TY - JOUR A1 - Mieller, Björn A1 - Gemeinert, Marion A1 - Rabe, Torsten A1 - Bolte, J. T1 - Low-temperature co-fired ceramic substrates for high-performance strain gauges T2 - International Journal of Applied Ceramic Technology N2 - Recent advances in the development of high gauge factor thin films for strain gauges prompt the research on advanced substrate materials. A glass ceramic composite has been developed in consideration of a high coefficient of thermal expansion (9.4 ppm/K) and a low modulus of elasticity (82 GPa) for the application as support material for thin-film sensors. In the first part, constantan foil strain gauges were fabricated from this material by tape casting, pressure-assisted sintering, and subsequent lamination of the metal foil on the planar ceramic substrates. The accuracy of the assembled load cells corresponds to accuracy class C6. That qualifies the load cells for the use in automatic packaging units and confirms the applicability of the low-temperature co-fired ceramic (LTCC) substrates for fabrication of accurate strain gauges. In the second part, to facilitate the deposition of thin-film sensor structures to the LTCC substrates, pressure-assisted sintering step is modified using smooth setters instead of release tapes, which resulted in fabrication of substrates with low average surface roughness of 50 nm. Titanium thin films deposited on these substrates as test coatings exhibited low surface resistances of 850 Ω comparable to thin films on commercial alumina thin-film substrates with 920 Ω. The presented material design and advances in manufacturing technology are important to promote the development of high-performance thin-film strain gauges. PB - American Ceramic Soc. CY - Westerville, Ohio KW - LTCC KW - Thin-film substrate KW - Strain gauge PY - 2013 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/28301 AN - OPUS4-28301 SN - 1546-542X SN - 1744-7402 N1 - Geburtsname von Mieller, Björn: Brandt, B. - Birth name of Mieller, Björn: Brandt, B. VL - 10 IS - 3 SP - 413 EP - 420 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany