云南高校图书馆联盟文献共享服务平台- 国家自然科学基金(90505015)

国家自然科学基金(90505015): 作品数：23被引量：94H指数：5; 导出分析报告; 相关作者：孟松鹤韩杰才张幸红李金平艾邦成更多>>; 相关机构：哈尔滨工业大学航天空气动力技术研究院清华大学中国兵器工业第五二研究所更多>>; 相关期刊：《无机材料学报》《Journal of Materials Science & Technology》《Science China(Technological Sciences)》《材料科学与工艺》更多>>; 相关主题：价电子价电子结构EET理论HFC固溶体更多>>; 相关领域：一般工业技术理学金属学及工艺航空宇航科学技术更多>>

一种热平衡等温机制的新型热防护及相关技术被引量：15: 《宇航学报》2013年第12期1644-1650,共7页李锋艾邦成姜贵庆; 国家自然科学基金重大研究计划资助项目(90505015); 给出了一种适用于高超声速飞行器热防护的新概念——疏导式热防护,其基本理论是利用热平衡等温机制,使防热层趋于一等温体,实现热负载平衡。针对这一概念,进行了较为系统的研究,包括原理、分析方法、实现疏导式热防护的关键技术。研究...; 关键词：疏导式热防护非烧蚀热防护高超声速飞行器

Fabrication and plasma arc thermal shock resistance of HfB_2-based ultra high temperature ceramics: 《Journal of Central South University》2012年第4期887-891,共5页翁凌韩文波洪长青; Project(90505015) supported by the National Natural Science Foundation of China;Project(20060213031) supported by the Research Fund for the Doctoral Program of Higher Education of China; Two hafnium diboride based ceramic matrix composites containing 20% （volume fraction） SiC particle and with or without AIN as sintering additives were fabri,aated by hot-pressed sintering. The mechanical properties ...; 关键词：hafnium diboride thermal shock resistance plasma arc test MICROSTRUCTURE

Effect of pre-oxidation on strength and thermal shock behavior of ZrB_2-SiC-graphite ceramic composites被引量：1: 《Journal of Harbin Institute of Technology(New Series)》2012年第1期12-16,共5页刘洋梁军; Sponsored by the National Natural Science Foundation of China ( Grant No.10572044,90505015);the Program for New Century Excellent Talents in University (Grant No.NCET-05-0346); A novelty technique,namely,pre-oxidation,has been proposed to improve the strength and thermal shock behavior of ZrB2-SiC-graphite ceramic composites,which is a promising candidate for ultra-high temperature ceramics ...; 关键词：UHTCs thermal properties thermal shock PRE-OXIDATION STRENGTH

基于分子平均自由程的热流计算壁面网格准则被引量：15: 《力学学报》2010年第6期1083-1089,共7页程晓丽艾邦成王强; 国家自然科学基金重大研究计划资助项目(90505015)~~; 面向壁面热流Navier-Stokes方程数值计算的应用,研究了壁面法向网格尺度问题.从气体分子物理学角度,对壁面热流进行了微观统计分析,指出壁面热流与气体分子平均自由程之间的内在联系是壁面法向网格尺度存在最优下限的原因.据此建立了一...; 关键词：气动热环境热流分子平均自由程网格尺度数值计算

The temperature-dependent fracture strength model for ultra-high temperature ceramics被引量：16: 《Acta Mechanica Sinica》2010年第2期235-239,共5页Weiguo Li Fan Yang Daining Fang; The project was supported by the National Natural Science Foundation of China （90505015 and 10702035）.; Breaking down the entire structure of a material implies severing all the bonds between its atoms either by applying work or by heat transfer. Because bond-breaking is indifferent to either means, there is a kind of e...; 关键词：Ultra-high temperature ceramics · Equivalent energy · Critical failure energy · Strength model

HfC_x缺位陶瓷的价电子结构与性能被引量：1: 《稀有金属材料与工程》2009年第10期1718-1721,共4页李金平孟松鹤张幸红梁军; 国家自然科学基金重点项目(90505015); HfC在制备或服役过程中易出现C的缺位生成HfCx缺位固溶体,为了预报该固溶体的宏观性能,采用固体与分子经验电子理论(EET),对缺位固溶体的价电子结构进行分析,并与HfC基体进行比较。结果表明,随着x值的减小,即C原子缺位的增加,HfCx固溶...; 关键词：HfCx 缺位固溶体 EET 价电子结构性能

Valence electron structure of the(ZrTi)B_2 solid solutions calculated by the three models: 《Science China(Technological Sciences)》2009年第5期1195-1201,共7页LI JinPing,HAN JieCai,MENG SongHe & WANG BaoLin Center for Composite Materials,Harbin Institute of Technology,Harbin150001,China; Supported by the National Natural Science Foundation of China (Grant No. 90505015); The Zr-rich(Zr0.8Ti0.2)B2 and the Ti-rich(Ti0.8Zr0.2)B2 solid solutions are formed when TiB2 and ZrB2 are hot-pressed.To forecast the properties of the two solid solutions,their valence electron structure was analyzed...; 关键词：(ZrTi)B2 SOLID SOLUTIONS empirical ELECTRON theory the CALCULATION MODELS

Valence electron structure and properties of the ZrO_2被引量：2: 《Science China(Technological Sciences)》2008年第11期1858-1866,共9页LI JinPing, MENG SongHe, HAN JieCai & ZHANG XingHong Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China; the Major Project of the National Natural Science Foundation of China (Grant No. 90505015); To reveal the properties of ZrO2 at the atom and electron levels, the valence elec- tron structures of three ZrO2 phases were analyzed on the basis of the empirical electron theory of solids and molecules. The results...; 关键词：ZRO2 empirical ELECTRON theory BOND length DIFFERENCE VALENCE ELECTRON structure properties

Valence electron structure and properties of stabilized ZrO_2: 《Science China(Technological Sciences)》2008年第7期1008-1016,共9页LI JinPing, HAN JieCai, MENG SongHe & ZHANG XingHong Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China; the Major Project of the National Natural Science Foundation of China (Grant No. 90505015); To reveal the properties of stabilizers in ZrO2 on nanoscopic levels, the valence electron structures of four stable ZrO2 phases and c-ZrO2 were analyzed on the basis of the empirical electron theory of solids and mol...; 关键词：c-ZrO2 empirical ELECTRON theory BOND length DIFFERENCE VALENCE ELECTRON structure properties

ZrC1-xNx固溶体的价电子结构与性能被引量：4: 《稀有金属材料与工程》2008年第6期980-983,共4页李金平孟松鹤韩杰才张幸红罗晓光; 国家自然科学基金重点资助项目(90505015); 为了预测ZrC1-xNx固溶体的性能,根据固体与分子经验电子理论(EET),对该固溶体相进行了价电子结构分析;采用键距差(BLD)方法,计算了固溶体相中的最强键共价电子数、共价键电子数百分比、最强键键能、熔点等,并分别与ZrC、ZrN基体的价电...; 关键词：ZrC1-xNx固溶体 EET理论 BLD 价电子结构性能

国家自然科学基金(90505015)