
海綿钛
After mixing the sponge titanium and the alloy elements, the blacks for ****** titanium electrode were pressed.
采用了海綿钛與合金元素混合均勻後壓制自耗電極工藝。
The factors influencing sponge titanium quality and the measures of reducing the impurity content in it were summarized.
總結影響海綿钛質量的因素以及降低海綿钛雜質含量的措施。
Improving operational system for distillation to shorten the distillation period and raising the quality of sponge titanium.
改善蒸餾操作工藝制度,縮短蒸餾周期,提高海綿钛質量。
The status of supply and demand of sponge titanium in recent years was presented, and responses and measures adopted by different countries were also analyzed.
分析了近年海綿钛的供求形勢及各國的應對動向,指出未來幾年海綿钛将出現供大于求的局面。
The development outline for three top products in the titanium metallurgy industry, sponge titanium, ferrotitanium with high titanium and nanometer titanium dioxide, was introduced.
簡要叙述了钛冶金工業中三個高端産品海綿钛、高钛鐵和納米二氧化钛的發展概況。
海綿钛(sponge titanium)是金屬钛的初級工業形态,因其多孔海綿狀結構而得名。該材料是钛産業鍊的核心中間産品,需進一步熔煉加工成钛錠或钛合金。以下從生産工藝、應用領域及特性三方面展開說明:
定義與物理結構 海綿钛是通過鎂熱還原法(克羅爾法)或鈉熱還原法,将四氯化钛(TiCl₄)還原生成的金屬钛塊體。其孔隙率可達35%-50%,體積密度約為1.5-2.0 g/cm³,呈現銀灰色蜂窩狀形态。這種多孔結構源自還原過程中副産物氯化物的揮發逸出[中國有色金屬工業協會,钛冶煉技術白皮書]。
核心生産工藝 克羅爾法作為主流工藝,包含氯化、還原、真空蒸餾三大工序。四氯化钛在氩氣保護下與金屬鎂發生還原反應(TiCl₄ + 2Mg → Ti + 2MgCl₂),反應溫度需精确控制在800-900℃。蒸餾工序通過梯度升溫至1000℃去除殘留的MgCl₂,最終獲得純度達99.6%的工業級海綿钛[美國材料與試驗協會ASTM B299标準]。
應用領域 作為航空級钛合金的基礎原料,海綿钛主要應用于:
Sponge titanium(海綿钛)是金屬钛的一種多孔形态,其名稱源于其外觀類似海綿的疏松多孔結構。以下是詳細解析:
海綿钛的純度直接影響下遊钛制品的性能,其生産過程涉及複雜的冶金技術,是現代高端制造業的關鍵基礎材料之一。
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