摘要:
An apparatus for a reactive treatment of the surface of a workpiece, in which a process gas is brought into a chamber and a direct voltage arc discharge is generated in the chamber, the arc discharge is assisted or maintained, respectively by introducing a flow of charged particles. In known treatment methods, plasma generated in the direct voltage arc are generally distributed non-homogeneously in the inner space of the chamber and the area with a density of the plasma which is sufficient for the reactive surface treatment is relatively small. According to the invention this problem is solved in that the distribution of the effect of the treatment of the plasma in the chamber at least along a predetermined plane is set, and specifically by a distribution of openings for the process gas over a given area and/or by a distribution of the arc discharges in the chamber over a given area. The flow of charged particles enters into the chamber via a plurality of distribution openings. By such an arrangement, spatially large plasmas having high densities of ionization and acceptable densities of energy are realized, and it is possible to perform treatment of large surface areas and also treatment processes on objects which are thermally sensitive.
摘要:
The hard coating includes mainly (Al,Cr).sub.2 O.sub.3 crystals and a chrome content higher than 5 at % wherein the (Al, Cr).sub.2 O.sub.3 is a single crystal. The coating is deposited at a temperature lower than 90.degree. C., preferably lower than 500.degree. C. The hard coating is deposited by a CVD or PVD process.
摘要翻译:硬涂层主要包括(Al,Cr)2 O 3晶体和高于5原子%的铬含量,其中(Al,Cr)2 O 3是单晶。 涂层在低于90℃,优选低于500℃的温度下沉积。硬涂层通过CVD或PVD工艺沉积。
摘要:
Coated highly wear-resistant tools have an Me.sup.1.sub.1-x (.alpha..sub.2 Me.sup.2 * .alpha..sub.3 Me.sup.3 * . . . .alpha..sub.n Me.sup.n).sub.x N.sub.u C.sub.v O.sub.w coating, wherein Me.sup.1 is a metal of the chemical group IVb of the periodic system, and Me.sup.2, Me.sup.3, . . . , Me.sup.n are other metals. The values u+v+w=1 and the Me concentration changes at least once continuously over the layer thickness to .alpha..sub.2 Me.sup.2 * .alpha..sub.3 Me.sup.3, . . . .alpha..sub.n Me.sup.n. The value for x is preferably between 0.1 and 0.7, the values for v and/or w can be approximately zero or w
摘要:
For coating workpieces having basic bodies (3), with a ceramic, electrically non-conducting material, during the coating process a pulsating dc voltage is applied to the basic bodies (3) or their holders (36). Preferably the pulse height is changed during vaporization used for the coating process, from high negative values to smaller negative values. A further layer can be applied onto the workpieces coated in this way whereby these work-pieces, due to their excellent corrosion resistance, are suited as pieces of jewelry which can be exposed in particular to ocean water and body perspiration, as rolling bodies in which the use of oil or grease as corrosion protection can be dispensed with, and as separating and cutting tools for organic materials.
摘要:
A metal chalcogenide coating, in particular of molybdenum sulphide, is deposited on a substrate by high speed cathode sputtering. This coating is turbostratic and has an unusually high resistance to wear produced by frictional forces.
摘要:
A process and apparatus for coating at least one workpiece utilizes a target made of an alloy which is substantially a one phase. Coating is achieved by cathodic arc evaporation of the target in an oxygen atmosphere.
摘要:
The invention concerns an apparatus for the plasma assisted physical vapor deposition of coatings onto workpieces and a cathode spot arc evaporator and the form of integration of the evaporator in the coating apparatus.
摘要:
The invention relates to a method for depositing a diamond coating on a workpiece, for instance a drawing die or a tool punch, whereby a reactive plasma supported coating method is used. According to the invention the generation of the plasma is made by a direct current discharge, whereby additionally a flow of charged particles is fed into the discharge gap; according to the invention the workpiece to be coated is positioned in the discharge gap. Due to the inventive design a relatively long discharge gap can be used, such that also large surface areas can be coated; the coating is made at a location of the highest homogeneity and density of the plasma. By means of the invention a method is provided which can be controlled regarding financial expenses and in a reliable manner and which is suitable for large surface area coating.
摘要:
A method and apparatus for a reactive treatment of the surface of a workpiece, in which a process gas is brought into a chamber and a direct voltage arc discharge is generated in the chamber, the arc discharge is assisted or maintained, respectively by a coupling in of a flow of charged particles. In known treatment methods plasma generated in the direct voltage arc are generally distributed inhomogeneously in the inner space of the chamber and the area with a density of the plasma which is sufficient for the reactive surface treatment is relatively small. According to the invention this problem is solved in that the distribution of the effect of the treatment of the plasma in the chamber at least along a predetermined plane is set, and specifically by a setting of an areal distribution of the process gas inlet and/or setting of an areal distribution of the arc discharges in the chamber, in that the flow of charged particles is coupled into the chamber via a plurality of distribution openings. By such means, spatially large plasmas having high densities of ionization and acceptable densities of energy can be realized, such that it is possible to perform on the one hand treatment of large surface areas and on the other hand also treatment processes on objects which are thermally sensitive.
摘要:
A method and apparatus for controlling a ratio .gamma.=x/y, for the coating of a work piece with a layer F.sub.x G.sub.y, using plasma-enhanced reactive deposition processes, includes changing the rate at which a solid material is vaporized and also controlling the atmosphere within the vacuum chamber of the apparatus.
摘要翻译:用于使用等离子体增强反应沉积方法来控制用于涂覆具有层FxGy的工件的比率γ= x / y的方法和装置包括改变固体材料蒸发的速率并且还控制气氛 在设备的真空室内。