本文選題：閉環(huán)氣流磨 + 氫化鈦粉��； 參考：《粉末冶金材料科學(xué)與工程》2017年04期

【摘要】：隨著鈦及鈦合金粉末冶金技術(shù)的快速發(fā)展,采用氫化鈦粉代替鈦粉作為主要原料制備粉末冶金鈦材料已成為國(guó)內(nèi)外的研究熱點(diǎn)。本文研究了閉環(huán)氣流磨系統(tǒng)粉碎氫化鈦的工藝過程及特點(diǎn),并采用SEM、化學(xué)分析以及激光粒度測(cè)試分析等表征所制備氧化鈦粉的形貌、氧含量及粒度分布。結(jié)果表明:氫化鈦經(jīng)閉環(huán)氣流磨后,粒度(D_(50))達(dá)到5.94μm;不同粒徑(粉末粒徑分別為250,150,75和48μm)的氫化鈦粉在閉環(huán)氣流磨分級(jí)輪頻率為200Hz下,粒度(D_(50))達(dá)到10μm以內(nèi),且粒度分布區(qū)間較窄;而同一粒徑(250μm)的粉末在閉環(huán)氣流磨不同分級(jí)輪頻率下(80,100,120,140,160,180和200 Hz)分級(jí)后,粉末的粒度(D_(50))和粒度分布區(qū)間隨分級(jí)輪頻率的降低而增大和變寬;因?yàn)殚]環(huán)氣流磨系統(tǒng)是封閉的循環(huán)回路,采用高純氬氣作為磨料介質(zhì),因此物料粉碎前后的增氧量低。
[Abstract]:With the rapid development of titanium and titanium alloy powder metallurgy technology, the preparation of powder metallurgy titanium materials using titanium hydride instead of titanium powder as the main raw material has become a hot spot at home and abroad. In this paper, the technological process and characteristics of the closed-loop airflow mill system for grinding titanium hydride were studied. The morphology, oxygen content and particle size distribution of the prepared titanium oxide powder were characterized by SEM, chemical analysis and laser particle size measurement. The results showed that the particle size of titanium hydride was 5.94 渭 m after closed-loop airflow milling, and the particle size of titanium hydride powder with different particle sizes (250150 渭 m and 48 渭 m respectively) was less than 10 渭 m and the particle size distribution was narrower than 10 渭 m when the frequency of closed-loop airflow mill classifier wheel was 200Hz, and the particle size distribution of titanium hydride was less than 10 渭 m. However, the powder with the same particle size (250 渭 m) and the particle size distribution increased and widened with the decrease of the frequency of the wheel, and the particle size and distribution range of the powder were increased and widened with the decrease of the frequency of the classifying wheel after the powder was classified by 80100120140160180 and 200Hz) under the different frequency of the closed-loop airmill, the particle size of the powder increased with the decrease of the frequency of the wheel. Because the closed-loop airflow mill system is a closed loop with high purity argon as abrasive medium, the increase of oxygen is low before and after comminution.
【作者單位】： 成都理工大學(xué)材料與化學(xué)化工學(xué)院;攀枝花學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51174122) 四川釩鈦產(chǎn)業(yè)技術(shù)研究院項(xiàng)目(2013GC0146) 攀枝花科技局項(xiàng)目(2014CY-G-5)
【分類號(hào)】：TF123.23

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