High Tc superconducting materials have been receiving great concern as a potential advanced material in packaging technology. Superconductivity and superior heat conductivity may play an important rule in advanced packaging technology in future. However, several engineering problems have to be solved before possible application of these advanced materials. Among them are the mechanical properties of high Tc YBa2Cu3O7-x (YBCO) ceramics. In this paper, toughness improvement of YBCO was investigated by making composite YBCO with Y2BaCuO5 and Ag by the melt powder melt growth (MPMG) process. Ag particles were added to reduce the cracks initiated in the matrix during this process without decreasing the superconducting property of the YBCO compound. Addition of 10 wt% Ag and 20 mol% Y2BaCuO5 yielded a YBCO composite with a KIC of 2.87 MPa√ m and a critical current density (JC) measured by the four-probe method of more than 600 A/cm2.
|Number of pages||7|
|Journal||American Society of Mechanical Engineers, Applied Mechanics Division, AMD|
|Publication status||Published - 1994 Dec 1|
|Event||Proceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA|
Duration: 1994 Nov 6 → 1994 Nov 11
ASJC Scopus subject areas
- Mechanical Engineering