共查询到20条相似文献,搜索用时 15 毫秒
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《热处理技术与装备》2012,(4):64
锂锰氧化物薄膜的二极管激光器热处理Diode laser heat treatment of lithium manganese oxide films作者:J.Prll,R.Kohler,A.Mangang,S.Ulrich,M.Bruns,H.J.Seifert,W.Pfleging期刊:Applied Surface Science,Vo.258,Issue 12,1 April 2012,P:5146-5152 相似文献
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Diamondabrasivetoolsareextensivelyusedintheprocessingofstone ,frominitialsawingtofinalfinishing .Infact,abrasiveprocessingofgraniteandmarbleforconstructionisthemostimportantfactorintheconsumptionofindustrialdiamond .Duringgrinding ,diamondabrasivegritsonthewheelsurfaceinteractwiththeworkpieceanddothecutting .Theenergyexpendedbythegrindingprocesscanleadtoelevatedtemperaturesatthegrindingzone ,whichmaycausethermaldamagetotheworkpieceandpromotewheelwear.Accordinglyextensivepastresearchhasbeenconc… 相似文献
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将制备的β-Si3N4晶种(添加剂为Yb2O3)加入到α-Si3N4起始原料中,经热压烧结获得试样.在相同的烧结条件下,与未添加晶种时的氮化硅相比,加入8%的晶种后氮化硅的热导率在各温度点高出3 W.m-1.K-1~5 W.m-1.K-1.随着温度的升高,两者的热导率均明显降低.当温度从室温升至1 200℃时,未添加晶种的氮化硅的热导率从36.2W.m-1.K-1下降到7.74 W.m-1.K-1;添加了晶种的氮化硅热导率从40.1 W.m-1.K-1下降到10.4 W.m-1.K-1.同时,利用XRD和SEM分别对热压试样的相组成和显微结构进行了分析. 相似文献
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《中国铸造》2009,6(4):378-382
19. Microstructural Evolution of AZ91 Alloy Containing 3%Ca Prepared by Cooling Slope
A. ravani, H. Aashuri, P. Davami, A. Narimannezhad, A. Foroughi and M. Kiani
Globulization of the grain refined AZ91 magnesium alloy with Ca on a cooling slope was investigated. Dendntic morphology of the grains was transferred into round and well distributed small particles as a result of grain-refinement effect of Ca in the alloy. 相似文献
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《中国铸造》2014,(4):I0027-I0030
Twelve papers in the following were published in CHINA FOUNDRY from Vol. No.l, 2004 to Vol. No.4, 2013. All of which were the award-winning best papers from the Foundry Institute of Chinese Mechanical Engineering Society and the best papers from the 69th World Foundry Congress. We hope that you will enjoy reading these specially selected papers. The full texts you can find in the Archive by entering our website link foundryworld.comlenglishlfoundrylindex,asp?leib=2 相似文献
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研究了淬火+回火(No.1钢)及淬火+冷处理+回火(No.2钢)两种处理工艺下,超级马氏体不锈钢组织和性能的差异。结果表明:两钢中基体组织均为回火马氏体,但经过冷处理的No.2钢马氏体板条更平直,尺寸更小。在No.1、No.2钢中,随回火温度的升高,逆变奥氏体含量的变化趋势都为先增高后降低。在No.1、No.2钢中逆变奥氏体达到最大值的回火温度分别为650℃,700℃。No.2钢中Ni元素富集点含量比No.1钢低,但Ni富集点数比No.1钢多。No.1、No.2钢的硬度变化趋势都为先快速降低后缓慢回升,但在相同回火温度下,No.2钢的硬度值更低。 相似文献