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ArticleName Low temperature materials in the Ba – Pb – Al – B - Si – O/Al2O3 system for co-sintering with noble metal powders
DOI 10.17580/tsm.2018.04.07
ArticleAuthor Pashkov D. A., Pogrebenkov V. M.

National Research Tomsk Polytechnic University, Tomsk, Russia:

D. A. Pashkov, Post-Graduate Student of Engineering School of New Production Technologies, e-mail:
V. M. Pogrebenkov, Professor of N. M. Kizhner Scientific and Education Center


We used the method of liquid-phase sintering at a low-temperature range of 850–900 оC to obtain composite materials in the system Ba – Pb – Al – B – Si – O glass/ -Al2O3 with 20–60% (wt.) of aluminium oxide. The glass was made by fritting from melt at the temperature of 1430 оC with subsequent grinding on a planetary mill (particle size: 3, 5 and 8 microns). After the sintering, glass ceramic characteristics are determined by hydrostatic weighting with vacuumization. The influence of fraction composition of glass in phase composition of sintered compositions was studied by using X-ray phase analysis. A new phase — celsian — is crystallized at roasting temperatures of 850–900 оC in the compositions with 20–60% (wt.) of α -Al2O3. Sintering of samples and dissolution of corundum particles is intensified by decreasing the size of glass particles from 8 to 3 microns in compositions. Celsian is crystallized more intensively in the compositions with larger glass fractions (5 and 8 microns). The composition with the best characteristics has 70% (wt.) of glass (particle size 5 microns; 30% (wt.) of α -Al2O3) sintered at 850 оC for 30 minutes. At the same time, the apparent density is 2.87·103 kg/m3; water absorption is 0.01%; and shrinkage is 9.86%. LTCC materials, obtained through usage of glass with large particles (5 microns), are less inclined to glass phase in metallization layers at co-sintering with noble metal powders in metallized pastes.

Our investigation was carried out with the support of the Funds of assistance of development of small enterprises in scientific and engineering sphere according to the “UMNIK” program within the agreement No. 9939ГУ/2015 (16.03.2016).

keywords Low temperature sintering materials, glass-ceramics, co-sintering, ceramics metallization, barium borosilicate glass, celsian, α-Al2O3

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Full content Low temperature materials in the Ba – Pb – Al – B - Si – O/Al2O3 system for co-sintering with noble metal powders