公开(公告)号：US3708350A

公开(公告)日：1973-01-02

申请号：US3708350D

申请日：1970-12-10

申请人： DIAMOND SHAMROCK CORP

发明人： KENNEDY A ,  MALKIN I

IPC分类号： C23C22/83 ,  C23F7/26

CPC分类号： C23C22/83 ,  Y10T428/264 ,  Y10T428/273

摘要： A COMPOSITE COATING PROVIDES ENHANCED CORROSION PROTECTION FOR METAL SUBSTRATES AND CAN MAINTAIN SUBSTRATE ELECTROCONDUCTIVITY, E.G., FOR WELDABILITY. THE UNDERCOATING ON THE SURFACE OF THE SUBSTRATE IS A RESIDUE OBTAINED FROM CURING AN APPLIED CORROSION-RESISTANT, HEXAVALENTCHROMIUM-CONTAINING LIQUID COMPOSITION CONTAINING CHROMIC ACID. THE COATING OVER SUCH RESIDUE RESULTS FROM CURING AN APPLIED TOPCOAT COMPOSITION COMPRISING AN ELECTRICALLY CONDUCTIVE PIGMENT IN A VEHICLE.

公开(公告)号：US3706603A

公开(公告)日：1972-12-19

申请号：US3706603D

申请日：1971-04-12

申请人： ALBRIGHT & WILSON

发明人： VESSEY CLIFFORD A ,  ALBON COLIN ,  HOLKER KENNETH

IPC分类号： C23C22/30 ,  C23C22/74 ,  C23F7/26 ,  C23F11/04 ,  H01B3/02

CPC分类号： C23C22/30 ,  C23C22/74

摘要： THE INVENTION PROVIDES AN AQUEOUS COMPOSITION FOR PROVIDING METALS WITH ELECTRICAL AND/OR CORROSION RESISTANCE HAVING A PH OF 2.0 TO 4.0 AND DISSOLVED OR UNIFORMLY DISPERSED THEREIN: (A) A HEXAVALENT CHROMIUM COMPOUNDS; (B) A TRIVALENT CHROMIUM COMPOUND; (C) A SOLUBLE OR INSOLUBLE COLLOIDALLY DISPERSABLE SILICA AND/OR SILICATE IN A TOTAL AMOUNT OF AT LEAT 0.5 GRAMS PER 100 ML. OF THE COMPOSITION; AND (D) AN ALKALI METAL CATION, THE WEIGHT RATIO OF HEXAVALENT CHROMIUM TO TOTAL CHROMIUM (EACH DETERMINED ON A CRO3 BASIS) BENG BETWEEN 0.5:1 AND 0.75:1, THE TOTAL CHROMIUM CONTENT BEING AT LEAST 0.5 G. CHROMIUM (CALCULATED AS CRO3) PER 100 ML. OF THE COMPOSITION, AND THE WEIGHT RATIO OF HEXAVALENT CHROMIUM (CALCULATED AS CRO3) TO ALKALI METAL (CALCULATED AS THE HYDROXIDE) BEING BETWEEN 5:1 AND 100:1, THE SAID AQUEOUS COMPOSITION BEING FREE FROM REDUCING AGENTS FOR HEXALENT CHROMIUM. THE INVENTION ALSO PROVIDES A METHOD FOR PREPARING CURED COATINGS ON METAL BY APPLYING SAID AQUEOUS COMPOSITION TO A METAL SURFACE AND CURING THEREON.

公开(公告)号：US3660172A

公开(公告)日：1972-05-02

申请号：US3660172D

申请日：1970-08-19

申请人： AMCHEM PROD

发明人： OTTO GEORGE FREED

IPC分类号： C23C22/37 ,  C23C22/77 ,  C23F7/26

CPC分类号： C23C22/77 ,  C23C22/37

摘要： A conversion coating is applied to zinciferous surfaces, thereby enhancing the corrosion resistance and bonding properties of the substrate when a paint or similar siccative organic finish is thereafter applied.

摘要翻译： 将转化涂层施加到含锌表面上，从而当涂覆涂料或类似的有机光洁度后，提高基材的耐腐蚀性和粘合性能。

公开(公告)号：US3652224A

公开(公告)日：1972-03-28

申请号：US3652224D

申请日：1969-12-31

申请人： GEN ELECTRIC

发明人： JOHNSON LYMAN A ,  HENRY MICHAEL F

IPC分类号： G01N21/91 ,  G01N21/16 ,  C23F7/26 ,  G01N21/38

CPC分类号： G01N21/91

摘要： A nondestructive method for detecting cracks in a metal body by selective corrosion of the surface portion within the cracks to enlarge them sufficiently so that they can then be detected by conventional techniques. Specifically, a crack enlarging solution which is an electrolyte containing halide ions is applied to the surface of the body to be tested. The solution is formulated so that it does not corrode the open surface portion of the body but is sufficiently reactive to corrode the surface portion within cracks. A conventional penetrating dye liquid is then applied to the same surface of the metal body and the cracks are detected in a conventional manner.

摘要翻译： 一种用于通过选择性地腐蚀裂纹内的表面部分来检测金属体中的裂纹的非破坏性方法，以充分扩大它们，从而可以通过常规技术检测它们。 具体地说，将含有卤离子的电解质的裂纹扩大溶液施加到待测试体的表面。 该溶液被配制成使得其不会腐蚀身体的开放表面部分，但是具有足够的反应性以在裂纹内腐蚀表面部分。 然后将常规的穿透染料液体施加到金属体的相同表面，并以常规方式检测裂纹。

公开(公告)号：US3630789A

公开(公告)日：1971-12-28

申请号：US3630789D

申请日：1970-04-02

申请人： DU PONT

发明人： DEYRUP ALDEN J

IPC分类号： C23C22/27 ,  C23F7/26

CPC分类号： C23C22/27

摘要： Aqueous solutions having a pH of 1.8 to 5.0 and containing about 0.00001 to 0.02 gram atom per liter of hexavalent chromium and 0.001 to 0.8 gram formula weight per liter of fumaric acid, and the use of such solutions for pretreating base metal substrates at a temperature of about 25* to 100* C. to improve the adhesive bonding to the base metal substrate of a subsequently applied organic polymer coating, particularly a coating of a thermoplastic polymer such as polyethylene. Preferably, the polymer that is bonded to the pretreated substrate has uniformly dispersed therein a finely divided alumina which has a specific surface area of at least 5 square meters per gram and which is substantially free of combined water.

公开(公告)号：US3615892A

公开(公告)日：1971-10-26

申请号：US3615892D

申请日：1968-10-30

申请人： OAKITE PROD INC

发明人： HEINZELMAN EDWARD JR ,  WILLIAMSON TUNIS S

IPC分类号： C23C18/31 ,  C23C22/78 ,  C23F7/26

CPC分类号： C23C18/31 ,  C23C22/78 ,  Y10T428/1266

摘要： This invention relates to the production of a black finish on the surfaces of metals that are electropositive to bismuth, for example, ferrous metals, manganese, and the white metals as aluminum, magnesium, cadmium and zinc. The invention more specifically is that of a method of producing a black finish on the surface of such metal electropositive to bismuth by immersing the metal surface in an acidic solution of a trivalent bismuth salt.

公开(公告)号：US3607452A

公开(公告)日：1971-09-21

申请号：US3607452D

申请日：1968-06-19

申请人： MICHAEL N MAROSI

发明人： MAROSI MICHAEL N

IPC分类号： C23C22/66 ,  C23F7/26

CPC分类号： C23C22/66

摘要： A process for forming a clear, unpigmented colored acryloid plastic protective coating on aluminum surfaces; the composition of materials forming the color coating; and the coated aluminum products of the process.

公开(公告)号：US3565699A

公开(公告)日：1971-02-23

申请号：US3565699D

申请日：1968-12-31

申请人： HOOKER CHEMICAL CORP

发明人： PLAXTON ELMER H

IPC分类号： C23C22/83 ,  C23F7/10 ,  C23F7/14 ,  C23F7/26

CPC分类号： C23C22/83 ,  Y10T428/273

摘要： A METAL COATING PROCESS WHICH COMPRISES APPLYING A PHOSPHATE OR OXALATE CONVERSION COATING COMPOSITION TO A ZINC, ALUMINUM OR FERROUS METAL SURFACE TO FORM A SUBSTANTIALLY DRY, UNIFORM CONVERSION COATING, A PORTION OF WHICH IS WATER-SOLUBLE. A NEWTRALIZING FIXING OR IMMOBILIZING COATING COMPOSITION IS THEN APPLIED WHICH REACTS OUT THE WATER-SOLUBLE PORTION OF THE CONVERSION COATING TO PRODUCE WATER-INSOLUBLE PHOSPHATES OR OXALATES AND FORMS A SUBSTANTIALLY DRY, UNIFORM COMPOSITE COATING. A HEXAVALENT CHROMIUM-CONTAINING STABILIZING OR PASSIVATING COMPOSITION IS ALSO APPLIED, EITHER IN A SEPARATE COATING STEP OR PREFERABLY BY INCORPORATING THE HEXAVALENT CHROMIUM CONTAINING MATERIAL IN THE FIXING COATING COMPOSITON. PREFERABLY, ALL OF TSHE COATING MATERIALS ARE APPLIED BY "MISTON" TYPE SPRAY APPLICATION.

公开(公告)号：US3556869A

公开(公告)日：1971-01-19

申请号：US3556869D

申请日：1969-07-22

申请人： NIPPON STEEL CORP

发明人： OKADA HIDEYA ,  MATSUDA SHOZO ,  OHBU MISAO ,  TAMURA HIDEO

IPC分类号： C23C22/24 ,  C23F7/26

CPC分类号： C23C22/24

摘要： A METHOD IS PROVIDED FOR SURFACE TREATMENT OF ZINC METAL AND ZINC ALLOYS TO OBTAIN A PRODUCT OF EXCELLENT CORROSION RESISTANCE, PAINT ADHESION PROPERTIES AND APPEARANCE. ACCORDING TO THIS METHOD, THE ARTICLE HAVING THE SURFACE OF ZINC METAL AND ZINC ALLOYS, IS TREATED WITH AN AQUEOUS SOLUTION OF CHROMIC ACID AND COLLOIDAL SILICA.

公开(公告)号：US3459604A

公开(公告)日：1969-08-05

申请号：US3459604D

申请日：1966-04-18

申请人： HOOKER CHEMICAL CORP

发明人： FREEMAN DENNIS BRIAN ,  GILL COLM ANTHONY

IPC分类号： C23C22/46 ,  C23F7/26

CPC分类号： C23C22/46