{"title":"9th international symposium on the reactivity of solids Cracow, Poland, September 1–6, 1980","authors":"","doi":"10.1016/0390-5519(78)90034-0","DOIUrl":"https://doi.org/10.1016/0390-5519(78)90034-0","url":null,"abstract":"","PeriodicalId":100227,"journal":{"name":"Ceramurgia International","volume":"4 4","pages":"Page 178"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-5519(78)90034-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136537817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"How to name an inorganic substance","authors":"","doi":"10.1016/0390-5519(78)90048-0","DOIUrl":"https://doi.org/10.1016/0390-5519(78)90048-0","url":null,"abstract":"","PeriodicalId":100227,"journal":{"name":"Ceramurgia International","volume":"4 4","pages":"Page 181"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-5519(78)90048-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136501980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sintering characteristics of porcelain","authors":"E.M.H. Sallam , A.C.D. Chaklader","doi":"10.1016/0390-5519(78)90029-7","DOIUrl":"10.1016/0390-5519(78)90029-7","url":null,"abstract":"<div><p>Sintering experiments in the temperature range 1050° to 1300°C using a eutectic glass (as present in a triaxial porcelain) and several constituents in porcelain compositions indicate that shrinkage behaviour of porcelain is primarily controlled by the reaction between glass (or felspar) and clay components. An equation to predict the relationship between the relative density change and shrinkage has been developed, which is based on the liquid phase formation on particles and migration of liquid from the neck regions to the void space. The predicted relationship <span><math><mtext>Δ</mtext><mtext>L</mtext><mtext>L</mtext><msub><mi></mi><mn>0</mn></msub><mtext> = </mtext><mtext>4π</mtext><mtext>9β</mtext></math></span><span><math><mtext>(</mtext><mtext>1</mtext><mtext>ϕ</mtext><msub><mi></mi><mn>0</mn></msub><mtext> − </mtext><mtext>1</mtext><mtext>ϕ</mtext><mtext>)</mtext></math></span> (where β is a geometric constant and calculable) fitted the data well. The mechanism of densification appears to change with temperature - initially controlled by reaction then followed by precipitation. The calculated apparent activation energy during the second stage (∼ 60 Kcal/mole) is about half of that obtained by previous workers.</p></div>","PeriodicalId":100227,"journal":{"name":"Ceramurgia International","volume":"4 4","pages":"Pages 151-161"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-5519(78)90029-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89796197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Shimada, K. Kodaira, T. Matsushita , K. Ichijo , R. Maeda
{"title":"Effect of CdO additive on sintering of LiNbO3","authors":"S. Shimada, K. Kodaira, T. Matsushita , K. Ichijo , R. Maeda","doi":"10.1016/0390-5519(78)90031-5","DOIUrl":"10.1016/0390-5519(78)90031-5","url":null,"abstract":"<div><p>The effect of CdO additives on the sintering of LiNbO<sub>3</sub> at 805–1100°C was studied and is discussed on the basis of Kingery's model of initial sintering and cubic grain growth kinetics. The sintering appears to be controlled by the volume diffusion of oxygen ion in both cases. Exaggerated grain growth in pure LiNbO<sub>3</sub> occurs at 1050–1100°C and hinders the attainment of sintered densities higher than 83–87%. Addition of CdO increases the diffusion coefficient of oxygen by about 500 times during initial sintering and causes rapid densification. DTA curves indicated a reaction between CdO and LiNbO<sub>3</sub> at 750–895°C; the second phase thus formed probably hinders exaggerated grain growth.</p></div>","PeriodicalId":100227,"journal":{"name":"Ceramurgia International","volume":"4 4","pages":"Pages 167-171"},"PeriodicalIF":0.0,"publicationDate":"1978-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-5519(78)90031-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76846984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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