytic process for the deposition of a graduated layer on a substrate. The process includes depositing a composite material having a first constituent and a second constituent forming a graduated layer on a substrate, introducing the substrate into an electrolyte for a period of time, varying the fist and second constituents of the electrolyte during the period of time to achieve the graduated layer, and using a current/voltage pulse for the electrolytic deposition such that an optimized deposition of the constituents occurs.
摘要:
The lifespan of a layer system at high temperatures is determined by the diffusion of single elements between the substrate and the layers on the substrate. A diffusion inhibiting layer according to the invention with an adapted aluminum content which lies between the aluminum content of the substrate and the aluminum content of the bonding or corrosion protective layer prevents the diffusion of aluminum and raises therefore the lifespan of the layer system.
摘要:
Cracks are conventionally difficult to clean which often leads to damage to other regions of the component for cleaning. According to the invention, a plasma cleaning method is used, whereby a pressure and/or a separation of an electrode to the component are varied, in order to achieve a plasma cleaning in the crack.
摘要:
Components which are subject to operating loads can often be passed for refurbishment by means of an acid treatment. The time for which the components remain in the acid has hitherto been determined empirically, which means that individual loads are not taken into account. The process according to the invention for the surface treatment of a component proposes that at least repeatedly a measurement voltage be applied to the component, resulting in the flow of a current, the time profile of which represents the state of the surface treatment and is used to decide upon when to terminate or interrupt the acid treatment.
摘要:
Components comprising corrosion products are often reused, in which case the corrosion product has to be removed. According to the prior art, this takes a very long time since the reaction times with the corrosion product are often very long. According to the invention, the corrosion product is pretreated in order to produce a larger attackable surface area, so that the corrosion product can be removed more quickly.