Results 31 to 40 of about 52,444 (177)
Research on the structure and properties of SiC ceramic containing titanium and boron [PDF]
, 2016 碳化硅（SiC）陶瓷具有高强度、高硬度、耐高温、抗氧化、抗化学腐蚀、低热膨胀系数、高热传导率等众多特点，不仅被广泛应用在功能陶瓷、高级耐火材料、磨料及冶金原料等民用领域，还应用于航空航天领域，用作发动机的热端部件。为了提高先驱体转化法制备碳化硅陶瓷的耐高温性和吸波性能，本文将钛、硼元素引入陶瓷先驱体中，利用二者高温下生成的二硼化钛作为SiC陶瓷的烧结助剂，提高SiC陶瓷的耐高温性能，并利用钛元素提高陶瓷的吸波性能，系统研究了钛硼的引入，陶瓷结构与性能的演变规律。 首先，固定先驱体中硼元素的含量 ...
李风萍
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From Affect to Values: A Lexical Approach
Journal of Personality, EarlyView.ABSTRACT Introduction Personal values act as guiding principles in life and are thought to be connected to affective experiences; however, past research has primarily examined the direction from values to affect rather than the reverse. This study identified theoretical frameworks suggesting a causal pathway from affect to values and tested this ...
Xi Chen, Shengquan Ye
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2003 本文是针对鞍钢第二炼钢厂吊车梁加固而进行高温下高强螺栓连接性能的试验研究项目。试验中试件分别在200℃～450℃高温状态下加荷和在加温后冷却状态下加荷,得出了加热温度与滑移荷载（摩擦系数）的关系和摩擦系数的降低系数λ1与加热温度曲线的关系。最终得出在高温下高强螺栓应力松弛是促使滑移荷载下降的主要原因。提出了在200℃高温下高强螺栓连接性能是安全可靠的。
陈禄如
doaj
金属材料の高温における強化に関する研究 : 積層強化と固溶強化 [PDF]
1 序論 2 人工積層複合材料の熱疲労 3 人工積層複合材の高温変形 4 固溶硬化合金の高温変形機構の判別 5 固溶硬化合金の高温変形挙動の予測 6 総括Made available in DSpace on 2012-07-04T00:27:37Z (GMT). No. of bitstreams: 1 morikawa.pdf: 10990885 bytes, checksum: 97260881f2922be6c3b3a89adcdcae30 (MD5) Previous issue date:
Morikawa, Tatsuya, 森川, 龍哉
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Drawing up shear stress-strain graphs of the mild steel in high temperature [PDF]
, 1955 P. H. Kaar published the paper treating a method of obtaining shear stress-strain graphs by interpretation of moment-twist data in Trans. of the ASME, May, 1953. The author tested the torsion of the carbon steel (c=O.26%) in high temperature -- 300℃, 400℃
高辻 雄三
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
wiley +1 more source
Changes in Precipitation Distribution Associated with Abrupt Warming in Winter at the End of the 1980s and the Effects of Surface Pressure Patterns [PDF]
, 2016 journal ...
上野 健一, 伊藤 陽晃
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source
The Effect Analysis of Environment on Microstructure，Fracture Model and Mechanical Properties of Continuous Silicon Carbide Fibers [PDF]
, 2005 耐高温、高性能连续SiC纤维在航空航天和先进武器装备中具有特殊重要地位。SiC纤维作为陶瓷基复合材料的增强相（即复合材料的骨架），要求在高温服役环境下具有优良的热物理化学与力学性能的稳定性，这些性能显然与纤维的组成和微结构有关。因此，研究高温和有氧气氛处理对纤维的力学性能与微结构的影响，对于认识SiC纤维在服役环境下的失效机理，正确评价纤维的高温环境性能，指导纤维组分与微结构设计具有重要指导作用。国外从上世纪90年代末已经开始在这方面进行了一些研究 ...
王艳艳
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