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Information × Registration Number 0303U001608, 0102U003301 , R & D reports Title The research and development of the brazing technology of ultrapure corundum ceramics by oxide solders in the system Al2O3-SiO2-MeO (MeO-CaO, MnO, BaO). Section 2. The research of thermomechanical properties of oxide solders and the manufacture of trial lots. popup.stage_title Дослідження та розробка технології паяння високочистої корундової кераміки оксидними припоями у системі Al2O3-SiO2-MeO, ( MeO-CaO, MnO, BaO). Розділ 2. Дослідження термомеханічних властивостей оксидних пропоїв та випуск дослідних партій. Head Krivoruchko P., Registration Date 11-04-2003 Organization The open joint stock company " The Ukrainian research institute of refractories named A.S.Berezhnoy" popup.description2 The research object - oxide solders of MeO-Al2O3-SiO2 system where MeO-CaO, BaO, MnO are used for soldering of ultrapeere corundum ceramics. Work purpose - the study of thermomechanical characteristics of oxide solders in MeO-Al2O3-SiO2 (MeO-CaO, BaO, MnO) for the snbsequent employment during the connection of ceramic elements. Research methods - quarts dilatometer; differential thermal analysis; ultimate strength of the seal during the beuding. Coefficients of linear expousion of 6 compositions of solders were meesured experimentally and their comparision was carried out with computed data obteined acurding to a addidivity formula as well as the converseny of results was revealed. An influence of technological factors - the heating temperature and the holding tinec on the compression strength of seals. It was established that durinf the heating temperature up to 1450 C the strength of seals is increased and for some solders of reaches 270 n/mm2. Diring an increase of the holding time more than 60minutes it leads to the decrease of the seal strength. Using DTA method the tendency of solders to the crystallization during the carry-out of thermal treatment was ascertained. Researched solders can be used products of intricate shope from ultrahigh vacummdence corundum ceramics. On the basis of carried out research the trial lot of soldered metal-ceramic products acording to the contract N 903 was produced where one of solders was used as an adhesion additive of the metallization of coating. For a subsequent explanation of processeses occuring during of ceramics the investigation should be centinued for the purpose of researching processes occuring at between phase boundaty ceremics - oxidie solder as well as structuries of solders characteristics. Product Description popup.authors popup.nrat_date 2020-04-02 Close