Ceramic joining through reactive wetting of alumina with calcium aluminate refractory cements
Compositions in CaO-Al2O3 system have been prepared by gel-to-crystallite conversion method. Reactive powders of 1 : 2, 1 : 1, 2 : 1 and 3 : 1 of CaO and2O3 compositions were obtained by calcining the product at 800–1200°C. Fine grained powders were used as refractory cement for joining alumina cera...
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| Veröffentlicht in: | Bulletin of materials science 2000-08, Vol.23 (4), p.243-248 |
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| creator | Geetha, K. Umarji, A. M. Kutty, T. R. N. |
| description | Compositions in CaO-Al2O3 system have been prepared by gel-to-crystallite conversion method. Reactive powders of 1 : 2, 1 : 1, 2 : 1 and 3 : 1 of CaO and2O3 compositions were obtained by calcining the product at 800–1200°C. Fine grained powders were used as refractory cement for joining alumina ceramics. An optimum temperature of 1450°C for 4 h produced joints of satisfactory strength. The microstructure and X-ray phase analysis of the fractured joint surface clearly indicate reactive wetting of the alumina ceramics. This wetting enhances the joining of alumina substrates and can be attributed to the formation of Ca12Al14O33 liquid phase. The results are explained by using CaO-Al2O3 phase diagram. |
| doi_str_mv | 10.1007/BF02720077 |
| format | Article |
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The results are explained by using CaO-Al2O3 phase diagram.</description><subject>Aluminum oxide</subject><subject>Calcium aluminate</subject><subject>Calcium oxide</subject><subject>Ceramic cements</subject><subject>Ceramics</subject><subject>Composition</subject><subject>Conversion</subject><subject>Crystallites</subject><subject>Joining</subject><subject>Liquid phases</subject><subject>Phase diagrams</subject><subject>Refractory cements</subject><subject>Substrates</subject><subject>Wetting</subject><issn>0250-4707</issn><issn>0973-7669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kU9LAzEQxYMoWKsXP0HwICKsJtn8PWqxKhS86FGWNJttU3Y3Ncla-u1NqSJ48DTDzO8NzHsAnGN0gxESt_dTRATJnTgAI6REWQjO1WHuCUMFFUgcg5MYVwhhRSkegfeJDbpzBq68612_gGkZ_LBYwmC1Se7Two1NabfwDdTt0Llew41LS2h0a9zQ_QyTzZImZJEPW2hsZ_sUT8FRo9toz77rGLxNH14nT8Xs5fF5cjcrTMl4KpRkjJlaKo4xK6VQdUMapbCklhnGsBRCGD63CJGaMsoaYrS0RNbU1qie1-UYXO7vroP_GGxMVeeisW2re-uHWGVPKC8VzuDVvyDmAhNaYk4yevEHXfkh9PmNSkoq8zEpMnS9h0zwMWYDqnVwnQ7bCqNql0j1m0j5BcAvfUk</recordid><startdate>20000801</startdate><enddate>20000801</enddate><creator>Geetha, K.</creator><creator>Umarji, A. 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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; SpringerNature Journals; Indian Academy of Sciences; ProQuest Central UK/Ireland; Free Full-Text Journals in Chemistry; ProQuest Central |
| subjects | Aluminum oxide Calcium aluminate Calcium oxide Ceramic cements Ceramics Composition Conversion Crystallites Joining Liquid phases Phase diagrams Refractory cements Substrates Wetting |
| title | Ceramic joining through reactive wetting of alumina with calcium aluminate refractory cements |
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