Archive

Aviation materials and tecnologes №1, 2010

L.L. Krasnov, Z.V. Kirina

Materials providing thermal protection of structural elements during their short-term and long-term operation at the temperature of 260°C

The work covers the research of properties of the heat-proof paste. The paste consists of semi-products of paste and hardener. The produced paste is applied onto the surface with a brush or a spatula. The article includes the data on physical and thermophysical properties of VTI-3 material. The special attention is dedicated to researching of thermophysical properties of fire-proof paste

Keywords: heat-proof pastes

Reference List

  1. Система теплозащиты многоразового космического корабля «Спейс Шаттл»: Обзор по материалам иностранной печати /Под общей редакции Г.Е. Лозино-Лозинского. М.: ЦАГИ. 1981. ч. 1. 1983. С. 2-22.
  2. Гофин М.Я. Жаростойкие и теплозащитные конструкции многоразовых аэродинамических аппаратов. М.: ЗАО «ТФ МИР». 2003. С. 10-30; 198-217.
  3. Материал Thermal Coat //Техника молодежи. 2006. №5.
  4. Экспресс-информация по материалам отечественной и зарубежной печати. М.: ВИАМ. 2002. №3.

I.A. Treninkov, A.A. Alekseev, S.N. Polyakov

Method of determination of residual stress in monocrystals of nickel superalloys using diffractometer of wide application with Cu Kβ-radiation

Presented here is the method of determination of residual stresses separately in γ and γ´ phases of monocrystals of nickel superalloys of complex composition using non-destructive x-ray method (at the same time the periods of lattices of these phases are independently determined).

Keywords: monocrystal, stress, X-ray

Reference List

  1. Монокристаллы никелевых жаропрочных сплавов /Р.Е. Шалин, И.Л. Светлов, Е.Б. Качанов и др. М.: Машиностроение. 1997. 336 с.
  2. Экспериментальная механика: В 2-х кн.: Кн. 2. Пер. с англ. /Под ред. А. Кобаяси. М.: Мир. 1990. 552 с.
  3. Епишин А.И., Линк Т., Брюкнер У., Феделих Б. Остаточные напряжения в дендритной структуре монокристаллов никелевых жаропрочных сплавов //Физика металлов и металловедение. 2005. Т. 100. № 2. С. 104-112.
  4. Brown L.M. Back-stresses, image stresses, and work-hardening //Acta Met. 1973. v. 21. № 7. Р. 879-885.
  5. Лурье А.И. Теория упругости. М.: Наука. 1970. 940 с.

S.S. Solntsev, V.A. Rozenenkova, N.A. Mironova, V.S. Kaskov

Comprehensive system of beryllium oxidation protection

The work deals with the development of reliable beryllium protection system against oxidation and its toxic oxides sublimation during the high-temperature heating. The results of research on oxidation kinetics of beryllium with no coating, with passivating film, and complex coating at the temperature of heating up to 900°С during 50 hours are included. The effectiveness of application of complex coating consisting of passivating layer and heat-resistant coating of SiO2-B2O3-R2O is shown.

Keywords: beryllium protection system, passivating film, protective heat-resistant coating, oxidation kinetics, synthesis, temperature resistance, thermal linear expansion coefficient

Reference List

  1. Бериллий. Наука и технология. /Пер. с англ. под ред. Г.Ф. Тихинского, И.И. Папирова. М.: Металлургия. 1984. 624 с.
  2. Фридляндер И.Н., Яценко К.П. Бериллиевые сплавы - перспективное направление аэрокосмического материаловедения //Авиационные материалы и технологии. М.: ВИАМ. 2000. С. 3-6.
  3. Солнцев С.С. Защитные технологические покрытия и тугоплавкие эмали. М.: Машиностроение. 1984. С. 12-29.
  4. Солнцев С.С., Розененкова В.А. Защитные технологические покрытия //Международный журнал техника и технология силикатов. 2005. №1-2. С. 23-33.

N.E. Uvarova, D.V. Graschenkov, N.E. Isaeva, L.A. Orlova, P.D. Sarkisov

High-temperature radio-transparent materials: today and tomorrow

The work presents an overview of radio-transparent materials which are widely applied both in Russia and abroad. The perspective materials of this kind are described, as well as the developmental work that is currently done. The projection of further development of radio-transparent materials is included.

Keywords: radio-transparent materials, glass-ceramic materials, pyroceramics, ceramics

Reference List

  1. Красюк В.Н. Бортовые антенны гиперзвуковых летательных аппаратов: учеб. пособие. СПб. СПбГААП. 1994. 216 с.
  2. Гуртовник И.Г. и др. Радиопрозрачные изделия из стеклопластиков. М.: Мир. 2003. 363 с.
  3. Thermal Expansion of Some Glasses in the System MgO-Al2O3-SiO2 by Hummel and Reid //Journal of the American Ceramic Society. 1951.V. 34. № 10.
  4. Gilde G., Patel P., Hubbard C., Pothier B., Hynes T., Croft W., Wells J. SiON low dielectric constant ceramic nanocomposite: Pat. 5677252 US, Int.Cl.6 C 04 B 35/96.US. The United States of America as represented by the Secretary of the Army. 1996.
  5. Братухин А.Г. и др. Новые конструкции и функциональные материалы и возможности их более широкого применения. СПб.: Политехника. 1992.
  6. Inna G.T., Curtis A.M., Deborah A.H., Anh H.L. Electromagnetic window: Pat. 5573986 US, Int.Cl.6 C 04 B 35/584. US The United States of America as represented by the Secretary of the Navy. 1996.

V.A. Bogatov, T.S. Trigub, I.V. Mekalina, M.K. Aizatulina

Evaluation of performance characteristics of new VOS-1 and VOS-2 heat-resistant organic glasses

The organic glasses are applied for the production of airplane cockpit window parts. New polymer structured organic glasses of VOS-1 and VOS-2 brands developed in VIAM in cooperation with Scientific Research Institute of Polymers are operable at the short-term one-sided heating up to temperatures of 160-200°С due to high temperature-resistance.
New testing methods developed in VIAM are applied for the research of operability and key characteristics of new organic glasses.

Keywords: organic glasses, airplane cockpit windows, structured glasses, temperature-resistance, cracking-resistance, operability

Reference List

  1. Гудимов М.М., Перов Б.В. Органическое стекло. М.: Химия. 1981. 215 с.
  2. Акрилатное стекло: блочное, сшитое, двухосно-ориентированное: пат. WL 5.1416 (Германия) опубл. DIN. 1992. Р. 1-7.
  3. Тригуб Т.С., Мекалина И.В., Горелов Ю.П., Шалагинова И.А. Органическое стекло для высокоскоростной авиации //Авиационная промышленность. 2007. №1. С. 39.
  4. Аржаков М.С., Луковкин Г.М., Аржаков С.А. О природе термостимулируемой низкотемпературной релаксации деформации полимерных стекол //ДАН. 1999. Т. 369. №5. С. 629-631.

S.S. Solntsev, V.V. Shvagireva, N.V. Isaeva, G.A. Solovieva

Reinforced heat-resistant glass-enamels for combustion chambers of gas-turbine engines

The research was executed on the influence of reinforcement of glass-enamel coatings with inorganic fibers on their properties.
The research results on the fundamental possibility of production of reinforced coatings with homogeneous temperature- stable structure and high thermo-mechanical properties are included.

Keywords: glass-enamel coating, quartz fiber, reinforcement, structure, phase structure, thermo-mechanical properties

Reference List

  1. Солнцев С.С. Защитные технологические покрытия и тугоплавкие эмали. М.: Машиностроение. 1984. С. 197-220.
  2. Способ изготовления стеклянного покрытия, содержащего неорганические волокна: пат. 6025380 Япония. СОЗс 14/00. 1982.

L.V. Semenova, E.K. Kondrashov

VL-18 modified bromine-epoxy varnish for protection of polymer composite materials

Functional varnish-and-paint coatings are used for the protection of items of polymer composite materials (PCMs) from environmental factors, moisture, chemical agents, combustive and lubricating materials, biological factors. The application of modified bromine-epoxy oligomers in varnish-and-paint compositions allows to reduce significantly water absorption and vapour permeability of coatings. The developed VL-18 epoxy varnish has four-five times reduced water absorption and vapour permeability properties as compared to EP-730 varnish, at the same time having high adhesive, physico-mechanical, and protective properties of varnish-and-paint coatings.

Keywords: water absorption, varnish-and-paint coatings, adhesion

Reference List

  1. Чеботаревский В.В., Кондрашов Э.К. Технология лакокрасочных покрытий в машиностроении. М.: Машиностроение. 1978. 295 с.
  2. Рейтлингер С.А. Проницаемость полимерных материалов. М.: Химия. 1974. 270 с.
  3. Патент 2006342965 JP B 05 D 7/24 Nylok Corp (приор. US), опубл. 21.12.2006.
  4. Патент 6.015.872 США (приоритет-Япония), опубл. 2000.
  5. Защитное покрытие: пат. 2232176 Рос. Федерация; опубл. 10.07.2004.