Iranian Journal of Materials Science and Engineering

• Optimal Composition for Sintering Density: The 88W-10Ni-2Mn alloy achieved the highest sintering density of 90.11%, despite chemical composition changes having minimal impact on sintering density overall.
• Impact of Carburization on Hardness: Carburization during sintering significantly increased micro-hardness, with the 90W-6Ni-4Mn alloy exhibiting the highest hardness of 381 Hv due to a low nickel-to-manganese ratio.
• Fracture Behavior Insights: The 90W-6Ni-4Mn alloy showed the most desirable trans-granular fracture mode, including cleavage and matrix tearing, highlighting the influence of the matrix phase and nickel-to-manganese ratio on crack propagation.

 

1.    Reported the synthesis and preparation method of thick films gas sensor of SnO2 added LaCrO3 films by simple and less expensive method
2.    The study on the impact of SnO2 additive on LaCrO3 perovskite revealed enhancements in various properties critical for gas sensing applications.
3.    Reported impact of SnO2 additive on electrical, structural and gas sensing properties of LaCrO3 perovskite thick films.
4.    SnO₂ doping altered the structural characteristics, improving crystallinity and surface morphology, which increased active surface area. 
5.    Optical studies indicated a modified bandgap, optimizing light absorption for sensing purposes. 
6.    Electrical measurements showed improved conductivity due to enhanced charge carrier mobility. 
7.    Gas sensing experiments demonstrated heightened sensitivity and selectivity, particularly for CH4 gas, making the doped material a promising candidate for environmental monitoring CH4 gas and industrial applications.
8.    Future perspectives of current research work is also provided by the authors.