Results 41 to 50 of about 1,086,884 (143)
1.前言电瓷制造过程中,电瓷产品的机、电、热性能的要求十分严格,就三者关系而言,有时又是相互矛盾的.因此,电瓷产品往往出现这样或那样的机、电、热性能不合格.瓷质机械强度的高低,直接影响电瓷产品的"等级".然而,影响瓷质机械强度的因素又是多方面的,既有配方问题,又有工艺问题.从配方角度出发,提高瓷质机械强度有两种方法:其一,改变瓷的组成.其二,改善坯釉之间的适应性,即控制坯釉的热膨胀系数,使釉层受到压应力 ...
曾国民
doaj
ABSTRACT Thermo‐responsive hydrogels based on poly(N‐isopropylacrylamide) (PNIPAM) are promising candidates for soft actuation, yet their practical applications are often constrained by sluggish thermo‐responsive kinetics and insufficient mechanical robustness.
Hui Liu +5 more
wiley +1 more source
一、引言长期的试验和生产实践证明,与高压电瓷瓷坯配合良好的釉可提高机械强度30%以上;而配合不当的釉不仅不提高强度,反而导致强度降低,严重时可能降低50%以上。这说明,虽然釉仅仅是熔附于瓷件表面薄薄的一层玻璃态物质,但对提高或降低瓷的机械强度有着重要影响。关于釉对电瓷机械和热稳定性能影响,早在1940年英国的C.伯特尼等曾作过详细的论述,提出了关于压缩釉的问题。苏联В·П ...
王振林
doaj
ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang +6 more
wiley +1 more source
一、前言最近,对高温下具有高强度及高耐腐蚀性结构材料用陶瓷的研究取得了进展。这类陶瓷多可用于高温机械部件。但有关这类陶瓷机械性能的情报还不够充分 ...
奥田博, 胡景星
doaj
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
ABSTRACT Zirconium dioxide (ZrO2) thin films are critical materials owing to their thermal stability, mechanical durability, and optical transparency enabling applications in photonic, sensing, and electronic devices. However, achieving uniform deposition via plasma‐enhanced chemical vapor deposition (PE‐CVD) has remained challenging due to poor ...
Nour Manafikhi +4 more
wiley +1 more source
概要论述了微电子机械系统的计算机辅助设计和模拟过程,分析了MEMSCAD系统所应具有的主要内容和系统模拟中的关键问题,讨论了目前采用的各种模拟系统的模拟形式和应用范围。并结合静电微马达与微米/纳米镊子实例,分析了模块化的CAD软件结构形式以及所用MEMS材料的数据库建立和应用连接 ...
钱劲 +4 more
core +1 more source
Interface Issues of Inorganic Solid‐State Electrolytes in Secondary Magnesium Batteries
ABSTRACT Solid‐state magnesium batteries (SSMBs) have gained significant attention as promising candidates for next‐generation safe energy storage systems because of the abundance of magnesium (Mg) in the earth's crust, superior energy density, and inherent nonflammability.
Jiren Wang +9 more
wiley +1 more source
对Fe2O3、TiO2含量不同的电瓷坯料分别进行了烧结实验,并通过机械强度测试分析其性能变化。运用X射线衍射、扫描电镜等测试技术对材料内部晶体结构进行了分析,讨论了Fe2O3、TiO2在不同气氛中的作用机理。结果表明,Fe2O3、TiO2含量提高,瓷坯烧结温度降低,尤其是Fe2O3含量增大时机械强度显著下降。
王芬, 罗宏杰, 朱建锋
doaj

