From the curves of pore volume and pore area varying with pore diameter, it can be found that under the same gas-phase passivation time conditions, as the concentration of gas-phase passivator increases, the pore volume and specific surface area of micropores and transition pores also show a decreasing trend.
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Evaluation study on gas-phase passivation inhibiting the spontaneous combustion tendency of ferrous sulfide compounds.
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The sentences
However, ΔT3 does not exhibit a clear trend.