Sökning: onr:"swepub:oai:DiVA.org:uu-246059" > Investigation of a ...
Fältnamn | Indikatorer | Metadata |
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000 | 03771naa a2200349 4500 | |
001 | oai:DiVA.org:uu-246059 | |
003 | SwePub | |
008 | 150302s2015 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2460592 URI |
024 | 7 | a https://doi.org/10.1088/0960-1317/25/6/0650142 DOI |
040 | a (SwePub)uu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Lekholm, Ville,d 1976-u Uppsala universitet,Mikrosystemteknik,ÅSTC4 aut0 (Swepub:uu)ville816 |
245 | 1 0 | a Investigation of a zirconia co-fired ceramic calorimetric microsensor for high-temperature flow measurements |
264 | c 2015-05-19 | |
264 | 1 | b IOP Publishing,c 2015 |
338 | a print2 rdacarrier | |
520 | a This paper describes the design, fabrication and characterization of a flow sensor for high-temperature, or otherwise aggressive, environments, like, e.g. the propulsion system of a small spacecraft. The sensor was fabricated using 8 mol% yttria stabilized zirconia (YSZ8) high-temperature co-fired ceramic (HTCC) tape and screen printed platinum paste. A calorimetric flow sensor design was used, with five 80 mu m wide conductors, separated by 160 mu m, in a 0.4 mm wide, 0.1 mm deep and 12.5 mm long flow channel. The central conductor was used as a heater for the sensor, and the two adjacent conductors were used to resistively measure the heat transferred from the heater by forced convection. The two outermost conductors were used to study the influence of an auxiliary heat source on the sensor. The resistances of the sensor conductors were measured using four-point connections, as the gas flow rate was slowly increased from 0 to 40 sccm, with different power supplied through the central heater, as well as with an upstream or downstream heater powered. In this study, the thermal and electrical integrability of microcomponents on the YSZ8 substrate was of particular interest and, hence, the influence of thermal and ionic conduction in the substrate was studied in detail. The effect of the ion conductivity of YSZ8 was studied by measuring the resistance of a platinum conductor and the resistance between two adjacent conductors on YSZ8, in a furnace at temperatures from 20 to 930 degrees C and by measuring the resistance with increasing current through a conductor. With this design, the influence of ion conductivity through the substrate became apparent above 700 degrees C. The sensitivity of the sensor was up to 1 m Omega sccm(-1) in a range of 0-10 sccm. The results show that the signal from the sensor is influenced by the integrated auxiliary heating conductors and that these auxiliary heaters provide a way to balance disturbing heat sources, e.g. thrusters or other electronics, in conjunction with the flow sensor. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Annan teknik0 (SwePub)2112 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Other Engineering and Technologies0 (SwePub)2112 hsv//eng |
653 | a Teknisk fysik med inriktning mot mikrosystemteknik | |
653 | a Engineering Science with specialization in Microsystems Technology | |
700 | 1 | a Persson, Andersu Uppsala universitet,Mikrosystemteknik4 aut0 (Swepub:uu)andpe782 |
700 | 1 | a Klintberg, Lenau Uppsala universitet,Mikrosystemteknik4 aut0 (Swepub:uu)lkl28025 |
700 | 1 | a Thornell, Gregeru Uppsala universitet,Mikrosystemteknik,ÅSTC4 aut0 (Swepub:uu)gth12095 |
710 | 2 | a Uppsala universitetb Mikrosystemteknik4 org |
773 | 0 | t Journal of Micromechanics and Microengineeringd : IOP Publishingg 25:6q 25:6x 0960-1317x 1361-6439 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-246059 |
856 | 4 8 | u https://doi.org/10.1088/0960-1317/25/6/065014 |
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