TL-5化学镀Ni—P合金在Nd-Fe—B永磁体上的工艺研究

粘结型Nd—Fe—B永磁体具有组织疏松、孔隙率高、强度低、耐热性差等特点。试验了孔隙封闭、除毛刺、去边角滚光及活化除去基体氧化膜等前处理技术。研究化学镀Ni—P工艺，选择一次性化学镀Ni—P合金工艺，成功地解决了Nd—Fe-B永磁体的防腐技术问题。既简化了工艺流程，缩短了施镀时间，又降低了成本。本研究成果亦适合烧结型Nd—Fe—B永磁体的防腐。     

镀NI-P合金技术在我厂冷换设备管束中的应用

简要分析了石化装置冷换设备管束腐蚀原因、化学镀Ni—P合金工艺原理及其性能。阐述了镀Ni—P合金在实际生产中的应用效果和存在的主要问题及解决，提出了化学镀Ni—P合金技术是换热管束表面防腐的一种有效方法。     

N80钢化学镀Ni—Fe—P的抗CO2腐蚀性能研究

采用腐蚀失重法和电化学测试方法评价了裸样N80油套管钢及其化学镀Ni—Fe—P防腐层的抗CO2腐蚀性能。结果表明，在抗CO2腐蚀方面，Ni—Fe—P镀层的腐蚀趋势比裸样的腐蚀趋势小，腐蚀电流密度和腐蚀速率低，即化学镀Ni—Fe—P试样的抗CO2腐蚀性能优于裸样的抗CO2腐蚀性能。     

钕铁硼材料的防护镀层

本文介绍了利用化学镀、电镀组合工艺，对永磁体钕铁硼材料进行防腐保护，提供了一种活泼金属表面镀导牟制备方法，解决了该材料的防腐问题。     

Ni—P合金电镀及其析氢电催化性能研究

本文研究以钛和铁为基体的Ni—P合金电催化阴极的制备及合金镀层的工艺条件、电沉积机理、镀层的结构、性能的研究。得出电沉积Ni—P合金在沉积速度、镀液维护、镀层结合力强、耐腐蚀性强、耐磨性能等许多方面与化学镀Ni—P合金工艺相比具有明显的优越性。     

酸性化学镀Ni-W-P合金镀层工艺研究

酸性化学镀Ni—W—P合金的可能性判定，探索次亚磷酸钠在酸性介质中将WO4^2-还原成W的机理，寻找在施镀条件下使W-O键松驰、断裂的催化剂，实现化学镀Ni—W—P合金镀层的生产应用。     

化学沉积稀土钴基软磁薄膜

本刊2002年第1期“铈对化学镀Co—Ni—P合金工艺的影响”和2004年第1期“化学镀Co—B—Y合金层的电化学特性和组织结构的研究”两篇论文，均源于安徽省自然科学基金资助项目《高耐磨化学沉积稀土钴基，软磁薄膜的研究》，该课题已于2003年10月结题，并通过安徽省科技厅组织的专家验收，被评为A级(优秀)。     

化学镀Ni-P及其复合镀概述

一、前言电镀复合镀技术诞生于本世纪五十年代后半期,而化学复合镀技术直到六十年代末才于西欧被开发出来。七十年代,美国研究开发了化学复合镀在工业中的应用技术。与电镀复合镀相比,化学复合镀具有许多特性,但由于化学镀Ni—P镀液本身非常之不稳定,镀液易分解,故要想掌握化学镀Ni—P的特性,首先应知道化学镀Ni—P的原理。     

化学镀镍-磷合金层对航空煤油热安定性影响的研究

比较了化学镀Ni—P合金层、不锈钢和黄钢片在高温下对航空煤油热安定性的影响．结果表明，化学镀Ni－P合金层在航空煤油中具有较好的热安定性。     

稀土Ce^3＋对复合刷镀Ni—P合金结构的影响

论述了Ni—P—Ce复合刷镀工艺，研究了稀土Ce^3＋对Ni—P复合刷镀层结构及工艺的影响。结果表明：阴极过电位越大，临界晶核半径就越小，临界形核功（结晶阻力）也越小，形核率就越大，越容易形成晶核，长成晶态沉积层，形成的晶核数目愈多，沉积层就愈细致。稀土元素Ce^3＋加入，提高了电刷镀Ni—P—Ce合金镀液析出电位和阴极过电位，促进了Ni基合金的还原析出，提高了形核率，细化了沉积层，在较高的磷含量条件下，得到了微晶结构镀层。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Novel polyurethane coating technology through glycidyl carbamate chemistry

Glycidyl carbamate chemistry combines the excellent properties of polyurethanes with the crosslinking chemistry of epoxy resins. Glycidyl carbamate functional oligomers were synthesized by the reaction of polyfunctional isocyanate oligomers and glycidol. The oligomers were formulated into coatings with several amine functional crosslinkers at varying stoichiometric ratios and cured at different temperatures. Properties such as solvent resistance, hardness, and impact resistance were dependent on the composition and cure conditions. Most coatings had an excellent combination of properties. Studies were carried out to determine the kinetics of the curing reaction of the glycidyl carbamate functional oligomers with multifunctional and model amines. Detailed kinetic analysis of the curing reactions was also undertaken. The results indicated that the glycidyl carbamate functional group is more reactive than a glycidyl ether group. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, on October 27–29, 2004, in Chicago, IL.