Assessment of Plasma Enhanced Chemical Vapor Deposition (PECVD) Performance in the Corrosion Protection of Silver Artefacts with Application on a Selected Object / (Record no. 166173)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 06453namaa22004331i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223033223.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 240113s2023 ua a|||f |m|| 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GICUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GICUC |
| Modifying agency | EG-GICUC |
| Description conventions | rda |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | eng |
| -- | ara |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposit |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 739.23 |
| Edition number | 21 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
| Classification number | 739.23 |
| Edition number | 21 |
| 097 ## - Thesis Degree | |
| Thesis Level | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.14.03.Ph.D.2023.Ya.A |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Yasmin Abd El-Moaz Sayed Ahmed |
| Relator term | preparation. |
| 245 12 - TITLE STATEMENT | |
| Title | Assessment of Plasma Enhanced Chemical Vapor Deposition (PECVD) Performance in the Corrosion Protection of Silver Artefacts with Application on a Selected Object / |
| Statement of responsibility, etc. | by Yasmin Abd El-Moaz Sayed Ahmed; under the Supervision of Prof. Dr. Wafaa Anwar Mohamed Soliman, Dr. Mai Mohamed Rifai, Prof. Dr. Nasser El Din Nabawi Morgan. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تقييم أداء ترسيب الأبخرة الكيميائية بتحفيز البلازما فى حماية المقتنيات الفضية من التآكل تطبيقاً على أحد النماذج المختارة |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Date of production, publication, distribution, manufacture, or copyright notice | 2023. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 85 pages : |
| Other physical details | illustrations ; |
| Dimensions | 30 cm. + |
| Accompanying material | CD. |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Source | rdacontent |
| 337 ## - MEDIA TYPE | |
| Media type term | Unmediated |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | volume |
| Source | rdacarrier |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D)-Cairo University, 2023. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Bibliography: pages 66-68. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Tarnishing, or more accurately, corrosion of silver artifacts, is brought on by interactions with the environment. Identification of corrosion products and their generation mechanisms is crucial for the preservation and restoration of silver artifacts. Conservators evaluate an object's conservation status through scientific diagnostic assessment and recomned to monitor or reduce the environment's corrosiveness. Polymer coating systems are frequently employed to safeguard metal by preventing water from passing through the coating and coming into contact with the metal.There is an urgent need to develop new kinds of coatings due to the environmental risks connected to volatile organic compounds from existing polymer coating systems. Furthermore, when a coating is not uniformly applied on the metal substrate or does not have the necessary thickness, and if there are surface defects, such as bubble holes and cracks, air and moisture could penetrate, resulting in pitting or filiform corrosion. Because of these worries, vapor deposition methods like plasma assisted chemical vapor deposition(PECVD) that create environmentally benign coatings have come to light. The organic monomers are vaporized and flow into the deposition chamber during the deposition process. The monomers are broken down into radicals, ions, and electrons when a high-frequency electromagnetic field is introduced to the vaporized gas. These fragments then interact to produce a thin film on the substrate. Plasma polymerized coatings feature higher crosslink densities and superior substrate adherence as compared to conventional polymer coatings. Due to the fact that PECVD does not use standard organic solvents, it is more environmentally friendly and emits significantly fewer VOCs. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | إن عملية تآكل الآثار الفضية والمعروف بشكل أكثر دقة بمصطلح التطويس تحدث بسبب التفاعلات مع البيئية المحيطة , فإنه من منظور الحفاظ على الآثار الفضية وترميمها , فإن تحديد منتجات التآكل وآليات تكوينها لهما أهمية كبيرة , فإنه من خلال الدراسات التشخيصية العلمية فإن القائمون بعمليات الترميم والصيانة يقومون بتقييم حالة الحفظ الموجودفيها الأثر والتقليل من مسببات التآكل. ويمكن حماية الآثار الفضية من مسبببات التآكل عن طريق أحد أنظمة الطلاءاءت المختلفة وتتناول الدراسة تقييم فعالية وأداء الأبخرة الكيميائية بنحفيز البلازما فى ترسيب أنواع منختلفة من الأغشية الرقيقة الشفافة والمعروفة ب Thin film المقاومة للتآكل بغرض حماية أسطح المقتنيات الفضية من التآكل لحمايتها من التغييرات فى الرطوبة ودرجة الحرارة وملوثات الهواء من أجل الحفاظ على مجموعات الآثار الفضية التى تعكس الكثير من القيم الجمالية والتاريخية والفنية والثقافية.<br/>تقترح هذه الدراسة نهجًا جديدًا في الجهود المبذولة لحماية القطع الفضية الآثرية ومعالجة مشكلة الحماية التي تمثل التحدي الأكبر للآثار الفضية حيث تم تطبيق البلازما تحت ظروف ترسيب مختلفة على عينات مكونة من سبيكة الفضة والنحاس وذلك للوصول إلى أفضل ظروف ترسيب مثالية وتمت عملية التقييم لمعرفة مدى كفاءة البلازما فى مدى توفيرها أفضل حماية للأسطح الفضية من خلال الفحص بإستخدام الميكروسكوب الإلكترونى الماسح المزود بوحدة التحليل العنصرى , الفحص بإستخدام ميكروسكوب القوى الذرى, وكذلك تقييم التغيير اللونى للعينات, إستخدام التحليل الطيفى للأشعة تحت الحمراء, وقياس زاوية التلامس للعينات قبل وبعد الترسيب لأفلام الحماية.<br/><br/> |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issues also as CD. |
| 546 ## - LANGUAGE NOTE | |
| Language note | Text in English and abstract in Arabic & English. |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Silver |
| 653 #0 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Chemical vapor deposition |
| -- | Siloxane |
| -- | Thin film |
| -- | Plasma processing |
| -- | Metallic artefacts |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Wafaa Anwar Mohamed Soliman |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mai Mohamed Rifai |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Nasser El Din Nabawi Morgan |
| Relator term | thesis advisor. |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 900 ## - EQUIVALENCE OR CROSS-REFERENCE-PERSONAL NAME [LOCAL, CANADA] | |
| Numeration | 01-01-2023 |
| Titles and other words associated with a name | Wafaa Anwar Mohamed Soliman |
| -- | Mai Mohamed Rifai |
| -- | Nasser El Din Nabawi Morgan |
| Dates associated with a name | Sawsan Darwish |
| -- | Mohamed abu Elfottoh |
| Universities | Cairo University |
| Faculties | Faculty of Archaeology |
| Divisons | Department of Metals Conservation Conservation |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Huda |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Edition | 21 |
| Suppress in OPAC | No |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Not for loan | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.14.03.Ph.D.2023.Ya.A | 01010110087995000 | 13.01.2024 | Thesis |