Moisture-resistant sealing materials for downhole HPHT electrical feedthrough package

2019 
Abstract A bismuth oxide based multi-component glass system, xH3BO3-yBi2O3-(1-x-y-δ)MO-δ·REO with MO=TiO2, BaO, ZnO, Fe2O3, etc., and lanthanum series based rare earth oxides (REO), for making down...
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