钛铁矿直接制备Ti(C,N)复合粉的组织与特性

• 作 者: 汤爱涛 张龙柱 李奎 潘复生 王健 王雨 吕志强
• 机 构: 重庆大学材料科学与工程学院,重庆市质量技术监督局,重庆长安汽车股份有限公司,
• 出 处: 金属热处理
• 发表日期: 2010年01期
• 关键词: 复合粉体 N Ti 钛铁矿 直接制备 碳热还原 铁基复合材料 物理特性 碳氮化钛 酸浸

以钛铁矿(FeTiO3)为原料,用碳热还原技术制备含Fe-Ti(C,N)复合粉。用酸浸工艺对复合粉进行分离提纯,并对其物相进行定性分析,对其化学组成进行定量分析,对其物理特性(如形貌、粒度、比表面积)进行测试。结果表明,Fe-Ti(C,N)复合粉主要由Ti(C,N)、α-Fe组成,其中Ti(C,N)占50.25%,α-Fe占44.08%,粉体呈不规则形状,粒度约为2~3μm,比表面积为2.39 m2.g-1。酸浸分离的Ti(C,N)粉体纯度为97%,其性能指标已达到商品粉的要求。

Fe-Ti (C, N) composite powder was prepared by carbothermal reduction technique using ilmenite (FeTiO3) as raw material. The acid-leaching process was used to separate and purify the composite powder. The phases were qualitatively analyzed. The chemical composition was quantitatively analyzed. The physical properties (such as morphology, particle size and specific surface area) were tested. The results show that the composite powder of Fe-Ti (C, N) consists mainly of Ti (C, N) and α-Fe, with 50.25% of Ti Shape, size is about 2 ~ 3μm, the specific surface area of ​​2.39 m2.g-1. The purity of Ti (C, N) powder separated by acid leaching is 97%, and its performance index has reached the requirement of commercial flour.