ICP-AES法同时测定氯化锂和氢氧化锂中七种杂质元素

本文报导了用ＩＣＰ－ＡＥＳ法同时测定ＬｉＣｌ和ＬｉＯＨ·Ｈ２Ｏ中７种杂质元素Ａｌ、Ｂａ、Ｃａ、Ｆｅ、Ｍｇ、Ｓｉ、Ｚｎ的分析方法。研究了基体元素锂对被测元素的基体效应，采用基体匹配法与背景扣除法进行校正。被测元素的检出限为０．１－９．４ｎｇ／ｍＬ，加标试验回收率为９２％－１０９％，当杂质元素含量为０．０００１％－０．０２８％时，相对标准偏差小于７％。方法简便、快速、准确，用于样品分析，取得了满意的结果。     

ICP—AES法测定人体血清中的Al,Be,Cu,Mn,Mo,V

建立了用ＩＣＰ－ＡＥＳ同时测定人体血清中的Ａｌ，Ｂｅ，Ｃｕ，Ｍｎ，Ｍｏ，Ｖ等六种元素的方法。在我们的设备上，检出限对Ａｌ，Ｃｕ，Ｍｏ为１－３μｍｏｌ／Ｌ，而对Ｂｅ，Ｍｎ，Ｖ为０．１－０．３μｍｏｌ／Ｌ。这六种元素的回收率在１００±２０％之间。     

连续氢化法电感耦合等离子体发射光谱同时测定生物样品…

本文叙述用氢化法电感耦合等离子体发射光谱同时测定生物样品中痕量硒，砷，锡，锑的方法。比较了浓度为２．８８ｍｏｌ／Ｌ，４．８ｍｏｌ／Ｌ和６．０ｍｏｌ／Ｌ的ＨＣｌ对Ｓｅ，Ａｓ，Ｓｎ，Ｓｂ，Ｈｇ和Ｇｅ谱线强度的影响，也比较了ＮａＢＨ４溶液中ＶＣ对测定Ｓｅ，Ａｓ，Ｓｂ，Ｓｎ，Ｈｇ和Ｇｅ的影响。在４．８ｍｏｌ／Ｌ ＨＣｌ浓度下，在１％ＮａＢＨ４溶液中加０．５％ＶＣ，ＨＹ－ＩＣＰ－ＡＥＳ的检出限是：Ｓｅ ０．     

ICP－AES法测定人体血清中的Al、Be、Cu、Mn、Mo、V

建立了用ＩＣＰ－ＡＥＳ同时测定人体血清中的Ａｌ、Ｂｅ、Ｃｕ、Ｍｎ、Ｍｏ、Ｖ等六种元素的方法。在我们的设备上，检出限对Ａｌ、Ｃｕ、Ｍｏ为１～３μｍｏｌ／Ｌ，而对Ｂｅ、Ｍｎ、Ｖ为０．１～０．３μｍｏｌ／Ｌ。这六种元素的回收率在１００±２０％之间。     

ICP—AES法测定锌及其化合物中的杂质元素

采用样品溶解后直接测定及氢氧化钇共沉淀将锌与被测杂质元素分离后测定相结合，研究了锌及其化合物中Ａｇ，Ｃｏ，Ａｌ，Ｎｉ，Ｆｅ，Ｃｕ，Ｃｄ，Ｃｒ，Ｍｎ，Ｉｎ，Ａｓ，Ｐｂ，Ｓｎ，Ｓｂ，Ｂｉ等１５个杂质元素的ＩＣＰ－ＡＥＳ测定方法，相对标准偏差１．６－８．１％。     

J/Ψ衰变中的∧,∧γ和∧π~0产生

利用北京正负电子对撞机（ＢＥＰＣ）上的北京谱仪（ＢＥＳ）收集的７．８×１０６个Ｊ／事例，测量得到Ｊ／－Ａ，ＡＡｖ和八八三个衰变道的分支比分别为Ｂｒ（Ｊ／一Ａ八）：（ｌ．０８：：０．０６：：０．２４）ｘ１０－ａ，（ＶＡＡＮ＜ｌ．６ｘｌ０－‘（９０％Ｃｕ，和＆（Ｕ’）＝（２３ｌ０．７ｌｌ０．８）ｌ１０－ｔ：第一个衰变道的角分布为：（１、ａｃｏｓ‘０），ａ＝０．５２０．３３０．１３。     

ICP-AES法测定铝锂合金中Li、Mg、Fe、Cu、Si、Zr的研究

本文研究了采用ＩＣＰ－ＡＥＳ技术同时测定铝锂合金中Ｌｉ、Ｍｇ、Ｆｅ、Ｃｕ、Ｓｉ、Ｚｒ等六元素的分析方法,优化了工作条件,经对合成样品和实际样品测量,对Ｌｉ（１％－４％）、Ｍｇ（０．５％－６％）、Ｆｅ（０．０５％－２．５％）、Ｃｕ（０．５％－５％）、Ｓｉ（０．０５％－０．５％）、Ｚｒ（０．０５％－０．５％）,方法的相对标准偏差均小于５％,回收率为９３％－１０５％。方法对照结果亦表明,本方法简便、快速、准确     

TBP色层分离—ICP／AES法测定锆铀铒合金中十七个微量杂质元…

本法对锆铀铒合金中十七个微量杂质元素和铒的测定进行了较系统的实验研究。取样１００ｍｇ时，Ａｌ，Ｃａ，Ｃｏ，Ｃｒ，Ｃｕ，Ｆｅ，Ｍｇ，Ｍｎ，Ｍｏ，Ｎｉ，Ｐｂ，Ｓｎ，Ｔａ，Ｔｉ，Ｖ，Ｙ和Ｚｎ的测定范围为３０－３２００μｇ／ｇ，Ｅｒ为０．２－３．２％，回收率９４－１０８％，ＲＳＤ为０．２－２．１％。     

NdCl3—SrCl2—MgCl2三元体系相图的研究

借助于ＤＴＡ研究了ＮｄＣｌ３－ＳｒＣｌ２－ＭｇＣｌ２三元体系相图。发现体系内有对应于ＮｄＣｌ３、ＳｒＣｌ２、ＭｇＣｌ２和Ｓｒ３ＮｄＣｌ９的四个液相面、五条二次结晶线、一个三元低共熔点Ｅ（２７．０ｗｔ．％ＮｄＣｌ３，４２．５ｗｔ．％ＳｒＣｌ３，３０．５ｗｔ．％ＭｇＣｌ２；５２６℃）和三元转熔点Ｐ（２４．０ｗｔ．％ＮｄＣｌ３，４４．５ｗｔ．％ＳｒＣｌ２，３１．５ｗｔ．％ＭｇＣｌ２；５３２℃）。体系内有     

ICP－AES法分析水质的探讨

本文用ＩＣＰ－ＡＥＳ（电感耦合等离子体－原子发射光谱法）测定水中Ａｌ、Ｂ、Ｂａ、Ｂｅ、Ｃａ、Ｃｄ、Ｃｏ、Ｃｒ、Ｃｕ、Ｆｅ、Ｍｇ、Ｍｏ、Ｍｎ、Ｎｉ、Ｐｂ、Ｓｒ、Ｖ、Ｚｎ等１８种微量元素。方法简便、快速，只将样品简单酸化，即可测定。方法检出限为０．０００５－０．５μｇ／ｍＬ。相对标准偏差＜１８％     

火焰原子吸收法测定钛合金中的硅

本文用火焰原子吸收光谱法测定钛合金中的硅。并研究了钛合金中基体元素钛和共存元素对硅含量测定的干扰情况，进行了校准曲线的试验。方法简单、快捷，具有良好的精密度和准确性。相对标准偏差为1．8％－3．7％，回收率为100％－102％。     

Effect of the high-speed impact of a shaped-charge jet on the strength of titanium alloys

The effect of the high-speed impact of a shaped-charge jet on the structure and strength of commercially pure VT1 titanium and VT22, VT3-1, and PT-3V titanium alloys is studied in comparison with AK6 aluminum alloy and Br OTsS bronze. The strength is characterized in terms of the microhardness. The microhardness versus structure is analyzed in the near-surface layer along the channel formed by the shaped-charge jet. The results obtained are used to qualitatively estimate the structural modification, type of fracture, and strength of targets made of the alloys.     

ICP-AES测定钛白粉中的Sb和P

(NH4) 2 SO4- H2 SO4快速消解钛白粉 ,ICP- AES法测定钛白粉中的 Sb和 P,该方法快速、简便、准确 ,方法的精密度为 1.0 3%— 4 .4 5 % ,加标回收率为 95 .0 %— 10 1.6 % ,在钛白粉日常检验中具有重要的实际意义     

高应变率下TC4及TC9钛合金的动态断裂

 报导了由短脉冲激光引起的应力波加载及电炮驱动Mylar膜平面飞片碰撞TC4、TC9钛合金靶的实验及数值计算研究结果。由回收靶样品的金相分析表明：在电炮驱动飞片碰撞及由激光引起的应力波加载所造成的应变率分别在10⁶ s^-1左右及10⁷ s^-1以上两种情形下，TC4、TC9钛合金的层裂特性都是以微孔洞的成核、增长、汇合为特征的韧性断裂。运用一维流体弹塑性动力学程序进行数值研究表明：成核增长NAG模型在一定程度上可以用来描述高应变率下TC4、TC9钛合金的损伤破坏特性。     

Microstructure effect on microtopography of chemically etched α + β Ti alloys

Microstructure effect on chemical etching behavior of the annealed Ti-6Al-4V and Ti-3Al-2.5V titanium (Ti) alloys was compared with that of unalloyed commercially pure titanium. The microstructural evolution of structure phases after annealing the titanium and its alloys at temperature near and above β transus and followed by furnace cooling to room temperature was studied using optical microscope, scanning electron microscope and X-ray diffraction techniques. The microstructure study illustrates that the heat treatment enhanced partitioning effect allows extensive formation of hemispherical and near spherical pits roughened surface to be readily acquired by chemically etching the annealed α + β titanium alloys. The kinetics of the chemical etching reaction process show a linear dependence on time. The annealed α + β titanium alloys that exhibit relatively lower weight loss and thickness reduction rate illustrate less chemical activity than the annealed unalloyed titanium.     

3D打印激光制备多孔镍合金组织和力学性能研究

采用3D打印激光熔化技术制备了多孔镍基合金,并对其显微组织构成和压缩力学性能进行了分析。研究结果表明,采用3D打印激光熔化技术制备的多孔镍合金,孔隙率为14.68%~18.97%、抗压强度为461~535 MPa,其微观组织主要呈现γ-Ni枝晶,压缩断口为撕裂式枝晶断裂。     

Effects of titanium additions to austenitic ternary alloys on microstructural evolution and void swelling

Ternary austenitic model alloys were modified with 0.25?wt.% titanium and irradiated in the Fast Flux Test Reactor (FFTF) at dose rates ranging over more than two orders in magnitude. While lowering of the dose rate strongly increases swelling by shortening the incubation dose, the steady-state swelling rate is not affected by dose rate. Although titanium addition strongly alters the void microstructure, swelling at about 420°C does not change with titanium additions, but the sensitivity to dose rate is preserved.     

Titanium as an endogenous grain-refining nucleus

Several studies have confirmed the applicability of the inverse growth restriction theory for predicting grain size in titanium alloy systems. However, until now, no work has identified nuclei particles that could be used to refine the β-grain size of titanium alloys during solidification. This work investigated whether titanium powder can be used to nucleate β-grains during solidification. A novel technique was used to introduce titanium powder to a series of titanium alloys, which results in significant grain refinement with an order of magnitude increase in grain density. Electron back-scattered diffraction (EBSD) was used to prove that titanium substrates can epitaxially nucleate titanium during solidification, and although a number of other potential mechanisms were investigated, it was concluded that the titanium particles heterogeneously nucleate β-grains.     

ICP-AES法测定铜稀土合金中的稀土元素

本文采用硝酸溶解试样,制成试样浓度为０．５－１ｍｇ／ｍＬ,盐酸浓度为１０％（Ｖ／Ｖ）的溶液,ＩＣＰ－ＡＥＳ法直接测定铜稀土含金中０．０５％￣１０％的单一稀土元素。研究了铜基体及其他元素干扰,选择了合适的分析线,优化了测定条件。方法准确,简单,快速,已用于铜稀土合金研究中的样品分析。     

Baroelastic shape memory effects in titanium nickelide alloys subjected to plastic deformation under high pressure

The effects of a high pressure and torsional plastic deformation in Bridgman anvils on the structure and phase transformations in titanium nickelide-based shape memory alloys are studied by electron microscopy, neutron diffraction, and X-ray diffraction. The physical properties of the alloys are measured. It is found that the baroelastic effects related to the highly reversible B2 ? B19?? martensitic transformation can occur in metastable austenitic titanium nickelide alloys in both the standard polycrystalline and nanocrystalline states under high pressure.