SEMICONDUCTOR DEVICE MANUFACTURING METHOD, SUBSTRATE MANUFACTURING METHOD AND SUBSTRATE TREATING APPARATUS

摘要

A method is provided with a step of supplying a reacting furnace (200) with a plurality of gases which react each other and an inert gas and oxidizing a substrate (20) under an atmospheric pressure, and a step of carrying out the substrate (20) after oxidizing from the reacting furnace. In the oxidizing step, the partial pressure of the oxidizing gas is kept constant by changing a flow quantity of the inert gas in accordance with atmospheric pressure variation, and a flow quantity of the inert gas is calculated based on a previously calculated flow quantity of a gas generated by the reaction of the gases and a gas remained without being consumed by the reaction.