本文選題：超細(xì)WC-Co復(fù)合粉末　切入點(diǎn)：有機(jī)碳　出處：《中國鎢業(yè)》2016年06期 　論文類型：期刊論文

【摘要】：分別以有機(jī)碳、超純炭黑為碳源,可溶性鎢鹽、鈷鹽為原材料,采用噴霧干燥、低溫還原碳化法制備超細(xì)WC-Co復(fù)合粉末。對兩種不同碳源制得的WC-Co復(fù)合粉末進(jìn)行碳含量、氧含量、松裝密度、BET比表面積、激光粒度分布測定、形貌觀察和物相分析。研究碳源對超細(xì)WC-Co復(fù)合粉末性能的影響。結(jié)果表明:兩種碳源制備的復(fù)合粉末都呈空殼球形結(jié)構(gòu),比表面積均大于2 m~2/g,一次顆粒尺寸在100~200 nm之間,空殼球體平均粒徑在30~50μm之間。有機(jī)碳制備的復(fù)合粉末的一次顆粒間孔隙度更高,空殼球體壁厚更薄,粉末松裝密度更低,所需的還原碳化溫度更低、時(shí)間更短。
[Abstract]:Ultrafine WC-Co composite powders were prepared by spray drying and low temperature reduction carbonization with organic carbon, ultrapure carbon black as carbon source, soluble tungsten salt and cobalt salt as raw materials. The effect of carbon source on the properties of ultrafine WC-Co composite powder was studied. The results showed that the composite powder prepared by the two carbon sources had hollow spherical structure. The specific surface area is more than 2 mm2 / g, the primary particle size is between 100 nm and 200 nm, and the average particle size is between 30 ~ 50 渭 m. The composite powder prepared by organic carbon has higher primary intergranular porosity, thinner shell wall thickness and lower loose powder density. The reduction carbonation temperature is lower and the time is shorter.
【作者單位】： 江西理工大學(xué)工程研究院;江西理工大學(xué)材料科學(xué)與工程學(xué)院;贛州澳克泰工具技術(shù)有限公司;
【分類號】：TF123
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本文編號：1620470