查询词典 composites

The relative density of the ZrO2/Al2O3 composites after sintering is higher than 99%.

ZrO2/Al2O3复合材的相对密度皆在99%以上。

The excessive amount of seed reduces the relative density and mechanical properties of Si3N4 composites.

本工作研究β晶种的尺寸、数量对Si3N4复合材料的显微结构和力学性能的影响。

Theory of representation for tensor functions is introduced concisely in this paper , and a new strength criteria in the plain woven composites is derivated by this theory.

简单的介绍了张量函数表示理论，在该理论的基础上提出了一种新的适用于平面正交机织复合材料的强度准则。

Because the composites should be cooled down from soft temperature to room temperature, the residual stress in the matrix is very high, which can result damage in matrix.

陶瓷基复合材料能够使用在1100℃以上的高温氧化环境中，是航天飞机结构材料和陶瓷发动机未来的一种新型材料。

Based on XRD measurement of residual stress in the matrix and TEM observation of microstructure, the mechanism of microyield and microcreep of the particle reinforced composites was analyzed.

利用XRD方法测定了复合材料中的残余应力，利用TEM及HRTEM研究复合材料的微观组织结构，在此基础上分析了复合材料的微屈服与微蠕变机制。

Two kinds of thermal residual stresses exist in metal matrix composites. One of them is temperature gradient induced thermal stresses caused by temperature gradient in MMC. The other can develop upon cooling from the processing temperature to room temperature due to the coefficient of thermal expasion mismatch between the fiber and matrix and is called CTE mismatch induced thermal stresses.

金属基复合材料有两种形式的热应力，一种是在MMC中由于温度梯度引起的热应力，即温度梯度诱导的热应力；另一种是在冷却过程中由于基体金属和纤维的热膨胀系数不匹配引起的热应力，即热膨胀系数不匹配诱导的热应力。

The phase makeup of composites was SiC, Al2O3, Al and Si. SiC grains were distributed as island in α-Al2O3 matrix, the residual metal phase with a netted structure was also distributed in the matrix.

预制体的存在明显缩短了熔融铝合金氧化生长的孕育期，降低了氧化生长速率，同时细化了组织，氧化产物以光滑方式生长。

As the widely used resin matrix and composites, two kinds of epoxy matrix and its CF/epoxy composite and GF/composite have different mechanics property under different temperature. The result shows that the thermal property of the composite mainly depends on the matrix. If the matrix can resist high temperature, its composite can also have high strength under high temperature. resin matrix composite, thermal resistance, thermal deformation coefficient, severity retentivity ratio

多年来 ，人们一直致力于耐高温复合材料的研究工作，在耐高温树脂中能经受长期高温氧化的热固性树脂只有聚酰亚胺，本文主要研究三种树脂基复合材料在不同温度下的性能，即以聚酰亚胺为基体的复合材料以及两种环氧基复合材料在不同温度的性能。2 实验2 。1 材料选择研究中所用的增强材料选用英国考陶尔兹公司T30 0型碳纤维和进口UM - 40碳纤维以及南玻院S2高强玻璃纤维

Moreover, the sensitivity and reversibility of cement-matrix composites are affected by both the stress and moisture content.

而且，各水泥基复合材料压敏性的灵敏度和可逆性与所受应力大小和含水量密切相关。

It has been proved that the CuTAPc could disperse spontaneously onto the surface of Fe3O4 nanoparticles to form molecular dispersion layer and the Fe3O4 nanoparticles were encapsulated by CuTAPc. The nanoparticle composites took the shape of roundish spheres with their mean diameter of about 50 nm.

结果表明形成了以CuTAPc包覆在Fe3O4纳米粒子表面的纳米复合粒子，粒子呈现不规则球形，且分布均匀，粒子平均粒径在50 nm左右。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。