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J. Cent. South Univ. (2017) 24: 782-788 DOI: 10.1007/s11771-017-3480-2 Precipitation and decomposition behaviors of carbides in AISI M2 high-speed steel with nitrogen and mischmetal LIU Bao-long(刘宝龙... Berlin Heidelberg 2017 Abstract: The behaviors of the precipitation and decomposition of carbides in AISI M2 high-speed steel modified by nitrogen and mischmetal were investigated using DSC, XRD, SEM......
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94.5%. 关键词:锂离子电池;正极材料;磷酸铁锂;液氮;淬火 中图分类号:TM912.9 文献标志码:A Synthesis of high-performance LiFePO4/C by liquid nitrogen quenching method ZHANG... was synthesized by liquid nitrogen rapid quenching method, using FePO4, Li2CO3 and glucose as raw materials. XRD refinement results indicate that rapid quenching leads to the formation of a number of Li vacancies......
氮对低碳微合金非调质钢组织和性能的影响安航航1,包燕平1,李太全1(1.北京市北京科技大学 冶金与生态工程学院)摘 要:通过热力学计算和试验,研究了对Nb-V-Ti-N系低碳微合金非调质钢增氮,以及在液态和凝固过程中TiN夹杂物的析出规律,并且根据氮微合金化原理,确定了低碳微合金非调质钢中最佳的钛含量和氮含量的浓度范围.研究证明,通过调整钢中的氮含量,可以控制TiN夹杂物质量分数和尺寸,从而得到细小弥散的TiN作为针状铁素体的形核中心,细化钢的组织,增强钢的强度和韧性.关键词:氮微合金化; 析出强......
Influence of nitrogen doping on thermal stability of fluorinated amorphous carbon thin films LIU Xiong-fei(刘雄飞), ZHOU Xin(周 昕), GAO Jin-ding(高金定) School of Physics Science and Technology...; Abstract: Nitrogen doping fluorinated......
J. Cent. South Univ. (2012) 19: 1189-1195 DOI: 10.1007/s11771-012-1127-x Effects of pre-precipitation of Cr2N on microstructures and properties of high nitrogen stainless steel LI Jing-yuan(李静媛)1... Heidelberg 2012 Abstract: Aging precipitation and solid solution heat treatment were carried out on three steels which have chromium content of 18%, manganese content of 12%, 15%, 18%, and nitrogen......
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炼钢过程中钢水氮含量控制李勇1(1.山东省济南市济钢集团有限公司技术监督处)摘 要:为控制钢中氮含量,提高产品的内在质量,通过对炼钢转炉-LF-连铸工艺的生产实践和研究,探讨影响钢中氮含量的因素和控制措施.通过生产实践数据和研究得到,要满足钢水质量对降氮要求应采取如下措施:转炉底吹氮氩气体切换时间应控制在11 min左右,避免补吹操作,加强出钢口的维护并及时更换出钢口;LF精炼时避免钢液裸露,采用大渣量埋弧操作;连铸采用保护浇注等.关键词:复吹转炉; 连铸; 控制; 氮含量......
Effects of Neodymium on Nitrogen Metabolism of Plantlet Loquat in Vitro 苏国兴1,俞明亮2,赵密珍2,洪法水1,万志刚1,顾福根1,宋卫平1 (1.College of Life Sciences, Suzhou University, Suzhou 215006, China;2.Agriculture Academy of Jiangsu Province, Nangjing 210049, China) Abstract:The effect of NdCl3 on the rooting and nitrogen metabolism of loquat in vitro was studied when NdCl3 was added to the rooted medium. The results......
UBFs become unstable under nitrogen loading rate (NLR) applied higher than 1.0 g/(L·d). The consumptions of acidity in the anammox reaction lead to the increase of pH, which is as high as 8.70-9.05...; free nitrous acid; nitrogen removal  ......