Magical stainless steel high temperature becomes angry

The oxidation film of stainless steel surface is 5 kinds of transparent film, its colour and lustre can be explained by smooth interference principle. Arrive when parallel smooth illuminate when oxidation film surface, one part light (L2) specular reflection happens in the surface on oxidation film (L5) while also produce reflection (1) , enter oxidation film, come back from next exterior reflex again (L4) ; With manage L1 of another part light also produces afore-mentioned reflex and refractive phenomenon. The specular reflection light of radial L1 and radial L2 reflection enter the light that answers from next exterior reflex again inside oxidation film to form interference smooth L6 jointly. When both as it happens it is wave crest and wave crest or trough and trough photograph jackknife when, light-wave vibration increases; Contrary, when both it is wave crest and trough photograph jackknife when, light-wave vibration is abate. Bai Guang is by red, orange, yellow, green, green, blue, violet the compound light that 7 kinds of color comprise, after its generate afore-mentioned interference, after all He Chongyan's lubricious light-wave is strengthened, basically depend on the ply of oxidation film. Pass the oxidation film of some ply when Baiguang namely, make among them the light-wave vibration of some wavelengh is strengthened, oxidation film presents the color with a smooth correspondence of the place below this wavelengh; Pass the oxidation film of another ply when Baiguang, make the smooth vibration of another wavelengh is strengthened, oxidation film shows another kind of color.

1, the experiment research that stainless steel high temperature becomes angry
By afore-mentioned become angry principle analysis is knowable, become angry prime cause is stainless steel surface produces oxidation, bring about passivation film (oxidation film) the interference that ply happening changes and causes is lubricious. How does reason raise material to be able to bear or endure oxidation function is the basic measure that solves stainless steel high temperature to become angry.
(1) chemical element influence
Stainless steel contains carbon the amount is small, in high temperature environment carbolic atom is in easily in stainless steel matrix diffusing in combustion process, the combustion process of reason stainless steel is accompanying cementite process, the steel with the different content such as experiment choice chromium, silicon, nickel is planted undertake high temperature circulates experiment. The carbolic content that each steel measures to plant after the experiment ends increases proportion, with cementite the quantity judges extent of stainless steel oxidation. Graph the 2 cementite test results that plant for different steel.
Be opposite for silicon of farther test and verify be able to bear or endure the influence of cementite sex, in SUS310S steel in planting, undertake adjustment to silicon only, undertake high temperature experiments circularly next. Graph 3 state the amount that contain silicon is right be able to bear or endure the effect of cementite sex. Result of two groups of tests sees not hard should raise mark of chromic element quality to arrive 22% above or raise silicon quality mark to achieve 2% above, of material high temperature resistant oxidation function gets rising apparently.

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