Tantalum Alloy - 111

Baoji Yusheng Metal mainly produces tungsten, molybdenum, tantalum, niobium, zirconium, chromium, titanium, nickel, vanadium, cobalt, hafnium and their alloys in the form of plates, sheets, strips, foils, rods, wires, tubes and other conventionally processed profiles, as well as boats, crucibles, sputtering targets, coating targets, machined parts, high-temperature furnace insulation screens, heating elements, furnace bodies (heating furnaces, annealing furnaces), corrosion-resistant equipment and other deeply processed products. The products are mainly used in the fields of sapphire crystal furnace, vacuum furnace, monocrystalline silicon furnace, semiconductor ion implantation, metal powder injection molding, vacuum coating, high temperature furnace, glass fiber, metallurgy, petrochemical, aerospace, pharmaceutical, medical equipment, food, marine, automotive, construction, industrial ceramics, environmental protection engineering and other industries. Our products have been sold all over the world, including the United States, Japan, Germany, Australia, Canada, Southeast Asia and other regions.

Effects of alloy composition in reducing problems with embrittlement in the tantalum alloy T-111

Investigated were the root causes of aging embrittlement in Tantalum Alloy - 111 and the impact of alloy change. Results reveal that T-111 has a crucial ratio of tungsten and hafnium that causes ductility to decrease at -196 C after aging at temperatures about 1040 C. It was discovered that this happens because tungsten promotes the segregation of hafnium to grain boundaries, which increases the sensitivity to hydrogen embrittlement. Tantalum alloys with lower tungsten or hafnium concentrations did not exhibit aging embrittlement; nonetheless, the majority of the alloys under study have lower strengths than T-111 and are susceptible to hydrogen embrittlement.

At 820 and 990 C, oxygen was supplied at a pressure of about.0003 torr. The method allowed for predictable and repeatable oxygen doping of the tantalum alloy. (T-111). According to the temperature dependence of the doping reaction, oxygen solution in the T-111 lattice is most likely what regulates the first rates of oxygen uptake. The tantalum and tungsten oxides prevail in the as-doped specimens, presumably because of the larger quantities of tantalum and tungsten in the alloy, despite the fact that hafnium oxides are more stable than those of tantalum or tungsten. However, high-temperature annealing encourages the formation of hafnium oxides by encouraging the oxidation of other oxides and dissolved oxygen.