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V R Harchekar - One of the best experts on this subject based on the ideXlab platform.

  • characterization of transition Metal Oxide Ceramic material for continuous thermocouple and its use as ntc fire wire sensor
    Sensors and Actuators A-physical, 2005
    Co-Authors: M L Singla, Shweta Sharma, Baldev Raj, V R Harchekar
    Abstract:

    Abstract The Ceramic powder prepared from the mixture of Mn 3 O 4 and La 2 O 3 have been characterized for NTC behavior and the same have been used as CT 2 C (continuous thermocouple) sensor in the form of a thin Metal cable to detect over-heating. These materials have mega ohm resistance at room temperature and showed exponential drop in resistance with the rise in temperature over a temperature range of 100–400 °C. It has been observed that as the concentration of La 2 O 3 increases from 0 to 10% the NTC behavior drops from (400–260 °C) ±10%. The material was pressed into pellets and sintered at 700 °C for 3 h resulting in good bonding strength. Electrical characterization of the material was done by measuring the resistance over a temperature range of 100–400 °C. The material showed reproducible NTC characteristics over the temperature range 400, 370, 340, 280, and 260 °C with decreasing thermistor constant values ( B  = 9588, 9210, 8500, 5170, 3330 K −1 ) and activation energy (Δ E  = 826, 794, 733, 445, 287 meV), respectively. The decrease in activation energy of the Ceramic powder with increase in La 2 O 3 concentration makes it possible to fabricate thermal sensors which can be used in different temperature ranges. The microstructure was studied using SEM and evidence of a sintered body with grain size around 1 μm was observed in the material. XRD analysis indicated the single-phase tetragonal structure of the Ceramic material. The process of using this Ceramic material for fabrication of 10 ft continuous fire wire sensor has been explained.

M L Singla - One of the best experts on this subject based on the ideXlab platform.

  • characterization of transition Metal Oxide Ceramic material for continuous thermocouple and its use as ntc fire wire sensor
    Sensors and Actuators A-physical, 2005
    Co-Authors: M L Singla, Shweta Sharma, Baldev Raj, V R Harchekar
    Abstract:

    Abstract The Ceramic powder prepared from the mixture of Mn 3 O 4 and La 2 O 3 have been characterized for NTC behavior and the same have been used as CT 2 C (continuous thermocouple) sensor in the form of a thin Metal cable to detect over-heating. These materials have mega ohm resistance at room temperature and showed exponential drop in resistance with the rise in temperature over a temperature range of 100–400 °C. It has been observed that as the concentration of La 2 O 3 increases from 0 to 10% the NTC behavior drops from (400–260 °C) ±10%. The material was pressed into pellets and sintered at 700 °C for 3 h resulting in good bonding strength. Electrical characterization of the material was done by measuring the resistance over a temperature range of 100–400 °C. The material showed reproducible NTC characteristics over the temperature range 400, 370, 340, 280, and 260 °C with decreasing thermistor constant values ( B  = 9588, 9210, 8500, 5170, 3330 K −1 ) and activation energy (Δ E  = 826, 794, 733, 445, 287 meV), respectively. The decrease in activation energy of the Ceramic powder with increase in La 2 O 3 concentration makes it possible to fabricate thermal sensors which can be used in different temperature ranges. The microstructure was studied using SEM and evidence of a sintered body with grain size around 1 μm was observed in the material. XRD analysis indicated the single-phase tetragonal structure of the Ceramic material. The process of using this Ceramic material for fabrication of 10 ft continuous fire wire sensor has been explained.

А. Р. Kytsya - One of the best experts on this subject based on the ideXlab platform.

Baldev Raj - One of the best experts on this subject based on the ideXlab platform.

  • characterization of transition Metal Oxide Ceramic material for continuous thermocouple and its use as ntc fire wire sensor
    Sensors and Actuators A-physical, 2005
    Co-Authors: M L Singla, Shweta Sharma, Baldev Raj, V R Harchekar
    Abstract:

    Abstract The Ceramic powder prepared from the mixture of Mn 3 O 4 and La 2 O 3 have been characterized for NTC behavior and the same have been used as CT 2 C (continuous thermocouple) sensor in the form of a thin Metal cable to detect over-heating. These materials have mega ohm resistance at room temperature and showed exponential drop in resistance with the rise in temperature over a temperature range of 100–400 °C. It has been observed that as the concentration of La 2 O 3 increases from 0 to 10% the NTC behavior drops from (400–260 °C) ±10%. The material was pressed into pellets and sintered at 700 °C for 3 h resulting in good bonding strength. Electrical characterization of the material was done by measuring the resistance over a temperature range of 100–400 °C. The material showed reproducible NTC characteristics over the temperature range 400, 370, 340, 280, and 260 °C with decreasing thermistor constant values ( B  = 9588, 9210, 8500, 5170, 3330 K −1 ) and activation energy (Δ E  = 826, 794, 733, 445, 287 meV), respectively. The decrease in activation energy of the Ceramic powder with increase in La 2 O 3 concentration makes it possible to fabricate thermal sensors which can be used in different temperature ranges. The microstructure was studied using SEM and evidence of a sintered body with grain size around 1 μm was observed in the material. XRD analysis indicated the single-phase tetragonal structure of the Ceramic material. The process of using this Ceramic material for fabrication of 10 ft continuous fire wire sensor has been explained.

Shweta Sharma - One of the best experts on this subject based on the ideXlab platform.

  • characterization of transition Metal Oxide Ceramic material for continuous thermocouple and its use as ntc fire wire sensor
    Sensors and Actuators A-physical, 2005
    Co-Authors: M L Singla, Shweta Sharma, Baldev Raj, V R Harchekar
    Abstract:

    Abstract The Ceramic powder prepared from the mixture of Mn 3 O 4 and La 2 O 3 have been characterized for NTC behavior and the same have been used as CT 2 C (continuous thermocouple) sensor in the form of a thin Metal cable to detect over-heating. These materials have mega ohm resistance at room temperature and showed exponential drop in resistance with the rise in temperature over a temperature range of 100–400 °C. It has been observed that as the concentration of La 2 O 3 increases from 0 to 10% the NTC behavior drops from (400–260 °C) ±10%. The material was pressed into pellets and sintered at 700 °C for 3 h resulting in good bonding strength. Electrical characterization of the material was done by measuring the resistance over a temperature range of 100–400 °C. The material showed reproducible NTC characteristics over the temperature range 400, 370, 340, 280, and 260 °C with decreasing thermistor constant values ( B  = 9588, 9210, 8500, 5170, 3330 K −1 ) and activation energy (Δ E  = 826, 794, 733, 445, 287 meV), respectively. The decrease in activation energy of the Ceramic powder with increase in La 2 O 3 concentration makes it possible to fabricate thermal sensors which can be used in different temperature ranges. The microstructure was studied using SEM and evidence of a sintered body with grain size around 1 μm was observed in the material. XRD analysis indicated the single-phase tetragonal structure of the Ceramic material. The process of using this Ceramic material for fabrication of 10 ft continuous fire wire sensor has been explained.