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1)  FGM with density gradient
变密度梯度材料
2)  density gradient material
密度梯度材料
1.
To get some information concerning applying density gradient materials, thermal conductivities (with different densities and under various temperatures) were measured.
C/C密度梯度材料的研究在国内尚属于空白 ,本文作者研究了 C/C复合材料的导热系数与密度间的关系 ,并对比密度均匀材料与密度梯度材料的导热系数和力学性能 ,从理论上探索 C/C密度梯度材料的应用前景。
3)  density function gradient materials
密度功能梯度材料
4)  Functionally graded material
梯度材料
1.
With the extensive use of functionally graded material(FGM) in engineering fields,the mechanics about this kind of non-homogeneous material have been extensively developed in the recent years.
梯度材料的广泛应用促进了梯度材料力学的深入发展。
2.
It was found that along with the decay of the phase boundary,the functionally graded material (FGM) formed in the mixed-phase region.
采用一种基于简单混合物模型的本构 ,研究了不可逆相变材料中一维的冲击相边界的传播规律 ,发现在突加载荷并连续卸载的应力边界条件下 ,样品内部有梯度材料形成。
3.
Reasonable thickness of different layers of (TiB 2+Fe)/Fe FGM (functionally graded material) composites was determined by the adiabatic temperature calculation of Ti+B+Fe system and the finite element calculation of the temperature in the samples.
通过对不同Fe含量的Ti+B +Fe体系绝热温度计算和试样温度有限元计算 ,确定了 (TiB2 +Fe) /Fe梯度材料各层合理的厚度 ,并采用SHS/QP技术制备了 (TiB2 +Fe) /Fe梯度材料。
5)  Gradient material
梯度材料
1.
Preparation of TiB_2+Ni/Ni_3Al/stainless steel gradient material via FASHS;
FASHS技术制备TiB_2+Ni/Ni_3Al/405不锈钢梯度材料
2.
The lubrication wear resistance gradient material is the development of ion sulfurization technology.
润滑耐磨梯度材料是离子渗硫的发
3.
In older to increase the adhesive strength between the Ti6A14V and DLC, the gradient material of Ti6A14V-DLC was designed by the method of Finite Element Analyze (FEA), and the effects of different parameters on the thermal stress distribution were studied.
为了提高钛合金(Ti6Al4V)基体和类金刚石薄膜(DLC)之间的附着强度,采用有限元分析法对TiAl4V-DLC系生物梯度材料进行了热应力缓和设计,对不同参数对热应力分布的影响进行了分析,计算结果表明对Ti6Al4V-DLC系生物梯度材料,最优热应力缓和参数如下:体积分布系数 n= 1。
6)  gradient materials
梯度材料
1.
Preparation of 2024/3003 Gradient Materials by Semi-continuous Casting;
半连续铸造制备2024/3003梯度材料的研究
2.
Equipment Design, Preparation, and Structural Characterization of Polymeric Gradient Materials;
聚合物梯度材料的连续制备装置设计、制备及结构表征
3.
Four aspects of materials research on laser direct manufacturing technology were summarized:realizing of the properties from commercial alloy powder to complex metal parts,fabricating of gradient materials and direct manufacturing of complex parts with functional gradient materials,synthesizin.
本文综述了激光直接制造技术材料研究的4个层次:从常用合金粉末到高性能复杂金属零件的实现、梯度材料的制备与梯度复杂零件的激光直接制造、特种材料的直接合成与特种材料复杂零件的激光直接制造和多元合金体系的研究。
补充资料:密度梯度离心法
分子式:
CAS号:

性质:  一种分离精制生物体的大分子物质——蛋白质及核酸的一种方法。其要点是,把事先配制好的蔗糖、丙三醇、氯化铯等的不同浓度梯度溶液置于离心管中(最常用的是20%~5%的蔗糖连续密度梯度溶液)。把样品溶液轻轻加至离心管中、分子形状、大小,沉降速度不同,从而得到分离。离心后,自试管底部小孔分部收集滴下的小液滴于其他试管中。被检定物质的溶液浓度愈低,分离的精密度则愈好。

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