Method for bonding thin film thermocouples to ceramics
An assembly suitable for measuring temperatures up to 700 degrees Centigrade at the cylinder walls in an internal combustion engine is described, comprising: a substrate comprised of a ceramic selected from the group consisting of alumina and partially stabilized zirconia and mixtures thereof, a thin layer of reactive metal deposited on said ceramic substrate, said reactive metal selected from the group consisting of chromium, titanium, and zirconium, and a thin thermocouple layer comprised of a thin layer of platinum metal and a thin layer of platinum-rhodium alloy deposited on said reactive metal layer, whereby said reactive metal layer serves as a bond layer for adhering said noble metal layers to said substrate.
- Assignee:
- United States Department of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5215597; A
- Application Number:
- PPN: US 7-390851
- OSTI ID:
- 6474535
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100* -- Internal Combustion Engines
440500 -- Thermal Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BONDING
CERAMICS
CHALCOGENIDES
CHROMIUM
DESIGN
ELEMENTS
ENGINES
FABRICATION
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
JOINING
MEASURING INSTRUMENTS
METALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
RHODIUM ALLOYS
SUBSTRATES
TEMPERATURE MEASUREMENT
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMOCOUPLES
TITANIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZIRCONIUM
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES