environmental alumina ceramic line bulb holder tube sleeve

environmental alumina ceramic line bulb holder tube sleeve

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Alumina Ceramics:

Aluminum nitride ceramics, molybdenum and chromium, are both elements that form and stabilize ferrite and expand the ferrite phase region. The ability of molybdenum to form ferrite is equivalent to that of chromium. Molybdenum also promotes the precipitation of intermetallic phases in austenitic stainless steels, such as σ phase, κ phase, and Laves equivalent, which will adversely affect the corrosion resistance and mechanical properties of the steel, especially resulting in a decrease in plasticity and toughness. In order to maintain a single austenite structure in austenitic stainless steel, as the content of molybdenum in the steel increases, the content of austenite-forming elements (nickel, nitrogen, manganese, etc.) should also be increased correspondingly to maintain the ferrite and ferrite in the steel. Austenite forms a balance between elements. The oxidation effect of molybdenum on austenitic stainless steel is not significant. Therefore, when the chromium-nickel austenitic stainless steel maintains a single austenitic structure and no intermetallic precipitation, the addition of molybdenum has little effect on its room temperature mechanical properties, but, with With the increase of molybdenum content, the high-temperature strength of steel is improved, such as durability, creep and other properties are greatly improved. Therefore, molybdenum-containing stainless steel is often used at high temperatures. However, the addition of molybdenum increases the high-temperature deformation resistance of steel. There is often a small amount of δ ferrite in steel, so the hot workability of molybdenum-containing stainless steel is worse than that of molybdenum-free steel. The higher the molybdenum content, the worse the hot workability. In addition, molybdenum-containing austenitic stainless steel is prone to κ ( σ) phase precipitation, which will significantly deteriorate the plasticity and toughness of steel. Therefore, in the production, equipment manufacturing and application of molybdenum-containing austenitic stainless steel, attention should be paid to prevent the formation of intermetallic phases in steel, although molybdenum acts as an alloying element The reasons for the resistance of austenitic stainless steel to reducing media, surface pitting corrosion and crevice corrosion are not fully understood, but a large number of experiments have pointed out that the corrosion resistance of molybdenum is only effective when the steel contains a relatively high amount of chromium. It strengthens the corrosion resistance of chromium in steel.

High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc. 

Data Sheet↓

Thermal Shock Resistance: 200 △T°C

Maximum use temperature 1650°C

Dielectric Strength: ＞10 KV/mm

Dielectric Constant: 9.1er

Dielectric Loss Angle(1MHz): 0.0002-0.0003

Volume Resistivity(20°C): ＞1014Ω.cm

7.MOQ is not limited, small quantity is welcome.

8.Vigorous team and good after-sales service

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