Accession Number:

AD0701547

Title:

THE MECHANISM OF JOINT FORMATION IN SOLID-STATE WELDING OF ALUMINUM OXIDE CERAMICS WITH NIOBIUM (O Mekhanizme Obrazovaniya Soedineniya pri Svarke v Tverdom Sostoyanii Keramiki iz Okisi Alyuminiya s Niobiem),

Personal Author(s):

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Report Date:

1970-02-17

Abstract:

The kinetics of the process of joint formation in solid-state welding of Al2O3 ceramic to niobium was investigated. Calculations of the time of development of physical contact in welding Al2O3 and niobium, based on the conditions necessary to obtain a required creep rate, showed that total physical contact is formed with a temperature of 1500C, a pressure of 1.5 kgsqmm and a time of 1000 sec. Thermodynamic calculations of the interaction of aluminum oxide with niobium pentoxide indicate the possible formation of a chemical bond at 1500C. The possibility of joining Al2O3 ceramic to niobium, using the calculated parameters, was proven by experiment. Author

Supplementary Note:

Trans. of Fizika i Khimiya Obrabotki Materialov (USSR) n3 p123-129 1968, by Richard S. Relac.

Pages:

0014

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0.00MB

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