Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Reinigung und/oder korrosionsschützenden Vorbehandlung einer Vielzahl von Bauteilen in Serie, bei dem die Bauteile der Serie zumindest teilweise zusammengesetzt sind aus verzinktem (ZM) Stahl. Die Bauteile durchlaufen hierfür nach einer Reinigungsstufe und vor einer weiteren Reinigung und/oder korrosionsschützenden Vorbehandlung eine Behandlungsstufe zur Verbesserung der Benetzbarkeit der verzinkten (ZM) Stahloberflächen, in der zumindest die Oberflächen des verzinkten (ZM) Stahls der Bauteile mit einem wässrigen Mittel in Kontakt gebracht werden, das mindestens einen Builder enthält, der ein Salz eines Lewis-Säure-Basen-Paares darstellt, bei dem die Lewis-Säure ausgewählt ist aus Li+, Na+, K+, Ca2+, Mg2+ oder Al3+ und die Lewis-Base ausgewählt ist aus Anionen einer mehrprotonigen Brönstedt-Säure. Die Gesamtkonzentration der Builder in der Behandlungsstufe zur Benetzung liegt bei mindestens 0,4 mol/kg.
Abstract:
La présente invention concerne un procédé de traitement de surface d'un renfort métallique en titane ou en alliage de titane d'une aube réalisée en matériau composite, lequel procédé permettant le retrait sélectif d'un primaire de collage par rapport au renfort en titane ou en alliage de titane.
Abstract:
A metal cleaning process in which the metal is contacted with an alkaline cleaning solution comprising at least 0.1 weight percent surfactant, at least 0.05 weight percent hydrogen peroxide, and an effective amount of at least one sequestrant, for example so as to stabilise the solution during use at 18 DEG C in an inert container prior to use so as that the peroxide concentration decreases by less than 2 percent in 7 days. A preferred sequestrant is sodium diethylene triamine pentamethylene phosphonate, used either per se or in combination with 2,2' dipyridylamine or 1,2'-diaminocyclohexal tetrakis methylene phosphonic acid. The metal may be contacted with the solution for between 1 and 120 minutes at a temperature in the range ambient to 70 DEG C. The metal may be rinsed with water after it has been contacted with the solution and air dried after it has been rinsed. The metal may be contacted with the solution in a metal or plastics cleaning bath which is preferably agitated or stirred, or a thickened solution may be sprayed onto the metal. The solution may be formed from a concentrate by dilution with water.
Abstract:
An aqueous bath for degreasing metals contains 0.5 to 8 g/l of polyoxyethylene alkyl ether with an HLB of 12 to 17 and at least one dissolved alkali metal salt or ammonium salt, contains 1 to 15 points of total alkalinity, and has a pH from 8 to 13. If the bath also contains dispersed conventional Jernstedt salt or insoluble di- or tri- valent metal phosphates with a particle size less than 5 mu m, the surface treated is conditioned for subsequent deposition of high quality zinc phosphate coatings at the same time its is degreased and can be effectively conversion coated by bringing it into contact with a suitable phosphating bath, without any rinsing with water between discontinuing contact with the degreasing bath and effecting contact with the phosphating bath. By this method, conventional degreasing, rinsing, conditioning, and zinc phosphating processes are shortened, cost less, and have less adverse environmental impact.
Abstract translation:用于脱脂金属的水浴包含0.5-8g / l HLB为12-17的聚氧乙烯烷基醚和至少一种溶解的碱金属盐或铵盐,含有1至15个总碱度,并且具有从 如果洗涤液还含有分散的常规杰恩斯泰特盐或粒径小于5微米的不溶性二价或三价金属磷酸盐,则对处理的表面进行调理,以便随后沉积相同的高品质磷酸锌涂层 时间它脱脂,并且可以通过使其与合适的磷酸盐浴接触而被有效地转化涂覆,在不与脱脂浴接触并与磷化浴接触之间不用任何水漂洗。 通过这种方法,常规的脱脂,漂洗,调理和锌磷化处理被缩短,成本更低,并且对环境的不利影响较小。
Abstract:
An ethylenediaminetetraacetic acid or a mono- di- tri- or tetraammonium salt 5 thereof residue cleaning composition removes photoresist and other residue from integrated circuit substrates. The balance of the composition is desirably made up of water, preferably high purity deionized water, or another suitable polar solvent. A process for removing photoresist or other residue from a substrate, such as an integrated circuit semiconductor wafer including titanium metallurgy, comprises contacting the substrate with the composition for a time and at a temperature sufficient to remove the photoresist or other residue from the substrate. Use of the ethylenediaminetetraacetic acid or a mono- di- tri- or tetraammonium salt thereof in the composition and process provides superior residue removal without attacking titanium or other metallurgy, oxide or nitride layers on the substrate.
Abstract:
A two carbon atom linkage alkanolamine compound composition comprises the two carbon atom linkage alkanolamine compound, gallic acid or catechol, and optionally, an aqueous hydroxylamine solution. The balance of the composition is made up of water, preferably high purity deionized water, or another suitable polar solvent. A process for removing photoresist or other residue from a substrate, such as an integrated circuit semiconductor wafer including titanium metallurgy, comprises contacting the substrate with the composition for a time and at a temperature sufficient to remove the photoresist or other residue from the substrate. Use of the two carbon atom linkage alkanolamine compound in the composition and process provides superior residue removal without attacking titanium or other metallurgy, oxide or nitride layers on the substrate.
Abstract:
A composition for removal of chemical residues from metal or dielectric surfaces or for chemical mechanical polishing of a copper surface is an aqueous solution with a pH between about 3.5 and about 7. The composition contains a monofunctional, difunctional or trifunctional organic acid and a buffering amount of a quaternary amine, ammonium hydroxide, hydroxylamine, hydroxylamine salt, hydrazine or hydrazine salt base. A method in accordance with the invention for removal of chemical residues from a metal or dielectric surface comprises contacting the metal or dielectric surface with the above composition for a time sufficient to remove the chemical residues. A method in accordance with the invention for chemical mechanical polishing of a copper surface comprises applying the above composition to the copper surface, and polishing the surface in the presence of the composition.
Abstract:
The disclosure relates to a cleaning composition that aids in the removal of post-etch residues and aluminum-containing material, e.g., aluminum oxide, in the production of semiconductors that utilize an aluminum-containing etch stop layer. The compositions have a high selectivity for post-etch residue and aluminum-containing materials relative to low-k dielectric materials, cobalt-containing materials and other metals on the microelectronic device.