“一种钛及钛合金球形粉末的真空感应熔炼气雾化制备方法”发明专利

申请号：CN201510633212．8申请日：2015—09—29公开（公告）日：2015—12—09公开（公告）号：CN105127436A申请（专利权）人：西北有色金属研究院 摘要：本发明提供了一种钛及钛合金球形粉末的真空感应熔炼气雾化制备方法，包括以下步骤：①将陶瓷粉末和无水乙醇按质量比混合均匀，得到防碳化涂料，然后将防碳化涂料均匀涂覆于石墨导流管内壁上部，干燥后得到防碳化涂层。     

一种钛合金冷拉伸用润滑涂层研制

采用化学方法研制出1种新的冷拔用润滑剂涂层，该表面涂层与钛基材结合力强，表面呈灰色，主要成分为Na3TiOF5。该涂层与石墨乳和二硫化钼混合配套使用可大大减小拉伸摩擦阻力，提高钛材表面质量。     

氢燃料电池中钛双极板研究进展

钛及钛合金密度低、比强度高且在酸性环境中耐蚀性优异,在氢燃料电池双极板中具有较高的应用价值。回顾了近年来氢燃料电池用钛双极板的研究进展,详述了钛双极板表面改性技术的研究成果,包括掺杂合金元素、钛表面涂覆金属基涂层(贵金属、金属碳/氮化物等)和碳基涂层(石墨、无定型碳等)。涂层结构组织的复合化和纳米化,有利于提升钛双极板的耐蚀性、导电性和疏水性,其对于提升氢燃料电池的性能及保证其运行的稳定性和耐久性具有重要作用。     

小口径钛管材涡流探伤技术

概括了影响钛管涡流探伤可靠性的主要因素,并提出解决途径。研制出新型多线圈差动结构穿过式探头,建立了钛管试验频率范围计算经验公式。试验结果表明,该方法具有检测灵敏度高、重复性好、抗干扰性能优等特点,可满足航天、核用钛管涡流检测技术要求。     

电化学沉积法制备钛基HA涂层

在钛基材表面获得羟基磷灰石（HA）涂层以改善钛与生物体的相容性，本项工作采用电沉积的方法在阳极氧化处理过的钛基体上制备了羟基磷灰石涂层。用扫描电子显微镜（SEM）、X射线衍射（XRD）等手段对涂层进行了表征。试验结果表明：电沉积初期的羟基磷灰石涂层呈多孔层片状：随电压、时间、电解液浓度的增大，涂层变厚，层片呈花瓣状发散排列：对基体阳极氧化处理有助于提高钛基与涂层的结合强度。     

钛基材上电化学沉积羟基磷灰石

通过电沉积法在经过阳极氧化的钛基材表面沉积磷酸钙盐涂层,再经碱热处理使磷酸钙涂层转变为羟基磷灰石涂层。扫描电镜(SEM)观察了阳极氧化后生成的TiO2纳米管的微观结构,以及生成的羟基磷灰石的形貌。X射线衍射仪(XRD)分析了涂层的相组成,同时测定了涂层与基体的结合强度。试验结果表明:电沉积涂层CaHPO4·2H2O经碱处理后转变为羟基磷灰石;电沉积添加双氧水与钛基材经过阳极氧化后使得涂层与基体结合强度有所提高。模拟体液浸泡试验表明涂层具有良好的生物活性。     

金属涂层粉末生产

美国俄亥俄州的一家先进陶瓷公司已开始用其独特的新工艺生产镍、锌、铜、铁、锡、钴或这些金属复合涂层的粉末产品，涂层粉末的粒径范围很广，基体粉粒的粒径从小于５ｕｍ到大于５０００ｕｍ均可，并取决于粉粒的密度和形状．能够生产的涂层粉末包括石墨（片状和须状合成石墨和天然石墨），氮化硼，碳化硅，钨，碳化钨，氧化锆，钼，钕铁硼，氧化铝，二硼化钛，铝和不锈钢．新的涂层工艺能够将每个粉粒都完整地包覆上高质量的纯金属涂层，而且涂层厚度可任意选择。所生产的涂层粉末，已被用于金属基复合材料，其它方面的应用包括切削工具，…     

利用中间阻碍层在硬质合金上沉积高粘结强度的金刚石 …

能完全阻止钴由基体渗入表面而且大可与ＷＣ－Ｃｏ硬质合金相比的阻碍底层在本研究中取得了进展，这些底层连续无缺陷，沉积时硬质合金基体没有损坏和脱碳现象，底层上沉积 钛基中间层。对以此方法涂覆后的硬质合金基体采用特殊的激光照射工艺进行纳米晶金刚石引晶处理和用等离子体ＣＶＤ法进行金刚石涂层。引晶过程采用超声波处理，可以将石墨碳从基体表面除去。用此方法获得的金刚石涂层与基体表面粘结牢固，这是在中间层，金刚石     

专利名称：钛铝涂层用多弧离子镀膜机

一种钛铝镀层用多弧离子镀膜机，它主要由多弧离子镀膜炉炉壁上均匀安装多个钛铝镀层蒸发源与多个纯钛离子轰击、预镀蒸发源构成，本实用新型的优点是钛铝涂层与工件基体结合牢固．保证了钛铝镀膜涂层性能良好。且钛铝涂层多弧离子镀膜机的钛铝镀层蒸发源与纯钛离子轰击预镀蒸发源分布合理，加工工效高。     

钛系梯度功能材料

钛系陶瓷有ＴｉＣ、ＴｉＮ、ＴｉＢ2等,其维氏硬度高达3000以上,合成也比较容易。可以用ＰＶＤ和ＣＶＤ方法在金属基体表面形成钛系涂层,而且这种涂层可以以梯度功能材料形式结合到金属基体上。用钛作基体时,通过表面碳化或氮化处理而在基体表面上形成Ｔｉ/ＴｉＣ或Ｔｉ/ＴｉＮ系梯度功能材料层,能有效地提高其抗破损性。用硬质合金作基体时,在烧结时通入反应性气体,即可形成自硬质合金到钛系陶瓷直至表面成分逐渐变化的梯度功能材料层。梯度功能材料作为表面覆盖层,应用于切削工具上能有效地延长切削工具的使用寿命,可使其抗破损性提高50%…     

Effects of Post-weld Heat Treatment on Microstructure,Mechanical Properties and the Role of Weld Reinforcement in 2219 Aluminum Alloy TIG-Welded Joints

In as-welded state, each region of 2219 aluminum alloy TIG-welded joint shows diff erent microstructure and microhardness due to the diff erent welding heat cycles and the resulting evolution of second phases. After the post-weld heat treatment, both the amount and the size of the eutectic structure or θ phases decreased. Correspondingly, both the Cu content in α-Al matrix and the microhardness increased to a similar level in each region of the joint, and the tensile strength of the entire joint was greatly improved. Post-weld heat treatment played the role of solid solution strengthening and aging strengthening. After the post-weld heat treatment, the weld performance became similar to other regions, but weld reinforcements lost their reinforcing eff ect on the weld and their existence was more of an adverse eff ect. The joint without weld reinforcements after the post-weld heat treatment had the optimal tensile properties, and the specimens randomly crack in the weld zone.     

新型的治疗阿尔茨海默氏症药物(1-二甲基磷酰基-2,2,2-三氯)-乙基-1-醇烟酸醋对体外神经细胞的作用

目的: 观察本实验室合成的一种治疗阿尔茨海默氏症(AD)的药物(1-二甲基磷酰基-2, 2, 2 -三氯)-乙基^-1-醇烟酸醋(NMF),对体外培养的皮层神经细胞活性的影响以及对海人藻酸(KA)所致的神经损伤的保护作用。方法: 采用体外培养皮层神经元的方法,解剖分离 15 d胚胎小鼠皮层神经细胞, 接种于 96孔板,48 h 后加药并培养 72 h,以 MIT 法 观察 NMF 对小鼠皮层神经细胞活性的影响;同时将接种于 24 孔板的细胞预先给予 NMF,d 3 时加或不加KA处理后,以台盼蓝染色鉴别并计数死、活细胞,可得出细胞的存活率。结果: NMF 明显促进胎鼠皮层神经元活性,其中 NMF1、0. 1、10nmol·L^-1促进神经元活性增殖率分别高达 34.7%、37.4%、36. 7%, NMF 明显促进正常胎鼠皮层神经元存活卒,与对照组比较,10nmol·L^-1 NMF 对皮层神经元的存活率分别提高 39.3%、73.5%。 NMF能显著 对抗 KA 所致的神经元损伤,与 KA 损伤组相比, NMF0.1、10、10nmol·L^-1对损伤皮层神经元的保护率分别为 77.30%、80.10%、84.15%。结论: NMF 明 显促进胎鼠皮层神经元的洁性、提高正常皮层神经元,的存活卒,并能有效地保护KA所致的神经元损伤,提示 NMF 是一种很有潜力的治疗 AD 的药物。     

The First Phase of the SRIF Industrialized Base in ＂West Area＂ Has Been Put into Operation

After nearly two years＇ tense construction, the first phase of industrialized base of Shenyang Research Institute of Foundry （SRIF）, located at the Tiexi Casting and Forging Industrial Park in the west of Tiexi District, has now been completed and formally put into operation.     

THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH

Institute of Process Engineering, Chinese Academy of Sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially in the potassium hydroxide fusion, is important for the optimization of the operating parameters of the oxidative leaching process. A traditional thermodynamic method is proposed and the thermal decomposition and the reaction decomposition during the oxidative leaching of chromite with KOH and oxygen is discussed, which suggests that chromite is mainly destroyed by reactions with KOH and oxygen. Meanwhile, equilibrium of the main reactions of the above process was calculated at different temperatures and oxygen partial pressures. The stable zones of productions, namely, K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial to thermodynamic reactions. In addition, a comparison of the general alkali methods is carried out, and it is concluded that the KOH leaching process is thermodynamically superior to the conventional chromate production process.     

INFLUENCE OF HEAT TREATMENT ON DAMPING BEHAVIOUR OF THE MAGNESIUM WROUGHT ALLOY AZ61

The effect of isochronal heat treatments for 1h on variation of damping, hardness and microstructural change of the magnesium wrought alloy AZ61 was investigated. Damping and hardness behaviour could be attributed to the evolution of precipitation process. The influence of precipitation on damping behaviour was explained in the framework of the dislocation string model of Granato and Lücke.     

Theoretical Analysis for the Motion and Temperature of Melt Droplets in Spray Degassing Process

The motion of melt droplets in spray degassing process was analyzed theoretically. The height of the treatment tank in spray degassing process could be determined by the results of theoretical calculation of motion of melt droplets. To know whether the melt droplets would solidify during spraying process, the balance temperature of melt droplets was also theoretically analyzed. Then proof experiments for theoretical results about temperature of melt droplets were carried. In comparison, the experimental results were nearly similar to the calculation results.     

Growth Kinetics of Single Inclusion Particle in Molten Melts

On the basis of the single-particle framework, a new theory on inclusion growth in metallurgical melts is developed to study the kinetics of inclusion growth on account of reaction and collision. The studies show that the early growth of inclusion depends on reaction growth and Brawnian motion collision, and where the former is decisive, the late growth depends on turbulence collision and Stokes＇ collision, and where the former is dominant; collision growth is very quick during the smelting process, lessened in the refining process, but nearly negligible in the continuous casting process.     

Three-Dimensional Growth of Coherent Ferrite in Austenite: A Molecular Dynamics Study

Coherent second phase often exhibits anisotropic morphology with specifi c orientations with respect to both the second and the matrix phases. As a key feature of microstructure, the morphology of the coherent particles is essential for understanding the second-phase strengthening eff ect in various industrial alloys. This letter reports anisotropic growth of coherent ferrite from austenite matrix in pure iron based on molecular dynamics simulation. We found that the ferrite grain tends to grow into an elongated plate-like shape, independent of its initial confi guration. The fi nal shape of the ferrite is closely related to the misfi t between the two phases, with the longest direction and the broad facet of the plate being, respectively, consistent with the best matching direction and the best matching plane calculated via the Burgers vector content(BVC) method. The strain energy calculation in the framework of Eshelby's inclusion theory verifi es that the simulated orientation of the coherent ferrite is energetically favorable. It is anticipated that the BVC method will be applicable in analysis of anisotropic growth and morphology of coherent second phase in other phase transformation systems.     

An Easy Way to Quantify the Adhesion Energy of Nanostructured Cu/X(X=Cr,Ta,Mo,Nb,Zr) Multilayer Films Adherent to Polyimide Substrates

An approach based on film buckling under simple uniaxial tensile testing was utilized in this paper to quantitatively estimate the interfacial energy of the nanostructured multilayer films(NMFs) adherent to flexible substrates. The interfacial energies of polyimide-supported NMFs are determined to be *5.0 J/m2 for Cu/Cr, *4.1 J/m2 for Cu/Ta,*2.8 J/m2 for Cu/Mo, *1.1 J/m2 for Cu/Nb, and *1.2 J/m2 for Cu/Zr NMFs. Furthermore, a linear relationship between the adhesion energy and the interfacial shear strength is clearly demonstrated for the Cu-based NMFs, which is highly indicative of the applicability and reliability of the modified models.     

High-Speed Friction Stir Welding of SiC_p/Al–Mg–Si–Cu Composite

A 17 vol% SiCp/Al–Mg–Si–Cu composite plate with a thickness of 3 mm was successfully friction stir welded(FSWed) at a very high welding speed of 2000 mm/min for the first time. Microstructural observation indicated that the coarsening of the precipitates was greatly inhibited in the heat-affected zone of the FSW joint at high welding speed, due to the significantly reduced peak temperature and duration at high temperature. Therefore, prominent enhancement of the hardness was achieved at the lowest hardness zone of the FSW joint at this high welding speed, which was similar to that of the nugget zone. Furthermore, the ultimate tensile strength of the joint was as high as 369 MPa, which was much higher than that obtained at low welding speed of 100 mm/min(298 MPa). This study provides an effective method to weld aluminum matrix composite with superior quality and high welding efficiency.