Paper Title:
K-Type Thin Film Thermocouples Deposited on Ni-Based Superalloy Substrates
  Abstract

NiCr-NiSi K-type thin film thermocouples with multi-layer structure were fabricated on Ni-based superalloy substrates (95 mm×35 mm×2 mm). The multi-layer structure contains NiCrAlY buffer layer (2 μm)/ thermally grown Al2O3 bond coating (200 nm)/ Al2O3 insulating layer (8 μm)/ NiCr-NiSi thin film thermocouples (1 μm)/ Al2O3 protecting layer (500 nm). The samples were statically calibrated in a tube furnace in the temperature range from 170 °C to 610 °C. The results show that the resistance of Al2O3 insulating layer is about 14.6 kΩ at 800 °C and exceeds 100 MΩ at room temperature. The Seebeck coefficient a of the samples is about 34 μV/°C, and the sensitivity coefficient K is greater than 0.8 in the temperature range from 170 °C to 610 °C. The maximal sensitivity coefficient is about 0.97 at 265 °C.

  Info
Periodical
Edited by
Chengming Li, Chengbao Jiang, Zhiyong Zhong and Yichun Zhou
Pages
684-687
DOI
10.4028/www.scientific.net/MSF.687.684
Citation
Y. Z. Chen, C. R. Wang, H. C. Jiang, W. L. Zhang, X.Z. Liu, Y. R. Li, "K-Type Thin Film Thermocouples Deposited on Ni-Based Superalloy Substrates", Materials Science Forum, Vol. 687, pp. 684-687, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: De Gong Chang, Xue Feng Wang, Fu Qin Yang, Jiang Zhong Wang
Abstract:The effects of the lubricant properties on the lubricating performance of the tripod sliding universal joint were studied under thermal...
302
Authors: Shen Cheng, Feng Zhong Sun, Ming Gao
Abstract:In order to find an excellent kind of heat transfer element under vacuum condition, the heat transfer performance of tube bundles of...
2224
Authors: Jie Jiang, Dang Sheng Xiong, Jian Liang Li, Yan Shi
Abstract:Components of space machines often works at high temperature and vacuum, or on other rigour conditions, the traditional liquid lubricant...
706
Authors: Hong Rui Ao, Deng Pan, Hong Yuan Jiang
Thin Films
Abstract:The contact at head/disk interface in hard disk drives subject to an external shock has been studied using the finite element method. A rigid...
2339
Authors: San Ming Du, Yong Ping Niu, Yong Zhen Zhang
Chapter 5: Coatings and Surface Engineering
Abstract:In the present study, 20 Wt. % ZrO2-Al2O3-17 wt.% TiO2 powders were sprayed using a plasma-spray...
420