Crystallization of anodic Al2O3

✍ Scribed by P. Neufeld; N.K. Nagpaul; R. Ashdown; M. Akbar

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 528 KB
• Volume: 17
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(72)85045-x

✦ Synopsis

Anodic AI,O, films have been crystallized, during growth in the electrolyte, by heating in a vacuum in the electron beam, and by heating in air . A linear shrinkage of approximately 15 per cent was observed during the transition from amorphous to y-A1,0, . A variety of morphologies were found in y-A1,O, crystals, which formed after heating above 800°C. At 1200°C relatively large crystals of a-A1,O s were observed .

Res®€-Des films de AI,O, croissant anodiquement dans I'6lectrolyte ont Bt6 cristallls6s par chauffage dans le vide au moyen d'un faisceau blectronique et par chauffage dans lair . Une contraction lin8aire d'environ 15 % a 616 observee durant le passage de la forme amorphe it A1203-y . Plusieurs vari6tEs morphologiques ont 6t6 trouv6es daps les cristaux de A1,0,-y qui se forment en chauffant au-dessus de 800°C. A 1200°C, on observe des cristaux relativement gros de Al a%-y .