Download or read book A Comparison of Chromic Acid and Sulfuric Acid Anodizing written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-09 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of federal and state mandates restricting the use of hexavalent chromium, it was deemed worthwhile to compare the corrosion protection afforded 2219-T87 aluminum alloy by both Type I chromic acid and Type II sulfuric acid anodizing per MIL-A-8625. Corrosion measurements were made on large, flat 2219-T87 aluminum alloy sheet material with an area of 1 cm(exp 2) exposed to a corrosive medium of 3.5-percent sodium chloride at pH 5.5. Both ac electrochemical impedance spectroscopy and the dc polarization resistance techniques were employed. The results clearly indicate that the corrosion protection obtained by Type II sulfuric acid anodizing is superior, and no problems should result by substituting Type II sulfuric acid anodizing for Type I chromic acid anodizing. Danford, M. D. Marshall Space Flight Center NASA-TM-108383, NAS 1.15:108383 ...
Download or read book A Comparison of Chromic Acid and Sulfuric Acid Anodizing written by and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Thin Film Sulfuric Acid Anodizing and Chromic Acid Anodizing Processes written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromic acid anodizing (CAA), a common aluminum pretreatment, forms a thick oxide film which provides protection against environmental degradation.
Download or read book A Comparison of Sulfuric Acid Boric Acid Anodize and Chromic Acid Anodize Processes written by Stephen J. Spadafora and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromic acid anodizing (CAA) is an aluminum surface pretreatment currently used on Navy aircraft and weapon systems. This anodize process forms a thick oxide film which provides protection against environmental degradation. This is particularly important due to the severely corrosive naval aviation operational environment. Chromium VI, however, is a carcinogen and its wide spread use as a corrosion inhibitor in this process is being restricted. The Navy has targeted chromated maintenance operations for reduction of hazardous waste generation. Several alternative candidates have been identified: Phosphoric Acid Anodizing, Boeing Aerospace Corp.'s Boric-Sulfuric Acid Anodize (SBAA) and thin film sulfuric acid anodizing. The Boeing SBAA process was selected for optimization and service demonstration. The Naval Air Warfare Center Aircraft Division Warminster analyzed the performance properties of SBAA and CAA both sealed and unsealed on various substrates with and without standard Navy coatings. Surface pretreatments, Anodic films, Environmentally complaint materials, Organic coatings.
Download or read book A Comparison of Alternatives to Chromic Acid Anodizing Tri Service Committee on Corrosion Proceedings Held in Orlando Florida on June 21 23 1994 written by and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromic acid anodizing (CAA) is an aluminum surface pretreatment currently used on military aircraft and equipment. Chromium VI, present in this process, is a carcinogen and federal, state and local environmental agencies have implemented legislation which restricts the use of this material. The Naval Air Warfare Center Aircraft Division Warminster investigated several alternatives to CAA including: Sulfuric-Boric Acid Anodize, Sulfuric Acid Anodizing, and Phosphoric Acid Anodizing. Physical performance properties of these processes were characterized and as a result of this program, the MIL-A-8625 anodize specification was modified to include some of these alternatives.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Environmental Technology Conference written by Ann F. Whitaker and published by . This book was released on 1995 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Metallurgy of Anodizing Aluminum written by Jude Mary Runge and published by Springer. This book was released on 2018-02-01 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the history of the concepts critical to the discovery and development of aluminum, its alloys and the anodizing process are reviewed to provide a foundation for the challenges, achievements, and understanding of the complex relationship between the aluminum alloy and the reactions that occur during anodic oxidation. Empirical knowledge that has long sustained industrial anodizing is clarified by viewing the process as corrosion science, addressing each element of the anodizing circuit in terms of the Tafel Equation. This innovative approach enables a new level of understanding and engineering control for the mechanisms that occur as the oxide nucleates and grows, developing its characteristic highly ordered structure, which impact the practical function of the anodic aluminum oxide.
Download or read book Circular of the Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1953 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Aluminum Bonding Technology and Data written by J. D. Minford and published by CRC Press. This book was released on 1993-06-16 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reference that offers comprehensive discussions on every important aspect of aluminum bonding for each level of manufacturing from mill finished to deoxidized, conversion coated, anodized, and painted surfaces and provides an extensive, up-to-date review of adhesion science, covering all significa
Download or read book Hybrid Polymer Composite Materials Structure and Chemistry written by Vijay Kumar Thakur and published by Woodhead Publishing. This book was released on 2017-06-03 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid Polymer Composite Materials: Volume 1: Structure and Chemistry presents the latest on these composite materials that can best be described as materials that are comprised of synthetic polymers and biological/inorganic/organic derived constituents. The combination of unique properties that emerge as a consequence of the particular arrangement and interactions between the different constituents provides immense opportunities for advanced material technologies. This series of four volumes brings an interdisciplinary effort to accomplish a more detailed understanding of the interplay between synthesis, structure, characterization, processing, applications, and performance of these advanced materials, with this volume focusing on their structure and chemistry. Provides a clear understanding of the present state-of-the-art and the growing utility of hybrid polymer composite materials Includes contributions from world renowned experts and discusses the combination of different kinds of materials procured from diverse resources Discusses their synthesis, chemistry, processing, fundamental properties, and applications Provides insights on the potential of hybrid polymer composite materials for advanced applications
Download or read book Handbook of Adhesives and Sealants written by Philippe Cognard and published by Elsevier. This book was released on 2005-07-14 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Adhesives and Sealants is the most comprehensive Adhesives and Sealants Handbook ever published, with the cooperation of around 35 authors from all over the world – each one a specialist in their field. It will include 80 chapters dealing with general information, theory of bonding and sealing, design of bonding parts, technical characteristics, chemistry, types of adhesives, application, equipment, controls, standards etc. Industrial applications such as automotive, aeronautics, building and civil engineering, electronics, packaging, wood, furniture, metals, plastics and composites, textiles, footwear etc. Over 1,000 real-life examples illustrate the do's and don'ts of using adhesives Every scientific and technical issue concerning every chemical type in every industry Designed to help solve problems quickly, the content is structured to allow readers to navigate this comprehensive resource in 4 different ways
Download or read book Protective Coatings on Metals written by Francis D. Horigan and published by . This book was released on 1950 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Corrosion Science and Technology written by Mars G. Fontana and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series was organized to provide a forum for review papers in the area of corrosion. The aim of these reviews is to bring certain areas of corrosion science and technology into a sharp focus. The volumes of this series will be published approximately on a yearly basis and will each contain three to five reviews. The articles in each volume will be selected in such a way to be of interest both to the corrosion scientists and the corrosion tech nologists. There is, in fact, a particular aim in juxtaposing these interests because of the importance of mutual interaction and interdisciplinarity so important in corrosion studies. It is hoped that the corrosion scientists in this way may stay abreast of the activities in corrosion technology and vice versa. In this series the term "corrosion" will be used in its very broadest sense. This will include, therefore, not only the degradation of metals in aqueous environment but also what is commonly referred to as "high temperature oxidation. " Further, the plan is to be even more general than these topics; the series will include all solids and all environments. Today, engineering solids include not only metals but glasses, ionic solids, polymeric solids, and composites of these. Environments of interest must be extended to liquid metals, a wide variety of gases, nonaqueous electrolytes, and other nonaqueous liquids.
Download or read book Proceedings of the Congress of the International Council of the Aeronautical Sciences written by International Council of the Aeronautical Sciences. Congress and published by . This book was released on 1980 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economic Evaluation of a Method to Regenerate Waste Chromic Acid sulfuric Acid Etchants written by Deborah A. Spotts and published by . This book was released on 1983 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of Technical Reports written by United States. Dept. of Commerce. Office of Technical Services and published by . This book was released on with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
