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jhq8064銅蟲(chóng) (初入文壇)
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[求助]
無(wú)機(jī)非金屬類論文翻譯，求英語(yǔ)大神，金幣不夠可以再發(fā)。
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超細(xì)氧化鋁（Al2O3）具有很高的化學(xué)穩(wěn)定性、熱穩(wěn)定性、高硬度及耐腐蝕性等一系列優(yōu)良特性，目前已得到廣泛應(yīng)用。因此，研究超細(xì)氧化鋁粉末的制備，選擇最佳的優(yōu)化方案，對(duì)制備出產(chǎn)率高，疏松性好，粒徑小且分布均勻的超細(xì)氧化鋁粉末有著重要意義。本研究采用沉淀法，以氯化鋁和各沉淀劑為原料制備超細(xì)氧化鋁粉體，通過(guò)研究各沉淀劑對(duì)氧化鋁粉末的影響，發(fā)現(xiàn)碳酸氫銨可以為最佳沉淀劑。對(duì)煅燒后樣品進(jìn)行XRD和激光粒度測(cè)定，檢測(cè)結(jié)果表明；采用沉淀法以氯化鋁和碳酸氫銨為原料制備得到超細(xì)氧化鋁粉末具有分散性較好、粒徑較小以及純度較高的優(yōu)點(diǎn)。該工藝技術(shù)具有流程簡(jiǎn)單，操作方便，生成成本低，易于實(shí)現(xiàn)工業(yè)生產(chǎn)。 里面的專有名詞要用知網(wǎng)翻譯助手里的有的，急用   |
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wbcui
至尊木蟲(chóng) (知名作家)
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jhq8064: 金幣+20, 翻譯EPI+1, ★有幫助 2013-06-13 09:53:55
jhq8064(phu_grassman代發(fā)): 金幣+20, bonus. 2013-08-10 08:17:54
jhq8064: 金幣+20, 翻譯EPI+1, ★有幫助 2013-06-13 09:53:55
jhq8064(phu_grassman代發(fā)): 金幣+20, bonus. 2013-08-10 08:17:54
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ultrafine Al2O3 powders are of high chemical stablility, thermal stablity, highhardness and good anti-corrosion properties and have been widely applied. optimized approach was approached to investigate the ultrafine Al2O3 powder. therefore, it is meaningful to prepare ultrafine Al2O3 powders of high yielding, good porosity,small size with good distributions. In our work, AlCl3 and other precipitants were used as raw materials to prepare ultrafine Al2O3 powde by precipitation method. effects of all precipitants on the quality of Al2O3 powders were investigated. it was fond that 碳酸氫銨 to be the best candidate of precipitate. XRD and laser particle size examinaztion were used on calcined samples. the results indicate that the ultrafine Al2O3 powders obtained by using AlCl3 and 碳酸氫銨 as raw materials were of good dipersity, small size and high purity. such processing are significant by saimple procedure, easy operation, low cost and easy realization of industrila productions. |
2樓2013-06-12 12:35:49
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