【正文】 以后 ， 鎢才獲得了工業(yè)上的應(yīng)用 。 1783年 ， 西班牙人又從另一種礦物中 (現(xiàn)稱為黑鎢礦 )析出了此新元素的酸。 tungsten trioxide hydrogen reduction method 目 錄 III 目 錄 摘 要 ................................................................................................................................... I ABSTRACT .......................................................................................................................II 目 錄 ................................................................................................................................ III 第一章 前 言 .................................................................................................................... 1 第二章 鎢冶金概論 .......................................................................................................... 3 鎢冶金簡史 ......................................................................................................... 3 鎢的礦物 ............................................................................................................. 3 鎢的資源 ............................................................................................................. 3 第三章 鎢的性質(zhì)用途及其氧化物 .................................................................................. 5 .............................................................................................. 5 ...................................................................................................... 5 .............................................................................................................. 6 ............................................................................... 6 ............................................................................... 6 ....................................................... 7 ................................................................... 7 ........................................................... 7 第四章 工業(yè)生產(chǎn)金屬鎢粉方法的研究和比較 .............................................................. 8 .............................................................................. 8 ............................................................................... 8 ....................................................................... 8 ................................................................................... 9 ..................................................... 10 他生產(chǎn)鎢粉工藝的研究 ................................................................................ 11 噴霧干燥法 ................................................................................ 11 ......................................................................................... 11 ......................................................................................... 12 ......................................................................................... 13 （簡稱 SHS法） .................................................... 13 目 錄 IV 第五章 鎢粉生產(chǎn)過程中的質(zhì)量控制 ............................................................................ 15 .................................................................... 15 .................................................................................... 16 第六章 結(jié) 論 .................................................................................................................. 17 參考文獻 .......................................................................................................................... 18 致謝 .................................................................................................................................. 19 文獻綜述 .......................................................................................................................... 20 四川理工學院畢業(yè)論文 1 第一章 前 言 鎢是 1781 年瑞典藥劑師卡爾威廉舍耶爾 (17421786)發(fā)現(xiàn)的。 industrial research。 if alloy containing fine grain, the performance can be a qualitative leap, to achieve high strength and high hardness unity to extend its field of a p p l i c a ti o n. Me a nw hi l e , the me ta l t u n gs te n i n t he s e a r e a s a nd t he i r application also morphology, particle size distribution has a close relationship. This paper reviews recent variety of fine tungsten powder preparation method, and pare the different methods of Ultrafine Powder advantages and disadvantages. Finally, in the introduction to this paper, the production process of the current selection of the most monly used industrial reduction of tungsten trioxide tungsten powder production methods and a variety of ultrafine tungsten powder production methods made the analysis and research. Key words: tungsten。 關(guān)鍵詞 ：鎢粉；性質(zhì)用途；工業(yè)研究；超細鎢粉； 三氧化鎢氫還原法 ABSTRACT II ABSTRACT Tungsten powder in industrial production occupied an increasingly important position, this paper focuses on the production of tungsten powder made out of industrial research including research on the production of tungsten, tungsten physical properties。本文綜述了近年來超細鎢粉的多種制備方法 ， 并對比不同方法所制備超細粉末的優(yōu)缺點。含細顆粒的合金比含粗顆粒的合金 ， 其性能明顯的提高 ； 若合金含超細晶粒 ， 則性能可產(chǎn)生質(zhì)的飛躍 ,達到高強度與高硬度的統(tǒng)一 ， 從而擴展其應(yīng)用領(lǐng)域。 金屬 鎢 具有廣泛的用途 ， 鎢合金中最主要的原料是鎢粉 ， 其粒度的大小對合金的性能起關(guān)鍵性的作用。 XXXXXX 畢業(yè)論文 鎢粉生產(chǎn)工藝的研究 學 生： XXX 學 號： XXXX