siliceous sinter
- siliceous sinter的基本解释
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硅华
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The mian works are as follows:(1)By coprecipitation technique and coprecipitation- gel technique the nano zirconia powder was produced, factors affecting the properties of nano zirconia powder such as pH and the content of stabilizator are analyzed;(2)By the new pressless sintering process, the nano zirconia ceramic was produced, factors which can affecting the properties of nano zirconia sinter body such as moulding press and the sinter temperature are analyzed;(3)By the microtherm pressless sintering process, the nano copper added functional zirconia ceramic composite was produced, microscopic dimensionality and electric properties of such sinter body and the factors affecting such sinter body are analyzed;(4)By the self-invented "external albumen coating" technique the zirconia powder was successfully coated by carbon in the corresponding sinter body, which can help solve the traditional aggregation problem to some degree;(5)Based on analyze the characteristics in the nano powder sinter process, the "three-ball sinter model" was proposed, for the relationship between the relative density and porosity of sinter body, by mathematical fitting, such model was successfully verified.
本研究比较系统地研究了纳米氧化锆陶瓷的合成与成型机理,特别是讨论了纳米氧化锆陶瓷的稳定性,为防止纳米颗粒在外场作用下的团聚和长大提供了理论基础和实验数据,具体工作有以下几方面:(1)采用共沉淀法和共沉淀-凝胶法制备了纳米氧化锆粉体,并分析了pH值和稳定剂含量对粉体性能的影响;(2)采用新型无压烧结工艺制备了纳米氧化锆陶瓷,并分析了成型压力和烧结温度对烧结体性能的影响;(3)采用低温无压烧结工艺制备出添加纳米铜的功能性纳米氧化锆复合陶瓷,并分析了烧结体的微观尺度和电学性能的变化以及影响因素;(4)通过自创的&鸡蛋清外敷法&在真空镀膜台上对纳米氧化锆粉体进行包敷碳颗粒的表面处理,并采用真空烧结工艺制得相应烧结体,初步开始解决陶瓷烧结过程中团聚长大这一传统难题;(5)通过分析纳米颗粒在制备烧结体过程中的实际特点,提出了&三球烧结数学模型&,通过引入坯体相对密度和孔隙率的相对关系分析并通过自行编写的数学拟合软件,验证了这一数学模型。
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It is convenient for sinter to be leached, and the secondary reaction appears little. The slurry after sinter leaching is transferred into autoclave for desilicification at about 170℃, and the siliceous modulus of solution reaches more than 200. Then some lime is added for deep-desilication at normal pressure, the siliceous modulus of solution increases more than 600 even if the Al2O3 content is more than 200g/L.The SiO2 coefficient in hydrate garnet from deep-desilication is more than 0.28. Under conditions of the addition of seed and application of novel technology of carbonization, the contents of Na2O and SiO2 in product are less than 0.37% and 0.025%, respectively.
实验结果显示:烧成的熟料溶出条件宽松,二次反应程度弱;溶出浆液在170℃左右直接进行加压脱硅,脱硅后溶液的硅量指数大于200,再加入适量的石灰进行深度脱硅,即使溶液中氧化铝浓度超过200g/L时,精液的硅量指数也大于600,且得到的水化石榴石中二氧化硅饱和系数大于0.28;通过加入晶种和采用新的碳酸化分解工艺制度,产品中的SiO2 含量降至0.025%, Na2O含量小于0.37%;加入表面活性剂,不仅能将碳分母液蒸发至Na2OT浓度大于300g/L,而且还可有效减缓表面上结疤的形成速度。
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Top sintering material preheats for a short time、sinter at lower temperature、cools too fast and has low crystallinity, especially, network SFCA offorms difficultly in the top layer, that results in high ratio of pore, so the strength of top sinter is low. when thickness of sintering material is increased, the ratio of top sinter will be decreased, in its entirety, the strength of sinter will rise.
5烧结矿破碎属脆性断裂,一般在单轴压缩应力下受剪切产生,本文基于低氟烧结矿物质组成,导出了基体抗压强度与烧结矿物质组成的关系式,由此得出,基体抗压强度受磁铁矿影响不大,而受铁酸钙影响较为显著。
- 更多网络解释 与siliceous sinter相关的网络解释 [注:此内容来源于网络,仅供参考]
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siliceous sinter:硅华
siliceous sandstone 硅质砂岩 | siliceous sinter 硅华 | siliceous 含硅的;硅质的
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siliceous sediments:硅质沉积
siliceous 硅质的 | siliceous sediments 硅质沉积 | siliceous sinter 硅华
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siliceous soil:硅质土壤
siliceous skeleton 硅质骨 | siliceous soil 硅质土壤 | siliceous sponges 硅质海绵类