Browse Prior Art Database

Device for Sensing the Presence of Hydrogen Gas

IP.com Disclosure Number: IPCOM000093357D
Original Publication Date: 1967-Sep-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Stives, RL: AUTHOR

Abstract

A protective device is provided for sensing the presence of hydrogen gas within electronic apparatus, particularly apparatus employing micro-electronic components.

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Device for Sensing the Presence of Hydrogen Gas

A protective device is provided for sensing the presence of hydrogen gas within electronic apparatus, particularly apparatus employing micro-electronic components.

In such apparatus, resistor components are incorporated which are sensitive to the presence of hydrogen. These resistor components can be functional components in the apparatus being protected which serve the additional function of detecting the presence of hydrogen.

A resistor component comprising a glazed composition of silver, palladium and palladium oxide has a structure very similar to operative glazed resistor components in the apparatus with the exception of the sensing resistor being rendered more susceptible to hydrogen than the fully operational resistor. The ways in which the sensing resistors can be made more susceptible to the presence of hydrogen include abrasion of the resistor's glazed surface, elimination of the conventional polymeric protective coatings used on the resistors, and the use of higher proportions of palladium oxide in the resistor's composition. In the presence of hydrogen, the sensing resistor absorbs more hydrogen than the operational resistor. This results in reduced resistance. When the resistance of the sensing resistor is reduced below a preselected level, a signal indicative of a harmful concentration of hydrogen can be generated or the apparatus can be automatically turned off.

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