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为探讨高原牌70kN和进口120，210kN瓷绝缘子的成分和结构性能，中采用原子吸收光谱（AAS）和X射线衍射（XRD）方法，对三类产品进行了检测。结果表明，有效成分除K2O外，70kN和210kN的SiO2,Al2O3,Fe2O3含量接近，主晶相基本相同，有刚玉，莫来石、石英和长石等；结晶相总量：70kN35%，120kN40%,210kN48%，这表明机械强度愈大，结晶相含量愈高，只需调整70kN原样的部分成分，粒度和工艺，即生产出高等级（如210kN)瓷绝缘子。 相似文献
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Six clay mineral phases are recognized by means of electron microscope examination in a drilling profile in the eastern part of the Hobei Plain. Based on the relationship between these clay mineral phases, strata in this profile are divided into two groups, i.e., the upper and the lower groups. Five subgroups can be further distinguished within the lower group. The evolution of clay mineral phases provides indication of %he palaeoclimatic variation during this geological period. 相似文献
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Experimental data on cathodeluminescence of 34 individual specimens of naturallyoccurring apatite differring in the mode of occurrence are presented in this paper.In accordance with the characteristic distribution of the bands and lines of apatite specimens,it has been confirmed that RE ions Sm^2 ,Dy^3 ,En^2 ,etc.,are the main activators for the cathodeumineseence of apatite.In conjunction with the crystallological study.a priliminary investigation into the mechanism for apatite cathodelnminescence has been made as well.The author has suggested that the cathodelumineseence of apatite may be attributed to the replacement of Mn at the site of Can by Mn^2 ,and the luminous colour seems to have no direct,simple correlation with that of the crystal itsself. 相似文献
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中国黄土物质来源的初步探讨——石英粉砂颗粒表面结构的电子显微镜研究 总被引：12，自引：0，他引：12
Loess of China, regardless of its ageexhibites similarity in the surface textures of silt quartz grains, all of them having conchoidal fractures, flat cleavage planes(or plates) and mechanical cracks, and having been rewrked by silica precipitation and chemical dissolution. Silica precipitation an different-degree chemical etching and dissolution are commonly found on thes silt quartz grains indicating that they would be separated from source rocks, such as granite, gneiss, etc. ; or they might have been subjected to relatively long weathering in situ before transported to loessic accumulation areas; or they probably underwent diagenesis when brought into the sedimentation system, followed by weathering and erosion, and then transported to loess accumulation areas. It is evident from the relationship between loess of China, deserts and Gobi, loessic cimposition and its regional distribution that MesozoicCenozoic land detrital sediments widely spreaded in the Ordos and Alxa regions are the principal material source of loessic materials in China. 相似文献
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我国某些稀土矿床中方解石的阴极射线发光性质 总被引：2，自引：0，他引：2
一、前言 本世纪初国外开展了对天然矿物发光的系统研究工作,包括对方解石的光子发光、阴极射线发光、伦琴发光及热发光等研究。在发光理论方面提出了方解石是以Mn~(2 )、Pb~(2 )、RE~(3 )、UO~(2 )为激活剂形成分立发光中心以及有机质产生的分子中心的矿物。其中方解石的热发光及Mn~(2 )在方解石中的发光机理研究得较详细,同时也开始注意了方解石的发光与矿物形成条 相似文献
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三类高强度悬式瓷绝缘子的成分特征和产品性能的关系 总被引：1，自引：0，他引：1
采用原子吸收光谱(AAS)、X射线衍射(XRD)、偏光显微镜(OH)和分析型透射电镜(TEM)等技术手段，对贵州产70kN和日本进口120kN、210kN三类瓷绝缘子的化学组成，矿物成分特征和产品性能的关系进行了研究。结果表明，三类产品的主化学成分为siO2、Al2O3。矿物相有刚玉、英来石、石英和长石。产品除含有偏光显微镜可分辨的晶体外，在电镜下还见有微米级以下的显微矿物。不同等级的产品，不但结晶相含量不同，晶体大小、分布状态各有特征。指出贵州产70kN产品应控制K20含量，并用部分工业氧化铝替代铝矾土，通过调整工艺提高结晶相的含量。 相似文献
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