Relationship of Endurance to Microstructure of IBAD MoS2 Coatings

The endurance of ion-beam-assist-deposited (IBAD) MoS₂ is correlated with coating structure and orientation. Structure and orientation are determined by X-ray diffraction, while endurance is measured with a ball-on-disk tribometer operating in dry air. The IBAD MoS₂ coatings contain both crystalline and non-crystalline components. Only two orientations of the crystalline component are observed: the (001) planes parallel (basal orientation) and perpendicular (edge orientation) to the surface. Endurance of the coating is not related to coating thickness or substrate chemistry, but is related to the relative amount of the two MoS₂ crystal orientations. Coating endurance decreases with increasing edge (100) intensity. Furthermore, MoS₂ coatings with poor crystallinity exhibit good endurance. These results are discussed in terms of a possible oxidative wear mechanism and stress-induced basal re-orientation of the non-crystalline IBAD MoS₂.     

MSF-电感耦合等离子体发射光谱法测定钼铁中磷的研究

在用电感耦合等离子体发射光谱法测定钢中磷时，已有的研究报告中大多采用P178．221nm作分析谱线。但因其发射强度低而使测定精密度和检出限不理想。本文在采用多重谱线拟合（MsF）法扣除光谱干扰的基础上进行屏蔽，测定了存在严重光谱干扰的P214．914nm、P213．617nm谱线，同时也测定了没有光谱干扰的P178．221nm、P177．434nm谱线，结果表明，P213nm谱线的测定精密度和检出限最好，比常用P178nm谱线的精密度高，RSD达到小，检出限也比常用P178nm谱线的低。     

乳状液膜法迁移及分离钼（Ⅵ）的研究

采用仲胺N7207为流动载体，兰113A为表面活性剂、煤油为膜溶剂、NaOH作内相试剂的乳状液膜体系迁移分离Mo（Ⅵ）。研究了其迁移机理，确定了适宜的制乳、迁移分离等有关条件。在所筛选的制乳及迁移分离条件下，迁移分离含Mo(Ⅵ）100mg/L的水样，迁移率达98．0％以上。     

[H3NNH3]2K2MnMo9O32·(NH3)·3H2O: synthesis and crystal structure determination of a novel heteropolyoxometallate related to the Waugh structure

A novel heteropolyoxometallate with the formula [H₃NNH₃]₂K₂MnMo₉O₃₂·(NH₃)·3H₂O has been prepared in water solution. The crystal structure of the title compound was determined by the single-crystal method. This new mixed metal anionic complex crystallizes in the rhombohedral space group R3 (No. 146) with a=b=15.873(5), c=12.344(6) Å, γ=120°. The disordered structure contains three molecules in the unit cell. Full-matrix least-squares refinements of the title complex yielded final reliability (R) factors of 0.0356 (Rw=0.0868) with a goodness-of-fit (GOF, Σ₂) value of 1.099 based on 1430 [I>2σ(I)] observed reflections. All Mo and Mn atoms are six-coordinated octahedrally to form a Mn-centered cage with a Mo₉O₃₂ group as the framework.     

入世后中国钼工业的机遇、挑战与对策

本文阐述了中国钼工业现状，中国钼工业在世界同行业中的地位、中国钼业入世承诺、中国加入WTO后钼行业面临的机遇与挑战、中国钼行业拟采取的原则性应对措施以及中国钼工业的发展前景。     

2001年钼市场回顾与展望

回顾了 2 0 0 1年世界钼市场的供需状况和价格走势 ,并对 2 0 0 2年钼市场前景进行了展望。     

High-rate dual-target DC magnetron sputter deposition of “blue” electrochromic Mo oxide films

Mo oxide films were prepared by dual-target reactive DC magnetron sputtering under conditions leading to films that were blue in as-deposited state. The deposition rate for this “blue” Mo oxide was as high as 1.5 nm/s, to be compared to 0.85 and 0.1 nm/s for highly transparent Mo oxide films made with dual-target and single-target sputtering, respectively. Good electrochromic properties of the “blue” films evolved after 5 colour/bleach cycles in a Li⁺ conducting electrolyte.     

In situ carburization of metallic molybdenum during catalytic reactions of carbon-containing gases

Supported molybdenum clusters were prepared by sublimation of Mo(CO)₆ onto dehy-droxylated alumina followed by decomposition in flowing dihydrogen at 970 K. These alumina-supported molybdenum clusters were found by XAFS to transform into Mo₂C if heated in a 20% methane/H₂ mixture at 950 K. For the hydrogenolysis ofn-butane at 510 K and CO-H₂ reactions at 570 K, both at atmospheric pressure, molybdenum and carburized molybdenum showed similar, but different for each reaction, turnover rates. The product distribution was the same for each reaction on Mo and Mo₂C. In both reactions, in situ XAFS data for fresh and used catalysts indicated that Mo clusters progressively transformed into Mo₂C under the reaction conditions     

钼粉生产过程质量控制

主要探讨了钼粉实际生产过程中，钼粉质量控制的问题，主要目标是依照国标建立和完善钼粉生产过程中的控制质量体系。     

对钼粉"小白点"问题的研究与实践

结合生产实践、分析研究了钼粉还原生产过程中所产生的“小白点”的成份、形成机理、产生原因、对后序加工的危害及其防治