材料科学基础专有名词英文翻译(共8页).doc

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1、精选优质文档-倾情为你奉上Fundamentals of Materials Science 材料科学基础名词与术语第一章 绪论专心-专注-专业metal: 金属ceramic: 陶瓷polymer: 聚合物Composites: 复合材料Semiconductors: 半导体Biomaterials: 生物材料Processing: 加工过程Structure: 组织结构Properties: 性质Performance: 使用性能Mechanical properties: 力学性能Electrical properties: 电性能Thermal behavior: 热性能Magneti

2、c properties: 磁性能Optical properties: 光性能Deteriorative characteristics: 老化特性第二章 原子结构与原子键Atomic mass unit (amu): 原子质量单位Atomic number: 原子数Atomic weight: 原子量Bohr atomic model: 波尔原子模型Bonding energy: 键能Coulombic force: 库仑力Covalent bond: 共价键 Dipole (electric): 偶极子electronic configuration: 电子构型electron stat

3、e: 电位 Electronegative: 负电的Electropositive: 正电的Ground state: 基态Hydrogen bond: 氢键Ionic bond: 离子键Isotope: 同位素Metallic bond: 金属键Mole: 摩尔Molecule: 分子Pauli exclusion principle: 泡利不相容原理 Periodic table: 元素周期表 Polar molecule: 极性分子Primary bonding: 强键 Quantum mechanics: 量子力学 Quantum number: 量子数 Secondary bondi

4、ng: 弱键 valence electron: 价电子van der waals bond: 范德华键 Wave-mechanical model: 波粒二象性模型 第三章 金属与陶瓷的结构Allotropy: 同素异形现象 Amorphous: 无定形 Anion: 阴离子 Anisotropy: 各向异性 atomic packing factor(APF): 原子堆积因数body-centered cubic (BCC): 体心立方结构 Braggs law: 布拉格定律 Cation: 阳离子 coordination number: 配位数crystal structure: 晶体

5、结构 crystal system: 晶系crystalline: 晶体的diffraction: 衍射face-centered cubic (FCC): 面心立方结构 第五章 晶体缺陷Alloy: 合金A metallic substance that is composed of two or more elements.由两种及以上元素组成的金属材料。Weight percent (wt%)：质量百分数Concentration specification on the basis of weight (or mass) of a particular element relative

6、 to the total alloy weight (or mass).Stoichiometry: 正常价化合物For ionic compounds, the state of having exactly the ratio of cations to anions speci-fied by the chemical formula.在离子化合物中，正、负离子的比例严格遵守化学公式定义的化合价关系。Imperfection: 缺陷，不完整性A deviation from perfection; normally applied to crystalline materials wh

7、erein there is a deviation from atomic/molecular order and/or continuity.对完美性的偏离，在材料科学领域中通常指晶体材料中原子/分子在排列顺序/连续性上的偏离。Point defect: 点缺陷A crystalline defect associated with one or, at most, several atomic sites.一种仅波及一个或数个原子的晶体缺陷。Vacancy: 空位A normally occupied lattice site from which an atom or ion is m

8、issing.一个缺失原子或离子的晶格节点位置。Vacancy diffusion: 空位扩散The diffusion mechanism wherein net atomic migration is from lattice site to an adjacent vacancy.一种扩散机制，此时原子的净迁移是从晶格节点位置迁移到相近的空位中。Self-interstitial: 自间隙原子A host atom or ion that is positioned on an interstitial lattice site.处于自身晶格间隙中的原子或离子。Schottky defe

9、ct: 肖脱基缺陷In an ionic solid, a defect consisting of a cationvacancy and anionvacancy pair.在离子晶体中的一种缺陷结构，它是由一个阳离子空位和一个阴离子空位组成的空位对。Atomic vibration:原子振动The vibration of an atom about its normal position in a substance.材料中原子在其平衡位置附近的振动。一般说来，这种振动与温度相关，温度越高，振动的幅度越大，因此也称为原子热振动。Substitutional solid solution

10、: 置换固溶体A solid solution wherein the solute atoms replace or substitute for the host atoms.溶质原子取代或代替溶剂原子而形成的固溶体。Interstitial diffusion: 间隙扩散A diffusion mechanism whereby atomic motion is from interstitial site to interstitial site.一种扩散机制，此时原子的运动是从晶格间隙位置迁移到另一个相近的间隙位置。Interstitial solid solution: 间隙固溶体

11、A solid solution wherein relatively small solute atoms occupy interstitial positions between the solvent or host atoms.相对尺寸较小的溶质原子占据溶剂或晶格原子之间间隙位置所形成的固溶体。Solid solution: 固溶体A homogeneous crystalline phase that contains two or more chemical species.Both substitutional and interstitial solid solutions

12、are possible.包含两种或两种以上元素的均匀单相。固溶体可以以置换固溶体或间隙固溶体的形式存在。Solid-solution strengthening: 固溶体强化Hardening and strengthening of metals that result from alloying in which a solid solution is formed.The presence of impurity atoms restricts dislocation mobility. 由于形成固溶体的合金化过程引起的金属硬化和强化，其机制是异类原子的存在限制了位错的可动性。Solu

13、te: 溶质One component or element of a solution present in a minor concentration.It is dissolved in the solvent.溶液（固溶体）中，含量较少的组元或元素。溶质溶解在溶剂中。Solution heat treatment: 固溶处理，均匀化退火The process used to form a solid solution by dissolving precipitate particles.Often, the solid solution is supersaturated and m

14、etastable at ambient conditions as a result of rapid cooling from an elevated temperature.让沉淀物融解而形成固溶体的热处理过程。通常情况下，从固溶处理温度下快速冷却，形成室温下亚稳态过饱和固溶体。Solvent: 溶剂The component of a solution present in the greatest amount.It is the component that dissolves a solute.溶液（固溶体）中，含量最大的组元，此组元溶解了溶质。Burgers vector ()

15、: 柏氏矢量A vector that denotes the magnitude and direction of lattice distortion associated with a dislocation.表示位错引起晶格畸变程度和方向的矢量。Composition (Ci): 成分，组成The relative content of a particular element or constituent (i) within an alloy, usually expressed in weight percent or atom percent.合金中某一元素或组分的相对含量，通

16、常用质量百分数或原子百分数来表示。Defect structure: 缺陷结构，缺陷组态Relating to the kinds and concentrations of vacancies and interstitials in a ceramic compound.在陶瓷化合物中，与空位、间隙原子的类型和偏聚有关的缺陷组态。Dislocation: 位错A linear crystalline defect around which there is atomic misalignment.晶体材料中的线状缺陷，在其附近，原子发生错排。Plastic deformation corr

17、esponds to the motion of dislocations in response to an applied shear stress. Edge, screw, and mixed dislocations are possible.在外加切应力作用下位错的运动可以导致晶体材料的塑性变形。可能存在的位错类型有刃型位错、螺型位错和混合型位错。Screw dislocation: 螺型位错A linear crystalline defect associated with the lattice distortion created when normally paralle

18、l planes are joined together to form a helical ramp.The Burgers vector is parallel to the dislocation line.一种一维线型晶体缺陷，形态上可是描述为当相互平行的相邻晶面之间依次错粘合在一起形成的螺旋型斜面的中心线区域所形成的原子错排组态。螺型位错的柏氏矢量平行与其位错线。Mixed dislocation: 混合位错A dislocation that has both edge and screw components.同时含有刃型分量和螺型分量的位错。Dislocation densit

19、y: 位错密度The total dislocation length per unit volume of material; alternately, the number of dislocations that intersect a unit area of a random surface section.在单位体积材料中包含位错的长度，或者说在材料内部任意单位截面上位错线的根数。Dislocation line: 位错线The line that extends along the end of the extra half-plane of atoms for an edge

20、dislocation, and along the center of the spiral of a screw dislocation.刃型位错中多余半原子面边缘的连线，或者螺型位错中错排螺旋的中心轴线。Edge dislocation:刃型位错A linear crystalline defect associated with the lattice distortion produced in the vicinity of the end of an extra half plane of atoms within a crystal.The Burgers vector is

21、perpendicular to the dislocation line.一种一维线型晶体缺陷，形态上可是描述为晶体中存在的多余半原子面的末端附近区域所形成的原子错排组态。刃型位错的柏氏矢量垂直与其位错线。Electroneutrality: 电中性The state of having exactly the same numbers of positive and negative electrical charges (ionic and electronic), that is, of being electrically neutral.材料中一种正负电荷（离子和电子）数目精确相等

22、的状态。在此状态下，材料是不带电的。Frenkel defect: 弗仑克尔缺陷In an ionic solid, a cationvacancy and cationinterstitial pair.在离子固体中的阳离子-空位对和阳离子-间隙原子对。Grain: 晶粒An individual crystal in a polycrystalline metal or ceramic.金属或陶瓷多晶体中的一个单独的小晶体。Grain boundary: 晶界The interface separating two adjoining grains having different cry

23、stallographic orientations.把两个相邻具有不同晶体学取向的晶粒分离开的界面。Grain growth: 晶粒长大The increase in average grain size of a polycrystalline material; for most materials, an elevated-temperature heat treatment is necessary.在多晶体材料中晶粒平均尺寸的增加，对大多数材料来说，这需要在一定温度下进行热处理。Grain size: 晶粒尺寸The average grain diameter as determ

24、ined from a random cross section.从材料任一横截面上测量的晶粒直径的平均值。Microscopy: 显微术，显微镜学The investigation of microstructural elements using some type of microscope.用某种类型的显微镜对材料微观组织情况进行的研究。Microstructure: 显微组织The structural features of an alloy (e.g., grain and phase structure) that are subject to observation unde

25、r a microscope.在显微镜下观察到的某合金的结构特征（例如：晶粒和相的组织结构特征）。Photomicrograph: 显微组织照片The photograph made with a microscope, which records a microstructural image.在显微镜下拍摄，记录显微组织结构形态的照片。Scanning electron microscope: 扫描电子显微镜，SEMA microscope that produces an image by using an electron beam that scans the surface of

26、a specimen; an image is produced by reflected electron beams.Examination of surface and/or microstructural features at high magnifications is possible.使用一束电子流扫描样品表面，用样品产生的反射电子束产生图象的一种显微镜。扫描电子显微镜的应用使对样品的表面特征和显微组织特征进行高倍观察成为可能。Scanning probe microscope: 扫描探针显微镜，SPMA microscope that does not produce an

27、image using light radiation. Rather, a very small and sharp probe raster scans across the specimen surface; out-of-surface plane deflections in response to electronic or other interactions with the probe are monitored, from which a topographical map of the specimen surface(on a nanometer scale) is p

28、roduced.一种不用光学射线产生图象，而是用非常尖锐的探针依次横扫描过样品表面,利用探针对被测样品进行扫描，同时检测扫描过程中探针与样品的相互作用（如样品-探针间的隧道电流或相互作用力等），得到样品相关性质（如电子态密度、形貌、摩擦力、磁畴结构等），因而统称为扫描探针显微镜（SPM）Transmission electron microscope: 透射电子显微镜，TEMA microscope that produces an image by using electron beams that are transmitted (pass through) the specimen.Ex

29、amination of internal features at high magnifications is possible.透射电子显微镜是用穿过样品的透射电子束产生样品组织形貌像的显微镜。在透射电子显微镜上，可以在高倍下研究样品的内部结构特征。Cu forms a substitutional solid solution for concentrations up to 第六章 扩散Diffusion: 扩散Mass transport by atomic motion.固体中原子，或分子等，通过热运动而发生长程迁移，或宏观物质传输现象。这里所谈的原子迁移，在是指固体中原子脱离它原

30、来的平衡位置跃迁到另一平衡位置的位移。从产生扩散的原因来看，原子的迁移主要分为两大类，一类称为化学扩散，它是由于扩散物质在固体中分布不均匀、在化学浓度梯度的推动下产生的扩散；另一类称为自扩散，它是在没有化学浓度梯度情况下，仅仅由于热振动而产生的扩散。自扩散现象只有采用放射性同位素技术才能察觉。此外，还有应力场、热场和电场等所引起的扩散。Diffusion flux (J): 扩散通量The quantity of mass diffusing through and perpendicular to a unit cross-sectional area of material per uni

31、t time.单位时间内通过一个垂直与扩散方向上单位横截面积内的通过物质量。Diffusion coefficient (D): 扩散系数The constant of proportionality between the diffusion flux and the concentration gradient in Ficks first law.Its magnitude is indicative of the rate of atomic diffusion.Fick第一定律中，扩散通量和浓度梯度之间的比例系数。其量级表示了原子扩散的速度。Ficks first law: 菲克第一

32、定律，扩散第一定律The diffusion flux is proportional to the concentration gradient.This relationship is employed for steady-state diffusion situations.扩散通量与浓度梯度成正比例。这种关系被用于描述稳定态扩散。Ficks second law: 菲克第二定律，扩散第二定律The time rate of change of concentration is proportional to the second derivative of concentration

33、.This relationship is employed in non steady-state diffusion situations.浓度对时间的变化率成正与浓度对距离的二阶导数。这种关系被用于描述非稳定态扩散。Steady-state diffusion: 稳定态扩散The diffusion condition for which there is no net accumulation or depletion of diffusing species.The diffusion flux is independent of time.扩散组元既没有净堆积也没有净亏空的扩散过程

34、是稳定态扩散。也可以描述为：扩散通量与时间无关的扩散过程是稳定态扩散。Nonsteady-state diffusion: 非稳定态扩散The diffusion condition for which there is some net accumulation or depletion of diffusing species.The diffusion flux is dependent on time.扩散过程中，扩散组元存在净堆积或净亏空的扩散过程是非稳定态扩散。也可以描述为：扩散通量与时间有关的扩散过程是非稳定态扩散。Self-diffusion: 自扩散Atomic migrat

35、ion in pure metals.纯金属中的原子迁移过程。Interstitial diffusion: 间隙扩散A diffusion mechanism whereby atomic motion is from interstitial site to interstitial site.晶体扩散机制的一种。间隙原子由一个间隙位置迁移至邻近的间隙位置所构成的扩散。Vacancy diffusion: 空位扩散The diffusion mechanism wherein net atomic migration is from lattice site to an adjacent

36、vacancy.一种扩散机制，这时候原子的净迁移过程是从晶格结点位置移动到邻近的空位中。Activation energy (Q): 激活能，QThe energy required to initiate a reaction, such as diffusion.开动某一反应或过程，例如扩散过程，所需要的能量。Carburizing: 渗碳The process by which the surface carbon concentration of a ferrous alloy is increased by diffusion from the surrounding environ

37、ment.从周围环境中向铁基合金表面扩散碳，从而使其表面碳浓度提高的工艺过程。Component: 组分A chemical constituent (element or compound) of an alloy, which may be used to specify its composition.合金的任一组成（可以是元素或化合物），可以被用于区分其构成成分。Composition (Ci), Concentration: 成分，CiThe relative content of a particular element or constituent (i) within an a

38、lloy, usually expressed in weight percent or atom percent. Also call it concentration.合金中某一元素或组分的相对含量，通常用质量百分数或原子百分数来表示。也称为浓度。Concentration gradient (dC/dx): 浓度梯度，The slope of the concentration profile at a specific position.浓度曲线某一点处的斜率。Concentration profile: 浓度曲线The curve that results when the conc

39、entration of a chemical species is plotted versus position in a material.在材料中，某种化学物质的浓度随其位置关系变化的曲线。Interdiffusion, impurity diffusion: 互扩散Diffusion of atoms of one metal into another metal.一种金属中的原子向另一种金属中的扩散叫互扩散，又称为杂质扩散。第七章 力学性能Anelasticity: 滞弹性In most engineering materials, elastic deformation will

40、 continue after the stress application, and upon load release some finite time is required for complete recovery. This time-dependent elastic behavior is known as anelasticity.应力施加后，大多数工程材料弹性形变都会持续，并且撤去加载，样品的完全回复也需要一定的时间。这种与时间相关的弹性行为称为滞弹性。Design stress: 设计应力For static situations and when ductile mat

41、erials are used, design stress, d, is taken as the calculated stress level c (on the basis of the estimated maximum load) multiplied by a design factor, N, that is d= Nc, where N is greater than unity.对于静态条件以及延展性材料的情况下，设计应力d是计算的应力c（即估算的最大载荷）乘以一个设计因子N，即d= Nc，其中N大于1。Ductility: 延伸度Ductility is a measur

42、e of the degree of plastic deformation that has been sustained at fracture. 延伸度是指材料在断裂时发生的塑性形变程度的量度。Elastic deformation: 弹性形变Deformation in which stress and strain are proportional is called elastic deformation. Elastic deformation is nonpermanent, which means that when the applied load is released,

43、 the piece returns to its original shape.应力与应变成正比关系的形变称为弹性形变。弹性形变是非永久性的，即撤去加载后，样品可恢复初始的形状。Elastic recovery：弹性回复Elastic recovery means that when the applied load is released, the piece returns to its original shape.弹性回复是指当样品所受应力撤销后，其完全回复到初始形状的现象。Elastomer: 弹性体Elastomer is a class of polymers whose de

44、formation displayed by strain-stress curve is totally elastic, i.e., large recoverable strains produced at low stress levels. 弹性体是聚合物的一个种类，它的应力应变曲线表明其变形是完全弹性的，即很低的应力变化就会产生很大的可回复应变。Engineering strain: 工程应变Engineering strain is defined according to = (li-l0)/l0 = l/l0, in which l0 is the original leng

45、th before any load is applied, and li is the instantaneous length. Sometimes the quantity li-l0 is denoted as l, and is the deformation elongation or change in length at some instant, as referenced to the original length. Engineering strain is unitless.工程应变由方程 = (li-l0)/l0 = l/l0定义，这里l0是样品加载前的初始长度，l

46、i是加载瞬间的长度，有时li-l0也用l来表示，即代表与初始长度相比较，某一时刻样品形变的延长率或长度的变化。工程应变是没有单位的。Engineering stress: 工程应力Engineering stress is defined by the relationship = F/A0, in which F is the instantaneous load applied perpendicular to the specimen cross section, in units of newtons (N), and A0 is the original cross-sectiona

47、l area before any load is applied (m2). The units of engineering stress are megapascals, MPa.工程应力的定义为 = F/A0，这里F是加载在垂直样品横截面的瞬间载荷，单位为牛顿，A0是加载前样品的初始横截面积（单位m2），工程应力单位为MPa。Flexural strength: 抗弯强度For the brittle ceramic materials, flexural strengths are determined by the stress at fracture in transverse bending tests.对脆性陶瓷材料来说，抗弯强度即为横向弯曲试验中样品断裂时的应力。Hardness: 硬度Hardness is a measure of the resistance to localize plastic deformation.硬度是材料抵抗局部塑性形变的量度。Modulus of elasticity: 弹性模量